A high idle may be due to a vacuum leak. BE SURE to put a trace of antiseize compound on the top screw threads AND the screw taper. Talked to the mechanic, not uncommon on the 400s or even some of the four-wheelers especially new, the vibration of the engine at idle will cause gas to go in to the overflow pipe in the carb bowl and drip a bit into the drain hose, he said as long as gas is not "flowing" out its fine. Rus23, if you meant the overflows and not the drain screw refer to this quote or what I have written and linked below. He was amazing to work with! Always answered emails within 2 hours and I received the parts on Monday. It's not always the case. If the carb is overflowing and leaking, there has to be a problem with the float level setting, or the needle valve not seating properly when the float is all the way up. It sounds like the needle and fuel float have issues. d) Drained carb again. carburetor idle mixture screw seat; carburetor idle mixture screws tool; carburetor johnson 70 idle problem; carburetor maxture valve factory setting for johnson v6 150 motor; carburetor mixture screw adjusts what; carburetor mixture screw at the bottom or in the middle; carburetor mixture screw+speed screw+adjustment; carburetor on a 2001. Re: Finding an air leak in the fuel system. In addition, fuel may flow into the engine unrestricted, which, if the engine is not running, can cause hydraulic lock – that is, as the piston rises on the compression stroke it cannot compress the fuel. If search results do not exist, please search by others keyword. Open the drain screw and see where the fuel level is. I cleaned out the carb and put it back together (first time ever) and it started and ran, but the throttle was not working so I took off the carb cap and aligned the throttle sleeve properly and put everything back together and it started once and stalled and now won't start but gas is leaking from the drain tube on the bottom of the bowl. last summer I worked on cleaning it up and went through the carbs and clean them out (more than once) and also synced the carbs. 6 litre petrol engine (1587 cc), 1. Tap to on and no leak. Place the carburetor assemblv on a work bench and drain the float bowls into a suitable container. Now I havent replaced my fuel pump in 20 years or so, it may not be pulling as good a suction as it should, but still the damn bowls shouldnt drain in 24-48 hours regardless of pump. Read some of the posts about fuel leaks on GBs. Float Bowl Drain Screw: AS568-009 (7/32″ ID x 11/32″ OD) It was supposed to be easy to maintain and not leak fuel, so that carbs were to sit horizontally. The rear float bowl has a leak just above the upper right rear corner where the, #49 Fuel Line Tube, ends, there is a, I will call it, a small flat freeze plug approx. I have noticed that my first tank in the front tank, of fuel and i am at 1/4 tank and have about 140 miles on trip meter. These adjustments will control idle speed, idle quality, and initial responsiveness/ acceleration of the engine. The fuel bowl is wet with fuel on the bottom, and it is not running down the sides of the bowl, but I am having trouble pinpointing what is leaking. 6L Duramax diesel in addition to draining the fuel water separator. Brand New ATC 185S Carb Leaking From Drain Tube Got a new carb for the 185S and no matter what I do it leaks gas out the bottom drain tube. Then re-tighten the drain screws. After 24 hours engine starts even in cold weather the engine starts with no priming. Low fuel pressure in a major cause of injector failure. After looking at it again today and thumbing through the manual, I found that the float bowl has a drain screw and hose. Many products with traditional or turbo hardware are built for vintage motorcycles and modern motor vehicles. The metal part of the drain plug that screws into the engine block keeps getting loose, I finally took the whole thing off since I did an oil change. leave for about an hour then fill the tank,don't wipe off any excess straight away. Typical carburetor overhaul: 1) Turn the tank petcock to off and drain the fuel from the lower bowl of the carburetor. You're done. Opened it up (it was kinda gross), cleaned it up, put it back together. New to trikes, why is my Honda 250SX leaking gas? I searched a bit trying to find someone with a similar problem, but didn't find the answer I was looking for. Leak Jet Effects on Air/Fuel - Blocked Jet, #50, and #80: Fuel Screw Effects in 1/2 Turn Steps: Linkage-closeup- as the screw is turned inwards, the rod touch-point is delayed: BKMod to Reduce the FCR-MX Accelerator Pump Stroke: Turn the Choke Knob on PJ and PWM carburetor to set the idle speed. The carb float rises with incomming tank fuel, when the bowl is filled the float arm nudges the needle into the seat shut-off valve and stops the fuel flow. Back screw off1/2turn. The fuel sediment bowl assembly on Ford N-Series tractors requires periodic maintenance like everything else and sometimes we encounter leaking issues that not only are major safety problems but can be frustrating and aggravating when discovered. Holley Carb #4160 need fix for leak rear float bowl PLEASE. It is the first thing to replace. Got it back together and running, also tried adding an aftermarket air fuel screw to make it easier to adjust. I came back home and it was leeking gas out of the hose that comes out of the bottom of the carburetor. One of the common problems with an oil fired furnace are the fuel pumps and their need for replacement. If the engine is shutdown turning off the fuel cock,none of this happens. Do not, however, drain the fuel tank because most tanks are not painted on the inside. That's when you know it's the petcock and not anything else associated with the fuel system. Carburetor leaking I drained the old gas out of the tank and tried to drain the bowls but no gas came out of the drain tubs when I turned the screws on the underside of the carbs. 2) did you tighten the drain screws on the bottom of the bowls fully? If not, fuel could be getting past them and out the drain hose. that would be either the float set to high or the needle and seat is missing an o-ring while you had it apart. Over time, the carburetor may develop cracks due to the vibration and heat of the engine. You're done. Is there a gasket to replace or does the whole fitting have to be replaced?. Check that the fuel-bowl drain screws are closed and that the vent and fuel feed hose is attached properly, clamp tightened. I came back home and it was leeking gas out of the hose that comes out of the bottom of the carburetor. 4 psi to remain for a period of at least 15 minutes and then raise the fuel pressure to 6. 75, the 1/8 throttle position (all 100% pilot flow) will be rich. 3 is a good engine, there may be some problem areas that will eventually need attention. Carb Float Needle. From1965-1979 Most will have 7/8 inch 20 fuel inlet till 1971 and 1 inch 20 after. First, check to see if the drain screw is tightened, Secondly, the float level could be off. The late model Beeches use a flush drain valve. I remember the. When i stoped fuel was leaking full stream out the over flow tube. Some good sources, which provide information on theory of operation, specifications, and how to do What is known about the specific carburetor being restored. On the very bottom of the carburetor bowl there will be a small brass cover screw, using a flat screw driver, open this screw and allow all gas to drain from the carburetor system. If the float in the carb does not seal, all of that fuel could end up in your engine. (c) Unscrew the suction chamber retaining screws (3). I've tried a new drain screw and that didn't work. Screw in the new main jet and replace the float bowl. As it leaks the carb float falls and the carb refills. If it is, then you might further have a float issue which doesn't shut off. Repeat steps 8 and 9. Rules, New Member Introductions, and Forum Information maybe your carb drain screw is upen its on the. Let the fuel run through a little. PILOT SCREW #10 is for adjusting the fuel flow when on pilot jet ( also know as slow running mixture screw ) its used to adjust your mixture when on idle or low revs , or before your on main jet the thing below is a blanking plug set from the factory. Reinstall the carburetor and check to see if your leak is gone. this enabled him to check float level on a carb while still mounted on the aircraft. Question from Mike (1956): At the front of the '56 Imperial gas tank (bottom side) is what appears to be some sort of a plug or drain. A bit of (probably) fuel came out, I put it back together, and after that it seemed fine. The carb on this 01 Honda Rancher is filthy and needs to be pulled and thoroughly cleaned. Typical carburetor overhaul: 1) Turn the tank petcock to off and drain the fuel from the lower bowl of the carburetor. What is this part called so I can look into replacing it. EXPLODED VIEW - MODEL 4150/4160. Honda designed all of the cleaning ports, drain screws, and adjustment screws to face the right side of the bike, which is the upper left in the exploded view. The gas cap on a Poulan chainsaw covers the tank and keeps gas from spilling while you cut. Next, close the screw and reinstall the fuel line. I can take the bowl off the carb and pour a small amount of gas into it and watch the gas come out of the drain tube. Take carburetor to a comfortable working area. One way to tell if there are any air leaks is to pressurize the fuel system. just make sure: - you protect the tyre from leaking fuel - you put your fag out first. checked oil line leaving off the carb over night and no oil is leaking so not going past. My carb on my atv is leaking gas out of the float bowl drain tube? I have an 07 Kawasak Bayou 250 and affter it's shut off affter running it will drain quite a bit of fuel out of the float bowl drain tube ( I have checked the float bowl drain screw and it is tight. Carburetor Top Screws, all about their screw heads & Screwdrivers (an educational treatise): Screws are M5 x 0. The other day i went to start it up and noticed that as soon I turn the key and gas on, Gas starts to pour out of the carb drain hose. for the air leak more fuel must be turned on. The fuel usually comes out dirctly from the high speed tube located in the carb venturi. Remove the screw then replace it after the fuel drains. Drain Hose Length (MM): 435 Fuel Pump Type: Inline Breather baffel fabricated part of cover. I tried for a while to get a hose into the tank itself but it kept getting stopped somewhere. This should fill the float bowls. FASS Diesel Fuel Systems offer a wide selection of replacement parts for purchase, allowing our customers that like to do it themselves access to all the same products originally available only to authorized dealers. long story short I got the bike running and driving again but if the bike idles it will drip gas, while in motion it will not (obviously because gas is being constantly pulled through. Also you will see many people had it repaired as I did by welding with fuel in the tank. If it's the "nipple" I think it is, it is possibly the float bowl drain valve that is leaking for some reason. DO NOT overtighten these top screws. Tru to hit the carb with a hamer or the head of a screw driver. The later 36hp fuel pumps are not designed to be lubricated by crankcase oil and will leak. do each step. I have a Rochester Quadrajet Marine Carburetor #17059286. if it is coming from a over flow tube check your float bowl. I said the air screw. Edelbrock is the most respected name in performance. Fuel Tank Accessories. Miscellaneous Carb Questions FAQ compiled & edited by Kristian #562 Please read the Disclaimer before attempting any work in this FAQ. Unscrew the main jet only, leaving the needle jet holder in place. Make sure to wipe up any excess grease. It is a small round piece of fuel resistant plastic or rubber about the shape of a pencil eraser, but a little smaller. check this video out at around 4:00 mins tells you how to fix over flow problem its a 2t carb but your ft carb float , floot needle work the same way make sure the spark plug is gap right and new,. Removing rust from a gas tank can be accomplished in a number of ways. This kit is a genuine OEM International brand part. Gas Leak on TTR-90 I filled up the tank for my nephew and I noticed gas was leaking out the drain tube. During the repair I noticed a very slight drip from the carburetor float bowl drain port. Rarely have I been able to save a GL1100 carburetor with a broken idle mixture screw tip stuck in the idle orifice. The needle attaches to a hinged float. My carb on my atv is leaking gas out of the float bowl drain tube? I have an 07 Kawasak Bayou 250 and affter it's shut off affter running it will drain quite a bit of fuel out of the float bowl drain tube ( I have checked the float bowl drain screw and it is tight. Remove the vacuum plug holes in each carb body and screw in the vacuum gauge adapters. I have fuel leaking from the fitting on the right fuel line in the pic. I believe it is leaking from the back of the carb. When I looked at my Carb i noticed the lower head was completely soaked in gas! It was leaking from that little silver nipple whenever I would shake the Quad. Now that I have put fuel into the system I have found a slight leak from the fuel pump - a Mk2 pre-89 unit with the pump, filter and accumulator in one unit. I'm a little confused also, if you are talking about the carb bowl drain screw, i can say I had one leak either, but maybe make a gasket/washer out of a milk jug, or just go and find a plastic washer that fits. I also smell fuel after topping off the tanks at the helm. You might want to drop a pilot jet size. If your gas valve tests good, or has now been repaired or replaced and tests good, we will move on to the carb float needle. He has the type of drain plug where you take the cap off and pull out this plastic piece, and then when you are done draining the oil you push the plastic piece back on and put the cap on. Drains may be hooked to wall suction, a portable suction device, or they may be left to drain naturally. Carpet to Wood Stairs Remodel - Saw off Old Stair Nosing after removing the carpet. My carb on my atv is leaking gas out of the float bowl drain tube? I have an 07 Kawasak Bayou 250 and affter it's shut off affter running it will drain quite a bit of fuel out of the float bowl drain tube ( I have checked the float bowl drain screw and it is tight. Carburetors can be cleaned with a verity of products and some elbow grease. Use eye protection and blow them out with air or carburetor cleaner. Why is a 2002 Honda foreman leaking gas out of the carburetor drain hole when drain screw is tight? If you have a dribble, this would be a vac leak allowing fuel to drain back to pump. Several times recently when I turn on the fuel cock there is a. You might be. If you do not have the time to rebuild your drain valve or if you are one of the unlucky few that has a damaged drain valve, this is your solution for a long lasting repair and not have to use the poor performing Buna-N o-rings that the factory valves force upon you. It sounds like the needle and fuel float have issues. Better yet; replace it. do each step. Fuel leaking everywhere is not good at all. Carb Float Needle. If you still have the original o-ring on the drain screw, it may be a source of leakage during this test. I removed it and the bottom of the filter has a screw-on fitting that holds the heating element in place. The parts manual shows the o ring for the drain bowl and the o ring that fits on the bottom of this (it Is designed to press. The screw next to the black pipe (the one that's leaking) is the drain screw. If he carb still has gas but the filter is empty, it's a pump problem. If your furnace is leaking fuel, this is a potentially immediate and high danger – especially if the fuel is propane or natural gas. There is an upgraded filter available as they don't make this one due to all the problems (duh) but I've heard sometimes near $500. Remove carburetor bowl (it may be easier to remove carb assembly from manifold to remove the bowl, but you will have reinstall the carb without the bowl). I checked that the drain screw was tightened all the way, and it was. The drain screw is in the bottom of the 20C plunger cap. If it was the drain screw, gas would leak whether it was running or not. Most likley worn needle seal or crap keeping the needle fro sealing, but a fuel leak in your garage or basement could go boom. Carburetor Problems and Solutions. Gas Leak on TTR-90 I filled up the tank for my nephew and I noticed gas was leaking out the drain tube. Naturally, this did not cure the problem either. no need to drain gas tank or disconnect the tank fuel line from the carb just lift tank up and sit it sideways on frame. It will leak whether it is running or sitting from the drain if the drain screw is not tight or the float bowl is cracked right there. Start the engine and check for fuel leaks, correct as required. Re: Why would a freshly overhauled carb be leaking? You need to check you oil VERY well. You're done. Leaking gas from overflow tube. A bad needle and seat would over fill the bowl, wich would run fuel out of the drain tube. It's not always the case. They will strip very easily. Turn the gas back on and wait a minute for the carb to fill with gas. The carburetor filter bowl is leaking gas at the bottom. With the fuel off, open that screw and let it all drain out. Why is a 2002 Honda foreman leaking gas out of the carburetor drain hole when drain screw is tight? If you have a dribble, this would be a vac leak allowing fuel to drain back to pump. Open the drain screw 1/4 turn and apply vacuum to the drain screw nipple using your Harbor Freight sucker #92474. I got the fuel leak fixed. for the air leak more fuel must be turned on. If the tanks got a shut-off,with it OFF,put some fuel in the tank,then turn it ON and see if fuel leaks again. You could open the drain screw on that carb. Take the carb off and pull the bowl off of the carb and remove the pin and clean it out. Fuel leaking everywhere is not good at all. To adjust the governor linkage, loosen governor lever screw. This should fill the float bowls. When fueling from possibly contaminated fuel sources McFarlane recommends the use of a fuel filter, such as Mr. The brand 'Mikuni' is cast into the body of the carburetor (#2, yellow). If your lower fuel lines are leaking it's time to change them anyways. I removed the drain screw, a bit dirty, so cleaned up , replaced and the same, removed again and cleaned it and 2nd time it screwed in a little further. I double checked that the petcock was in the Off position. There is a standing recall of certain Briggs fuel tanks which were produced in the early 90's that Briggs will replace for free at any authorized dealer. Arctic Cat 400 - recently fuel started pouring from the carburetor bowl drain. Float Bowl. If the fuel filter is restricted or the fuel line is cracked there will be poor fuel delivery. The pump valves have to be seeping to do that. The possibility of a leaking drain screw is a different matter entirely. source of air—the dreaded vacuum leak! cfm carburetor has an adjustment screw to hold. I'm going to check this week to be sure. Remove the vacuum plug holes in each carb body and screw in the vacuum gauge adapters. Plugged bowl vent or overflow. This will cause the new seat to screw into the carb body and feel tight, but not fully tighten the gasket between the seat and carb body, and fuel will leak around the new seat, bypassing the needle. While you have the float bowl off you can turn on the gas while holding the float up with your finger and see if it leaks. Tools you'll need. Look for leaks. Thanks again for the help, I'll double-check those items. John Deere Drain Plug found in: Drain Plug, Washer (Gasket), Radiator, Block & Hydraulic Drain Plug, Premium Carburetor Repair Kit, Washer / Gasket for 7/8" Oil Pan Drain Plug, Single Induction Early Carb Hardware. If its going to set more than 6 months, add Sta-Bil to the fuel in the tank. If the jet is adjustable, screw in the screw/needle valve until it stops and count the turns. P1 Volvo Sunroof Drain Fix Until the day the drains leak and flood the entire car. I also removed the drain screw to the #1 float bowl to drain the gas and cause the float to really move and hopefully fix my leak. Cummins PT Fuel Pump Diagnostic. this link Performance Mods Section. I've looked around online and found no replacement parts. The fuel source (gas or electric) should be turned off. Then re-tighten the drain screws. If you are installing fuel tanks or repowering a vessel, be sure to consult a professional or at minimum have your finished work inspected to be sure there are no siphoning and fuel leak hazards. I have the same problem with a leaking plastic fuel tank. If the leak is occuring where the overflow attaches to the tub you may be able to seal it. Get shopping advice from experts, friends and the community! snowblower with engine part # 143019003. If your lower fuel lines are leaking it's time to change them anyways. Cold weather causes them to leak. It's a mess really. Then after cleaning it up, noticed water back again seeping under the plywood wall between the berth and the fuel tank side to the left of the rudder. reduced to 29 from 38. Float valve could be stuck open (sharp rap on carb sometimes cures that problem. However the carbs are pissing fuel out of the drain screw it looks like and from the butterfly valve. Nothing came out when I removed that drain bolt, so I figured I'd remove the bowl and take a look. You're done. Marpac 7-0351 Cockpit Deck Drain Scupper Valve Od 2-78 Inch Boat Marine 2 Pack. wait until the outside of the soap dissolves into a mush. I also removed the drain screw to the #1 float bowl to drain the gas and cause the float to really move and hopefully fix my leak. Unscrew the main jet only, leaving the needle jet holder in place. If fuel is leaking from the overflow & out the carb mouth, that is because of a stuck float, debris holding open the float needle, or a bad fuel valve. The pump valves have to be seeping to do that. _____ Thanks, Jan K. The float valve in the carburetor is sticking open. tailpiece leaking either where it screws into the rad. My #2 was a little loose and leaked - not. Re: Generac 7550exl carburetor help please! I give you a bunch of credit for taking this on and solving your problem without having to pay someone. The symptom was that coolant would start leaking AFTER I parked the car. When I got it home, I jump started the engine and noticed a fuel leak around the carb. Carburetors parts are made with softer metals like brass and aluminum , be gentle with it. Shut the engine off, replace the side covers and you are ready to go. The gasoline still in the float bowls will drain out the vents. Drainzit hoses are custom-designed to be easy to use and install. If the jet is adjustable, screw in the screw/needle valve until it stops and count the turns. CARBURETOR BODY Loosen the drain screw and drain the fuel from the float chamber into an approved gasoline container. Or use old impeller and replace with new impeller in spring. If it's the "nipple" I think it is, it is possibly the float bowl drain valve that is leaking for some reason. This project is easy to complete and you only need a few. a pilot adjuster screw. I cleaned the fuel tank, the hoses, etc, cleaned the needlevalve on the float, reinstalled carburetor, and the carb still leaks. for about a week to make sure it's not leaking fuel. Possible locations for leaks include the fuel tank itself, located over the rear axle. Open the service cover, bottom of the carb, you will see the screw for the bowl drain. Remove the fuel line at the pump and blow the line clean with compressed air. Allen head screws to replace those ridiculous Phillips head screws that come stock on the carbs: Qty 8 3mm x. you being in arizona, i would bank on a bad rubber seal around the fuel pump. Tilted push mower Carb Up, leaking fuel from muffler and carb now. Technical help on Citroen Xsara Picasso 1. M18 FUEL™ High Torque ½” Impact Wrench with Pin Detent - 2766-20 M18 FUEL™ Drain Snake w/ CABLE DRIVE™ - 2772A-20 M18™ RADIUS™ Site Light/Charger w/ ONE-KEY™ - 2150-20 PACKOUT™ Rolling Tool Box - 48-22-8426 View More New Products. No fuel should be running or dripping out with the float level with the carb body, as shown below. After looking at it again today and thumbing through the manual, I found that the float bowl has a drain screw and hose. If the main b ody of the carburetor is leaking, you will most likely need to replace the carburetor. Bell 412 fuel leak in Cargolux 747-8F A story from our brethren over in Freight Dogs regarding a Cargolux 747-8F freighter which was stuck in Prestwick for 12 days following the reported leak of "several hundred liters" of Jet-A from a Bristow Bell 412EP. Easily find the parts you need using our free online parts catalogs. Install the fuel drain manifold (banjo) fitting to the pump using the new bolt and sealing washers provided with the replacement pump and torque bolt to 24 ft- lbs (32 N*M). ) Piece of dirt in the works, hardened/eroded valve tip possible; less likely, punctured float. If the tank is leaking on the bottom you can even rub soap on the leaks and they will seal up. I put it back in and still am having the issue. This will cause the new seat to screw into the carb body and feel tight, but not fully tighten the gasket between the seat and carb body, and fuel will leak around the new seat, bypassing the needle. Do as Rocky suggests and remove the bowl and check the drain screw for debris or damage. The pump valves have to be seeping to do that. My carb on my atv is leaking gas out of the float bowl drain tube? I have an 07 Kawasak Bayou 250 and affter it's shut off affter running it will drain quite a bit of fuel out of the float bowl drain tube ( I have checked the float bowl drain screw and it is tight. Some carbs rely on the tight clearance between the throttle shaft and carb body to minimize air leaks. With the fuel flowing into the carburetor, the fuel level in the tube will be the same as that of the float bowl. I took the Carb out and checked float height. The only feature here is a pressed in plastic external atmospheric vent. Pulled carb now leaking fuel that's the float bowl drain. it looks tight because it is at the bottom of the bowl. Other wise bike is in near mint condition. Holley Carburetor Disassembly Guide: Rebuild Step-by-Step July 16, 2017 by Muscle Car DiY If you plan to disassemble a carburetor, it should be done with the carburetor removed from the intake manifold and placed on a clean workbench. I'm a little confused also, if you are talking about the carb bowl drain screw, i can say I had one leak either, but maybe make a gasket/washer out of a milk jug, or just go and find a plastic washer that fits. If you notice a gas fume smell around your fuel station, it might be time to replace the fuel handle. Been a while. The "drain" doubles as an overflow. If the float in the carb does not seal, all of that fuel could end up in your engine. the bottom screw on part of my fuel filter (its called the fuel bowl or water seperator-?) is leaking fuel day and night. Close the drain screw when the carb is empty. The needle attaches to a hinged float. I have an issue with static setting of the tab on the float tang. Tecumseh Carburetor Bowls. Would first shut off petcock and drain float bowl, in hopes of flushing out contaminating trash. At this point there should just be the main threaded rod and three (maybe four) bolts supporting the tank to the body, and of course the bloody filler neck. Also the o-ring on filter housing cap can leak. no adjustment to the fuel screw or needle to be back to perfect that will take away from your riding time. The drain screw is in the bottom of the 20C plunger cap. It sounds like the TPS may be reading high causing the system to not recognize your idle. I have a brand new taotoe 50 scooter & it won't start. With a smaller diameter tip, the Q fuel screw will have to be screwed in further than the stock fuel screw to get the same flow. Drain the fuel filter first to avoid spilling a lot of fuel into the valley, remove the four screws, replace the o-rings and install. It will allow the gas to leak down into. Fuel Leaking Out of Tecumseh HM80 with 632334A carb Original Message Jan 23, 2008 11:02 pm I noticed fuel leaking out of carberator intake when engine is stopped on my snow thrower. Well worth the money. While the 7. i tried tightening the drain screw but had no luck stopping the leak. How to replace the fuel filter and drain the fuel water separator on a 6. that's why some guys report fuel in the airbox. If your trimmer is leaking gas, follow our symptom guide to help you identify what your problem is and the right part to replace. In certain situations their use is unavoidable. no adjustment to the fuel screw or needle to be back to perfect that will take away from your riding time. Carburetors parts are made with softer metals like brass and aluminum , be gentle with it. Other wise bike is in near mint condition. Now let’s move on to the most common cause of fuel leaks, and it’s due to this little part right here, the float needle. Carb Float Needle. ” but I am unable to copy and paste it to this message. Trimmer: Leaks Gas. I tried to tighten up the screw near the drain hose and it still leaks gas and now wont start. What method did you use to clean the carb? When you poured fuel into the bowl, was it off on the bench? Where did it leak? Yes, the plunger is its own seal, and if damaged, could leak. There is fuel in the oil so I will drain that all out tomorrow and put new oil in. Use a clean shop rag to absorb the fuel as it drains from each carburetor bowl. Please help - leak on towel rail! tightnlng up will help you need to drain and remake the leaking joint. Should have a clear hose running outside the bottom of the chassis. Usually, these leaks occur when the valve is in a ‘mid-open’ position, so the leak will stop when the valve is either fully opened or closed. I think I figured out what's causing my gas leak. 5 In Stock - Ships Immediately. Figured it was the wrong screw so I pulled it out, replaced the washer and oring on the factory screw. LIMIT ONE FREE SET PER KIT. I'm a little confused also, if you are talking about the carb bowl drain screw, i can say I had one leak either, but maybe make a gasket/washer out of a milk jug, or just go and find a plastic washer that fits. Its good to know if one us way out of whack. The carb float rises with incomming tank fuel, when the bowl is filled the float arm nudges the needle into the seat shut-off valve and stops the fuel flow. Putting the hose back on would create a puddle below the bike in front of the back tire. Inlet Valve Seat - There is a slight possibility that this could be a cause of the carburetor leaking. After refueling, tighten the filler cap securely. Check yours now. The CT70 carburetor is a little bit smaller and the altitude compensator space is blank. POOR PERFORMANCE ON ROAD: 1. Remove the fuel supply hose and the fuel inlet fitting from the gear pump. Be sure the grey hose is not a fuel drain for stale fuel or water in the fuel.