Question about 1998 Honda VT 750 C2 Shadow

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I have a fuel leak on the left carby the bike has been siting for a while drain fuel and put new fuel do they have nedle and seat

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Check the float and float valve in the left carb.
If it was left sitting on the side stand, that float bowl would have been pretty full, and is likely stuck open.
You can try spraying some carb cleaner through it, but chances are you'll at least have to remove the float bowl and clean the parts really well.

Posted on Mar 19, 2011

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I can get the engine started with the aid of the choke but cannot get the engine to rev at all. the engine just stops at anything near 2000 rpm. have had both carb stripped down and cleaned as the bike has...


Hi Roy ,

Your bike has been sitting in storage and the fuel is too old ad is stale by now .
Re open the carby , clean it properly with new fuel , all the jets need to be inspected for dirt or residue left by the old fuel , drain all the fuel out of the tank and replace it by new fuel .
The old fuel leaves a deposit film which needs to be clean so the best way is to pour a little fuel into your tank , shake the tank to clean it and drain it again .
Make sure that all gasket in the carby are clean or new as extra air intake will make the bike run rough .
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The carby's should be drained and flushed with an aerosol carburetor cleaner, available all auto/bike shops. The fuel tank should receive the same treatment, but a couple of cupfulls of fuel swished around and drained should be ok. Give the plugs a clean and thoroughly check all wiring connections for signs of corrosion. Take one plug lead off and turn motor over with a spare plug attached and check each cylinder for spark. Check all rubber components for persihing or cracking. Goodluck and cheers.

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Fuel is leaking from the carb into the cylinder and airbox when bike left overnight. Changed the jets but problem still there


You should adopt the habit of turning the fuel tap off when not riding, this will isolate the gravity pressure from the fuel in the tank.

The jets control fuel flow when engine is running,

I would think your float needle and seat is worn in one or more carby's. try a spray through of carby cleaner by turning fuel tap off and taking fuel drain screws out of all 4 carby's, disconnect fuel hose from fuel tap, allowing fuel to drain from lines and carby's. Spray carby cleaner into fuel hose and allow to flow out through all four carby's, allow to drain fully and dry out. Replace drains and fuel line and let fuel flow to carby's and see if a spray clean has done the job.

If not, inspect each floatbowl needle and seat. The link below gives exploded views of the bike in sections, with part names to help you get to them. Cheers.

http://www.cmsnl.com/suzuki-gsf600-s-bandit-2000-2003-usa_model16067/partslist/

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It is highly likely you have a sticking/dirty needle and seat in(one or both) fo the carburettor/s.
I quick trick is to loosen the carby drain screws( located at the bottom of each carby) and as the fuel drains out, tap the bowls with the handle of a screwdriver. This is often enough to loosen the blockage and your leak will stop.

Otherwise, if the leak continues, you will need to remove the carbys, and clean them taking particular attention to the needles and seats and replace if necessary.
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sounds like your float in the carb is stuck or the needle valve is bad. remove the bowl and push the float up to level. this should stop the fuel flow. be aware that only slight pressure should be needed.if it does not ck the needle valve. also mak sure you float is not damaged.

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1 Answer

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It sounds like your bike has been sitting a while? The jets tend to clog up rather fast these days with our "new better" fuel. Especially if its been left out in the sun. The choke is actually an enrichment circuit on these carbs and essentially it bypasses the carbs. So if your having a problem with your carbs putting the choke on basically bypasses the problem but normally it doesn't help once you give it throttle... although sometimes it does because its adding that little bit of extra fuel the bike needs to run correctly, but either way you've got an issue with your carbs and they more than likely need to be taken apart and properly cleaned.

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