Question about 1981 Suzuki GS 750 L

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Carb? the bike sat a few years i drained the bottoms of the carbs and cleaned the drained the gas and put a battery in it and it started right up, but when i let the choke go it will die.

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You need to have the carburetors completely cleaned.

Posted on May 14, 2010

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1997 Honda CBR 1100 XX. Bike builds idle slowly when cold . right side exhaust is forceful and hot while left side exhaust in minimal and warm only. Changed plugs and made no difference. Seems to idle...


Clay, you have a tiger by the tail. There are a lot of little parts to the carb system. I will try to assist you in the basics without carb removal. This may require a few replies back and forth. Start by turning off the gas then drain the carbs. Now turn on the gas and check to see that fuel flows into each carb. If gas starts flowing out of all the float bowls, now that the gas is back on, then all carbs are getting gas. To drain the carbs just remove the drain screw on the bottom of each carb float bowl. Two carbs have the drain screw on the left, two have it on the right side. Reply with what you find. tombones49_51.gif

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Bike starts well, 2006 but only has 1000 miles on it. sat in storage during move (7 months). drained gas and disconnected battery. idles fine but when you give the the gas to go or give it gas period it...


If the bike ran fine prior to putting it in storage and all you did was drain the fuel and disconnect the battery, its likely moisture ( condensation) developed in the carbs while it sat. this type of thing happens when fuel is drained. Your best bet is to remove the carbs and clean the jets. Its my opinion and experience to put fresh fuel in a bike along with (stable) fuel treatment prior to storing them. With the stable added to the fuel, the fuel will hold good for about 1 year.. Replacing the battery and starting them and letting them warm up to operating temp monthly while in storage is always a good idea..
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Sounds like your carburetor floats are stuck to the bottom of the bowls. You can try to tap the carb bowl with a screwdriver and try to get them to pop loose, otherwise you will have to remove the float bowl (usually about 4 screws on the bottom of the carb). All you should have to do is pull it down about 1/4" or so until the floats pop loose and then put the bowl back on. This is pretty common on bikes that have sat for a few months, especially if you are good about draining the gas from the carbs when you're storring it.

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I would remove and clean the sparkplugs - sounds like one may be fouled.

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ALWAYS have a fire extinguisher on hand when working on carburetors.
Remove the water trap bowl at the bottom of the petcock, (gas valve). Is there any water or trash in the bowl? Drain a cup of gas from the tank. Is there any water or trash in the cup? Dump it, clean it and re-mount it, ( not all bikes have a water trap bowl ).

Drain the carburetor. There should be a screw on the lower side or bottom of the carb float bowl. Remove the screw then replace it after the fuel drains. Turn the gas back on and wait a minute for the carb to fill with gas. Install a new stock NGK spark plug and try to start the engine. If the bike doesn't start and run properly then shut off the gas and remove the carburetor from the engine.

Remove the float bowl and clean the entire carb with a spray carb cleaner from the auto parts store. Wear protective goggles to avoid getting spray in your eyes. Spray into all the little airways and fittings in the carb. Remove the idle screw and the air screw on the outside throat of the
carb and spray into the screw holes as well.
< < READ CLOSELY > >
Be sure to put these two screws back in the same hole they came out of. IMPORTANT > do not tighten these two adjusters down. Only screw these in until they LIGHTLY seat. Now turn each adjuster one and one half turns outward. Put the rest of the
carb back together, clean the air filter and install the carb. Let the float bowl fill then start the engine.

Please rate this solution. Thanks!

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Check compression ratio and valves clearance.The carbs leak any fuel from their o-rings.Spray through the air box with a carb cleaner spray while pressing start button but little bit at a time.Don't twist the throttle too much and always use choke until she fires up for good.

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Drain and replace the gas with fresh.
Remove the air cleaner and spray carb cleaner into the inlet. Work your throttle a little then put everything back together and try to start it.

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How to drain fuel from carb bowl?????


there should be a screw or a larg looking bolt on the bottom of the float bowl (carb) remove it and it will drain use a rag to catch it and drain your tank add fresh gas (if it dose'nt run right you may have to clean the carb)

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Getting a fuel dump


Sounds like you need to clean the carbs out, as they are probably gummed/varnished badly after sitting for 2 years.

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