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carb problems

6025 Views 13 Replies 7 Participants Last post by  chinmay
1997 suzuki rf 900 carb problems

ive got a 1997 suzuki rf900. when the bike ran it would idle low or it would idle high. when i got on the throttle it would bog down. This was about 6 months ago. when i decided that it would probably need some money to get running i drained the full tank and plug the lines going from the fuel tank to the motor, this was the beggining of its six months of none running storage. someone mentioned that the carbs may have needed to be synced, but that doesnt make any sense to me because there preset from the factory and unless you take the bike apart they should be fine. i tried to start it yesterday, i connected the lines and filled it with fresh gas and all it does is crank, its got compression, but it doesnt start. what should i do?
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I'd drain the carbs while on the bike (try to catch what comes out with a piece of hose and a container looking for rust, water, trash, etc). Once drained, put Seafoam in as mentioned above and let it sit at least over night. If its ridable after that, I'd put some Chevron "tectron" in the tank as well. It works very well at cleaning out the entire system...

If that doesn't work, remove the entire carb rack WITHOUT unbolting -(KEEP THE 4 CARBS TOGETHER AS A UNIT), it should come out all 4 carbs. Remove the float bowls and clean out the jets using carb cleaner and an air compressor. As long as you don't adjust the sync screws it shouldn't make the sync any worse/better. Once running correctly, you can do a sync. As stated above, the sync helps more with rough running/ vibrations.

I suspect the carbs will be very gummed up...
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