My sons 600 VLX has been running lousy since he bought it. I have narrowed it down to the carb & put mine on his, now his bike runs perfectly. what can be wrong with the carb, i have cleaned & re jetted but it still runs lousy. what else can be wrong??

As far as I know the fuel is vacuum fed to the carbs, did you take the fuel tank off & forget to connect all the pipes going to it? One is the vacuum pipe for the carbs.

How did you check the petcock? sure its not that.Yeah swap coil packs then ask again.

check your fuel pump & filter.

Hello,

Yes, your carbs will have to be tuned to your exhaust - this, usually, means upgrading the needles/seats in your carbs. I bought a Cobra exhaust system for my Suzuki (earlier model) and it came with the upgrade kit for my carbs.

Some people are happy adjusting the jets out further and living with poor fuel mileage, fouling plugs and lousy performance.

Do some research by calling your parts dealer and ask them if they have the carb kit for the exhaust you are wanting to buy. I use one of two online dealers; Bike Bandit or Old Bike Barn

Hope this helps. If you find this information useful, please vote on this post. Thank you.

Regards,

Oz

Take a piece of wire or a screw driver and short the terminals on the solenoid. If the starter works you have a bad solenoid. If you hold the starter button and tap the starter with a plastic hammer and the starter works, you need new starter brush's.If you take the starter apart and do not have continuity between every other armature contact, just buy a new starter and put it in.

hi,if the bike is a carb model,you may have a leeking float needle seal,this is quite common,basically if the float needles leak they will allow fuel to flow unchecked into the carb,ultimately flooding the carb,the fuel then runs down the inlet manifold and into the sump,hope this helps...cheers

keep eye on filter you may still have some rust in system

ok buddy on carb is a mixture screw turn this in 1/4 of a turn this is reducing the amount off fuel going to the cylinder if it pops this is too much fuel going in do screw it in until it runs smooth

Check fuel pump. You might have a bad diaphragm.

I have a 1990 GSXR1100. If it's the same as mine, which it probably is, then as u r looking at it REServe should b to the left. RUN str8 down and PRIme on the right. The petcock has small writing on it to indicate this.