Question about Yamaha YZF 600 R thunder cat Motorcycles

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My 1994 yamaha yzf 600g only starts with starting fluid.after, it'll rev to 7000 but no higher. if i let the revs below 3000 it dies. carb cleaning?

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Before you clean the carb, look closely to make sure there are no air leaks which could short-circuit the flow of air past the jets. Loose bolts or nuts holding on the carb could be one source of severe air leaks. While cleaning the carb, examine the float adjustment carefully to make sure enough fuel is being held in the bowl. You should be able to tell this when you first take off the bowl from the carb.

Posted on Sep 12, 2009

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It sounds very much like your main jets are blocked. Did you soak them in carb cleaner overnight and run them through with some very fine wire? That will usually sort matters. The only other thing that would cause this is if your Cdi or coils were starting to die, but since it ran better before you cleaned the carbs I'd guess jets are your problem..

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Hi, Kevin and the usual suspects are:
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Aprili RS125 2003. It starts, gets to 7000 revs then reduces. As I rev it stays at 2 - 3000 revs. If I put it in gear it wont drive but with the clutch held I can keep it at 2 - 3000, if I try to take off...


Hi, Stphn_dcksn if your bike has been idle for months or years and does not want to start you will have to deal with a few remedies:
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My 96 1300 royal star runs good at idel and half therodel but dies down at full throdle


I thought i had a problem with my carbs. it started cuttingout when i romped on the throutle, but when i took it to a cycle specialist, they said the royal star had a Rev Limiter in it. it intentialy starts cutting out and back firing when I try to rev it too high. I\´m looking at getting the DYNA 3000 to customize the limiter. $270 bucks
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