Kawi2strokes.com Forum

I have a 73' h1d and it starts easily and idles and revs great. The problem is it seems to not get enough gas because it revs up to about 4 grand and then has a moan to it after 4 grand and no power after that. There is plenty of smoke at wide open throttle which I guess is the injector is pumping what it should but I'm thinking it's not getting enough fuel. Ive had the carbs off twice and cleaned them really good with carb cleaner and compressed air. I took a compression check and all cyls were at 152 lbs. Any thoughts would be cool. Thanks!

Did you try bigger main jets?

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Twist the throttle, tilt the horizon, and have a great time. What triples are all about...........

No, these are what came with the bike. I have no knowledge of jet sizing for these bikes. Is it possible to actually have undersized jets? I figured the least I would have is stock ones. I do however have expansion chambers if that means anything.

You have to jet for any motor modifications. Especially expansion chambers. So yes, undersized jets can melt a motor.

Memorize this page http://kawtriple.com/mraxl/carb/carbadj.htm

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Twist the throttle, tilt the horizon, and have a great time. What triples are all about...........

Other things to check and in this order (IMO)
* Clogged air filter
* Clogged stock exausts (remove and clean; I use kerosene or mineral spirits)
* Ignition timing

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There are only two types of motor sport racing:
Nitro and everything else
(Sometimes referred to as fast and slow)

I want to add that it could be a goobered up petcock that just won't flow enough fuel.

You should check everything to avoid burning up a piston.

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Rotortech
Indianapolis
1974 S3