1980 kz250 LTD sitting at 90psi engine pressure. help!

  • Buschpush
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06 Jun 2024 17:34 #900390 by Buschpush
1980 kz250 LTD sitting at 90psi engine pressure. help! was created by Buschpush
So I just redid the left side, right side, top half entirely, cam gasket and many more where am I losing that much pressure?

KZ250 LTD 1980

I have the muffler off but carb on idk where I could be lossing this much pressure how do I check where I'm lossing it?

Here is a video 
youtube.com/shorts/5C0SOG86yo4?si=LXATcZdqL3ZNzk1o


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06 Jun 2024 18:11 #900391 by Nessism
Replied by Nessism on topic 1980 kz250 LTD sitting at 90psi engine pressure. help!
Engine warm, throttle full open, in order to do a proper compression test.  Also, the bike needs some miles on it.  Not a never run top end, although even that should make more than 90 psi.  

Did you verify valve clearances?
Ed
Carb O-ring Kits : www.kzrider.com/forum/3-carburetor/61807...-o-ring-kits?start=0

www.kzrider.com/forum/faq-wiki/618026-new-owner-things-to-know

1981 KZ750E2
www.kzrider.com/forum/11-projects/604901...z750e-project-thread

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  • Buschpush
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06 Jun 2024 18:54 - 06 Jun 2024 20:14 #900392 by Buschpush
Replied by Buschpush on topic 1980 kz250 LTD sitting at 90psi engine pressure. help!
Yeah valve clearance checked but didn't have throttle fully open!

Update; got it to 110 psi with throttle open!
Last edit: 06 Jun 2024 20:14 by Buschpush. Reason: Update

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