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Old 09-04-2017, 08:26 AM   #1
SEGACDX
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Question GZ 250 2008 spewing oil and smoke.

I bought a GZ 250 as a project for cheap used came with lots of extra parts, everything inside seems in good shape.

I recently re-did the top end with new gaskets and rtv thinking the problem was with bad leaking gaskets, it always smoked before I bought it hence why I got it for cheap. The amount of smoke is large and oil comes out the pipe black, the smoke is white, I've adjusted the tappets to .005-in they where all over the place before, I just wanted to redo them quick, I'll check my service manual and do them again very soon to the right clearances.

I am not sure what to try next, some say piston rings could be the problem but I'd like to hear what you all think could be the problem.



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Last edited by SEGACDX; 09-04-2017 at 08:39 AM.
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Old 09-04-2017, 06:53 PM   #2
derbydave
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You need to do a compression test on the engine. Otherwise you are shooting in the dark.
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Old 09-04-2017, 11:16 PM   #3
SEGACDX
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Quote:
Originally Posted by derbydave View Post
You need to do a compression test on the engine. Otherwise you are shooting in the dark.
I would love to but I don't have the tool, I can go get one. What exactly would I be looking for in terms of psi.

I'm going to check the valve seals after if I do a compression test.



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Old 09-11-2017, 11:44 AM   #4
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Normal Compression is 142 to 199 PSI. The lower limit is 114 PSI
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Old 09-26-2017, 01:00 PM   #5
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I would change the valve stem seals. Not really hard to do just don't drop a valve. Make sure you are on tdc.



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