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post #1 of (permalink) Old 10-27-2002, 01:36 PM
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stock compression

anyone know the stcok compresstion on a sammi..i check it last week and its 100..is this good iam wanting to rebuild the 1.3 anyway
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post #2 of (permalink) Old 10-27-2002, 02:48 PM
 
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Re: stock compression

That is really bad! Is it even running? How much power does it have? Did you warm it up before you checked it? When you checked it did you hold the throttle to the floor? The stock compression is 199psi and the minimum is 170psi. Mine is at 150psi and it was running okay but for some reason it's running like crap now.
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post #3 of (permalink) Old 10-27-2002, 03:27 PM
 
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Re: stock compression

What 4x4_Austin_Mini said. Proper procedure for compression testing is all plugs out, throttle at wide open
so there is no impediment to spinning the motor. check you valve lash, it could be too tight.

If that doesn't improve things squirt a few pumps of motor oil in each cyl and see if it comes up.
If it does, its loseing it at the rings. If it doesnt then its at the valves.
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post #4 of (permalink) Old 10-27-2002, 03:48 PM
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Re: stock compression

oh...i didnt no it had to be wide open it was running tho maybe thats why its so low...but ya its running ok not bad but ok.i wont pass emessions tho dont no why. but iam sure a rebuild, header wont be bad..
post #5 of (permalink) Old 10-27-2002, 05:03 PM
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Re: stock compression

First, allow your Zuk to idle until it's at normal operating temp. Prop the throttle wide open, disconnect your ignition system and remove the plugs (all). Then connect comp. guage to one cyl and test with starter. Repeat with the other 3 cyl. I would guess that your readings will be more desireable!!
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