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Cylinder 4 reading low

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Old Mar 5, 2012 | 06:52 PM
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MaDD-Myke's Avatar
MaDD-Myke
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From: KILLEEN,TX
Cylinder 4 reading low
MY EVO 8 IS NOT A 100% WHERE IT SHUD BE RIGHT NOW,CYCLINDER 4 IS READING A LOW 85 WHILE THE OTHER 3 IS AT 160..WHATS A SIMPLE FIX FOR THIS AND HOW MUCH WUD IT BE?
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Old Mar 5, 2012 | 07:49 PM
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Any other information? Was the engine warm? Did you put a few drops of oil in the cylinder?
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Old Mar 6, 2012 | 04:14 AM
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From: cow tippin
Do a leakdown test that will point you in the right direction. depending where compression is leaking it could be an issue in the head or bottom end.
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Old Mar 6, 2012 | 07:42 PM
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yes...thats not a bad idea...i will have to check that out
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Old Mar 7, 2012 | 05:50 AM
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But agreed on the leak down test. I have a similar problem b ut mine is cyl 2 and 3

GL
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Old Mar 7, 2012 | 06:44 AM
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You most likely have a ring problem in one cylinder.
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Old Mar 7, 2012 | 06:52 AM
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Originally Posted by barneyb
You most likely have a ring problem in one cylinder.
Yep, I agree...you will have to get it honed and do oversize rings below you lose complete compression...stay out of boost
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