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what would cause low compression? 15f -190psi what would cause low compression? 15f -190psi

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Old 03-11-2010, 09:38 PM   #1
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what would cause low compression? 15f -190psi
2007 15f with 12 hours... all four cylinders dead even at 190 psi.. that seems low for 11 hours..? what would cause low EVEN compression at such low hours?

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Old 03-11-2010, 09:40 PM   #2
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Re: what would cause low compression? 15f -190psi
What should the compression be? There's NO way that all four cylinders could all be spot on equally low...
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Old 03-11-2010, 09:41 PM   #3
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Re: what would cause low compression? 15f -190psi
manual says 170 to 260 psi... being it has only 11 hours i would imagine that it should be near 260 not 190.... 190 is getting close to low...
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Old 03-12-2010, 08:27 AM   #4
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Re: what would cause low compression? 15f -190psi
its in the range, its good.. battery condition will affect comp, cheap guage
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Old 03-12-2010, 12:07 PM   #5
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Re: what would cause low compression? 15f -190psi
Yeah depending on the quality of your gauge, I wouldn't necessarily trust it to give you an accurate absolute value on your compression.
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