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Old 10-04-2011, 06:39 PM   #1 (permalink)
Denniss_66
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what should my compression be?

Hey every one i was just wondering what my compression should be on my 6.5 it has a very poor start and i was wanting the compression test it before i start throwing any money into it. it also idles rough as well.

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Old 10-04-2011, 07:12 PM   #2 (permalink)
Diaric
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around 400 on a warm engine is good. approaching 300's is worn out. IIRC, no cylinder should be out more than 10%

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well to make your pump retarded, you could let it hang out with me for a day
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