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Forum: Engines

12-14-2014, 10:52 PM

Replies: 10

5.7 compression test- one cylinder at 150 psi, worry?

Views: 25,224

Posted By canada randy

Hours are unknown. No hour meter if you can...

Hours are unknown. No hour meter if you can believe that. I thought all boats had em. The leakdown test indicated any leakage was at the rings. She doesn't smoke. Runs very good actually. Just not as...

Forum: Engines

12-13-2014, 04:16 AM

Replies: 10

5.7 compression test- one cylinder at 150 psi, worry?

Views: 25,224

Posted By canada randy

I wish I had 150 psi. My 1995 7.4 L has around...

I wish I had 150 psi. My 1995 7.4 L has around 105 psi each. I then did a leak down test and they came in at around 8 % . I was ready to pull it out and rebuild it. Then I found a Mercruiser Service...

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