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No Compression in cylinder 8 TWO engines

nmastrandrea

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I have a zero compression in cylinder number 8 in both of my Volvo Penta engines. I brought it in because it smelled like it was running rich and now seems to be much bigger problem. What would cause BOTH engines to have the same problem?
 
I have a zero compression in cylinder number 8 in both of my Volvo Penta engines. I brought it in because it smelled like it was running rich and now seems to be much bigger problem. What would cause BOTH engines to have the same problem?
A total and very unique simultaneous coincidence.

Are you absolutely sure of this?
Have you removed the valve covers yet to look at the rocker arms and/or push rods?



.
 
A total and very unique simultaneous coincidence.

Are you absolutely sure of this?
Have you removed the valve covers yet to look at the rocker arms and/or push rods?



.
All is know is that I brought it in for a heavy gas smell when cruising at low speeds. Figure it was a simple adjustment. This is what I am being told. Leak down test says it's not valves. Still no explanation why both engines.
 
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