Need help diagnosing whats wrong with my 2007 Volvo Penta 3.0 motor. Help!

[Will.Ritt]

Ok my problems started when I left the cap open on the water attachment . I believe it sucked in air causing my motor to overheat. The water pump impellar and thermostat were both destroyed. After replacing them both I realized I had alot or water in my oil. So my first thought is the head gasket went. I did a compresion test and it was 130psi,80psi,70psi,110psi. So I know the compression numbers arent good. But I dont even know the engine specs. I just dont want to pull the head if thats not what the problem is. Thanks

 

[Don S]

Re: Need help diagnosing whats wrong with my 2007 Volvo Penta 3.0 motor. Help!

How hot and for how long was it that hot. Anything under 100 is no good, but with a 2007 engine, you should be around 150.

How much water is in the oil? cup full, gallon? Is the oil level way over the full mark?

I would be doing a leak down test to find out where all the leaks are.

 

[Will.Ritt]

Re: Need help diagnosing whats wrong with my 2007 Volvo Penta 3.0 motor. Help!

Um as soon as the alarm went off I shut it off but I did try to restart it a couple of times to get it back to shore. As for the oil im not really sure how much is it but when I pulled the dipstick the oil is about 1/2'' over full and is milky in color. So a leak down test would tell me if the head gasket is bad?

 

[Don S]

Re: Need help diagnosing whats wrong with my 2007 Volvo Penta 3.0 motor. Help!

It could help you find the problem. You don't so much need the numbers, just check each cylinder at TDC on it's compression stroke, pressurize the cylinder and listen to hear where the air is coming out. Exhaust, intake, remove oil cap and listen in valve cover.