Volvo Penta starting problems

[pjeffries]

Re: Volvo Penta starting problems

Don,

Here are the pics of the riser and the manifold. Also took what is left of the riser gasket.

Back out to clean up gasket surfaces. So much easier in the daylight.

 

[captmello]

Re: Volvo Penta starting problems

did you ever do a compression test? Those exhaust parts look pretty good, IMO.

 

[Don S]

Re: Volvo Penta starting problems

Even without cleaning the old gaskets off, they don't look to be the problem.

What you need to do kind of a leakdown test on the cylinders with water in them. The trick is, you need to disconnect the hoses that go from the manifolds to the thermostat housing, at the thermostat housing. Then hook some clear hose to the thermostat housing and backfill the cooling system with water so the hoses are full. Then do the leakdown test on the cylinders while they are at TDC on the compresssion stroke. Now, pressurize the cylinder with air from your compressor. 50 to 100 psi should be fine. If there are bubbles in the hoses, then you have a leak from the cylinder to the cooling system. Possibly a head gasket, could be a cracked block or head.

 

[pjeffries]

Re: Volvo Penta starting problems

Don,

I appreciate your help through all of this but I think I have hit a wall. I follow what you are asking me to do, but I just don't have the experience to take of the manifolds and the heads. I have learned a lot from you and may need to get help again.

Time is also an issue. I have a lot of work lined up and need to concentrate on that.

Going to spend some time looking for a shop tomorrow. There is a dealer 80 miles from here.

Again, I truly appreciate your help. I will keep you posted how it turns out. Have a good summer!

 

[Don S]

Re: Volvo Penta starting problems

Not a problem, and I understand.
Will be waiting to hear the outcome and what the problem really is.

 

[pjeffries]

Re: Volvo Penta starting problems

Well, here we go. Blown head gasket on the one side. Seriously overheated at some point before I bought the boat. Had both heads checked and ground (or shaved) Also had new impeller put in and they installed the plugs, wires, cap and rotor that I already had purchased. It runs great. Had it out steady for three days.

Only problem, now I lost the VDO cluster gauges. Sent them to CDI to get them checked out. Have power and good ground to the 24 pin plug. The sending units I could find are connected. Waiting to hear from CDI.