Yep.I'm joining in quite late, but was this motor properly winterized? if not, there could be a freeze crack somewhere?
I've tasted the green and it doesn't taste like glycol. The water is very rusty which makes me think it's raw water.Taste the green.
I had a seasoned marine mechanic come over tonight and he is almost positive my water intrusion is raw water and therefore something to do with the new manifolds/risers. He says you can pressure test them with your garden hose, run water through them but unless they're warm and running leaks won't necessarily show up. I hope he's right.
That's too funny. I already know mine wouldn't be impressed. I think I'll buy new ones before I do that, probably cheaper lol.Could you heat the manifold in the oven to a warm temperature than flow the water ?
If your wife/significant other is around I don’t recommend this. Lol
I put a turbocharger I refurbished through the dishwasher to degrease. My wife was not impressed
I did that test where I used a blocking gasket and garden hose and all held, no leaks.Build yourself a block off plate for the water jackets and then pressure it with a garden hose, or air pressure check it in a bucket of water.
And see if you can borrow a bore scope to see what the cylinder walls look like, look for moon shaped corroded spots on the low side from water sitting or general pitting.
I sent my manifolds and risers back to the manifold warehouse for testing (they covered half the shipping cost and would have covered the whole cost if they were faulty) and both manifolds and risers were all good. So they are now being sent back to me and i will reinstall.
The manifold warehouse have an excellent water in the oil trouble shooting guide on their site. Here is the link as it may be of some interest to forum members. It's from mercruiser but applies to other as well.
http://www.manifoldwarehouse.com/mes/news/Mercruiser_SB_Water_Ingestion.pdf
I also pressure tested my cooling system with a neighbors tester just to make sure that the marine shop wasn't blowing smoke up my butt. It held 14lbs with out losing any pressure.
Once the manifolds come back I will then be able to start doing some other tests, such as a leakdown test, even though I don't think I have any issue with the closed cooling system.
One of the sections in the above mercruiser link mentioned about making sure that all of the cylinders are firing, which seems obvious. Here is what it says, "If an engine has a spark plug that is not firing, that cylinder will act like an air compressor and it can draw water backward into the exhaust manifold." I noticed at some point that one of my spark plug wires (cyclinder 5, stern port side) had come loose for some reason, not sure when, but it is something to consider once I get things back together again.
If that turns out to be the problem I will gladly grant you your 1/2 hour back, maybe even drinks on the house lol. I am somewhat doubtful however.after reading this thread, very tiring work..... it could be a loose spark lead? i want my 1/2hr back...
after reading this thread, very tiring work..... it could be a loose spark lead? i want my 1/2hr back...
If that turns out to be the problem I will gladly grant you your 1/2 hour back, maybe even drinks on the house lol. I am somewhat doubtful however.
Thanks for asking Mudshark. I'm still battling it. Just took it out for a run on Saturday and ran into a carb issue. Took the carb apart and cleaned it all out, it had water in it and was dirty in the float bowls. I'm hoping I've solved my water in oil issue but still not certain until I can really run well. I am thinking that the bolts that came with the new risers and manifold were too long. I measured them to see how far they went into the manifold and it sure seems they would bottom out in the manifold at about the same time they become tight. So I think when I torqued them it would tell me 35lbs but I don't think it was 35lbs on the gasket. I bought some shorter bolts and installed them and I haven't turned the oil milky yet. Still think there's residual moisture in the system as my valve covers have a light coating of white on the inside. We will see how it works out.So how did it turn out ?