UPDATE: Water In Oil
So I pulled the first head and my head gasket is not compromised at all. There is also no steam cleaning on the cylinder head. Now I have not gotten to the other side yet, but I am leaning towards the loose intake. Also, since I tightened the intake before the tear down...
Thank you for the reply. Would you typically replace both head gaskets at this point if I have one gasket that is split? Would you do any additional maintenance with the heads off?
Thanks
Hello, I want to give an update on my water in oil on my 1998 mercruiser 5.7, GM Vortec V-8 EFI. I originally thought it was riser or risers gaskets causing the problem.
I replaced the riser gaskets, still had the problems. Replaced the risers, exhaust manifolds(26 years old), still had the...
I put oil in the fuel filter that was used during the season. Once the engine dies from the 2cycle, I remove the old and put the new one on, making ready for the next season.
Hello, I have twin 1998 5.7 260 EFIs 0L067794/0L067XXX in my Formula with raw water cooling. I would like to ask your opinion as to why I have temperature fluctuations while underway at certain points. I would like to know if it is an indication of any potential problems.
When I am under load...
Lou C, I just finished my test run. I checked the oil at the dock and no issues.
I do have some minor temperature fluctuations that I would like to ask about in another thread. They are unrelated to changes made due to the milky oil.
Thanks for your help.
steve
I need to elaborate on my winterizing of the cyclinders…2oz of oil in the center of the fuel filter, which is post filter, shut off fuel, run until it dies…this is in the merc manual for the lay up procedure.
Thanks
Lou C, thanks. You are absolutely right about that. Running the boat on plane is what revealed the problem in the first place. I will put the drain plug back in and take it for a spin. Hopefully then I can winterize with confidence.
Question, I normally fill my fuel filters with 2oz of 2cycle...
Ya, that’s my question, the oils is brand new from winterizing. I can change it again. But if it would evaporate out then I really don’t need to do I?
Sarnone
Many thanks to everybody you have their input. I bought gaskets and permatex nonhardening. I cleaned up and made sure the joints were flat. I reassembled everything, fired up the engine and after some time checked and the milkshake was gone. Gonna change the oil and re-winterize.
Thanks
Sarnone
