I am looking for advice on a problem with my Perkins
6.354 diesel engine
I recently installed it to replace my Renault 6 cyl. I purchased it from a guy who had purchased it to install in his boat but decided that the project
was beyond his capabilities. He sail that it was sold to him as "recently rebuilt"
I had to disassemble it to a long block to get it into my boat and all the machined surfaces looked new and the cylinders had a nice cross hatched hone.
I recently got it running and took the boat out for 6 hours of sea trials. The engine
ran great and temp remained around 180F.
After every thing cooled down I checked the fluids. Oil
was right on full. When I checked the coolant
it was a brown color. I drained it and it appeared to have a oily residue. I filled with clear water
and idled up to temp and drained. The water
was dirty looking with more oily residue. I decided to clean the system so I added 1/2 box of dishwashing powder with clear water and once again the water was dirty looking. No standing oil
but sure seems oily.
I re-torqued the head
and checked rocker arm clearance and ran clear water thru again and still dirty brown. I did notice some rusty powder in the bottom of the bucket once all the water evaporated.
My next thought was the oil cooler but quickly realized it was raw water
The only part on the engine that is not OEM is the exhaust
manifold. I purchased a stainless steel
unit that is beautifully fabricated from a company in LA.
Any ideas on what the problem could be? The engine runs great and doesn't run hot so I'm hoping that rules out a head gasket
There does not appear to be any water in the oil sump. The level is still exactly on full. I'll drain the oil next to confirm.
Thanks in advance for your advice.