DF140 Water in Oil - Page 6

WEDOCQ · #51 (**permalink**) 02-02-2012, 11:37 PM

Egorena,
You haven't posted in a while. I was just checking in to see how things are going. I have been in a 9 month battle myself. I think I may have finally taken the upper hand. we shall see.
-Shawn

Egorena · #52 (**permalink**) 02-11-2012, 01:02 AM

Well! Let's see what happens. Just ran the engine for an hour and a half tied to the dock. Broke down the engine completely. Sent the block to the machine shop and had some pitting damage repaired to the exhaust outlet area where it couples to the holder. I had already had this done to the holder. New rings, inserts, gaskets and oil cooler. Had the head checked at machine shop and no cracks were found. As always, it ran like a clock. I am breaking it in and started at the dock. Checked for leaks, checked oil every fifteen minutes and ran a warm up for 15 minutes at 1,000. Picked it up to 1500 for fifteen minutes, 2,000 for fifteen, 2,100 for fifteen, brought it back down to 2,000 for the final thirty and started a 5 minute cool down at 1,000. No water in oil, but it never has at low rpm's. I will pick it up when I go run the boat in the bay. I did this preliminary at the dock because of my teachings in the heavy diesel marine engine break in practices. We would overhaul a Cat or GM or Cummings and check for leaks, coolants, and loose clamps. Once that was done, we would double or triple the moorings to the dock and put the engine in the corner for several hours. I put a heavier load on the engine by keeping it tied to the dock. Time to go fishing, I will keep you informed. Oh yes, not a single drop of water came out of the exhaust pipe next to the pee hole and the water pressure was at 8 lbs.

WEDOCQ · #53 (**permalink**) 03-07-2012, 02:24 AM

Egorena,
You haven't posted in a while and I am really hoping things all turned out ok for you!
-Shawn

Egorena · #54 (**permalink**) 03-13-2012, 09:33 PM

OK! Verdict is in. Everything went well. I have come to the conclussion that overheating around the # 4 cylinder caused the water to leak into the oil pan. I conclude this to the time line of events. When I first overhauled the engine, no water in oil thru the break in period and shortly after. The shale that I found around the # 4 water jackets was completely around the bottom half of the water jacket. It had broken off the rest of the water jackets and come down to # 4. Evidently, I inspected the block back then and everything looked so perfect (the shale) in the water jacket that I washed, blew out with airpressure, but never thought of scraping with a scraper. Eviedently the previous owner never flushed this thing out properly. I scrapped everything out and it was amazing the amount I pulled out. I previouly mentioned that I had read an article on excessive expansion in hot spots on aluminum head and block engines. This condition would excessively pinched the gaskets involved and caused problems. I have thoght about this carefully and preclude that this is what transpired in my case. Oh yes, didn't catch a single Red last night. Had to run 11 miles by instrumentation (GPS) only. Fog was like pea soup. Made it back safely, thank you lord and thank you Standard Horizon.

WEDOCQ · #55 (**permalink**) 03-14-2012, 01:15 AM

Wahoo! I am so glad for you Egorena. Way to persevere!
-Shawn

Egorena · #56 (**permalink**) 04-09-2012, 10:59 AM

Greetings everyone. All is well with this DF-140. No water in oil, running great, hasn't burn a drop of oil. Will be changing oil soon, running non detergent strait 40 weight. Will be going to a 10/40 after this. Thank you everyone for the advice, in my case, it was overheating in the #4 (lower) cylinder due to build up in the water jackets that broke loose. Need to see clean aluminum. Lesson learned!!!!