Lister Engines > Listeroid Engines
another disaster: silver gunk in new oil
tyssniffen:
So, in a move that normally wouldn't happen, I re-opened the engine after changing the oil a couple days earlier, and found silver gunk all up on the sides.
It's not magnetic, so that means it's not bearings or shafts, right? and means it's probably the cylinder jacket... right?
I've had stuck rings in the past, and fixed that, and she still runs in what seems a normal fashion.
What am I looking at, and what do I do to fix it?
You know what would be magical? if for some reason the oil I used has some detergent in it or something that is not compatible with this 6/1 gen. wouldn't that be great? I used
which I've used in the past. But someone make me happy and tell me that's all it is.
mike90045:
could be water in the oil
AdeV:
Hm - is the gunk semi-solid, like grease rather than oil? It sure looks like it from here. Water+oil usually ends up as a white emulsion (the "mayo" you get when your head gasket's gone in a car engine). What was the rest of the oil in the sump like? Clean, or full of silver bits?
Non-magnetic silver coloured deposits could be:
- Chrome (if yours is a Listard bore - i.e. chromed) - I'd say this was highly unlikely, you could pull the head to confirm, there would be extremely obvious damage to the bore.
- Babbitt material, if you're running Babbitt bearings - pull the big end shell to confirm, it's very unlikely (but not impossible, I guess) to be the little end.
- Something non-metallic and weird.
Scrape/remove some of the gunk, add some petrol to thin it down & see what happens. In a glass container would be ideal. If it turns to a uniform liquid with silvery bits in, try running it through a filter paper to see what you get.
Is your dipper attached & splashing lube onto the main bearing feed tray?
Did you put magic pixie dust in your diesel to make it run for longer on the same calorific content ;D ;D ;D? [joking of course...]
tyssniffen:
I’ve seen water in oil before, it’s not just that.
Also, it’s not all completely silver/hunker up. It’s kike this silver stuff is thicker, then the rest is still black oil.
I’ve never changed any part of the oiling system inside, so I don’t think it’s suddenly that. Will try other experiments and report back.
AdeV:
--- Quote from: tyssniffen on January 13, 2020, 10:41:31 PM ---
Also, it’s not all completely silver/hunker up. It’s kike this silver stuff is thicker, then the rest is still black oil.
--- End quote ---
Was any part of the inside of the block painted? Maybe the oil reacted with the paint, if so.
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