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  #11  
Old 12-29-2013, 09:22 AM
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Quote:
Originally Posted by jksweld View Post
Well my Big 40 is giving me trouble, . Checked out the situation an seen oil burping out the fill tube/dipstick.
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Originally Posted by Dr Dean View Post
Black smoke and lugging down are also symptoms of lack of air. Check your air filters and if it has one the turbo.
If you see the oil blowing out the dipstick you have a bigger issue than a plugged filter.

Things that cause a crankcase to pressure up are:
1. breather tube or pcv valve plugged off.
2. water in fuel caused a damaged injector to wash out a cylinder wall. This then added fuel to the oil level, raising and thinned it. Blowby is forcing this up as it foams from the crank agitation.

I have seen no mention of oil level or condition. fuel in oil will show a clear ring around a drop placed on a paper towel.

Until this is solved I would not run the engine under load.
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  #12  
Old 12-29-2013, 07:33 PM
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Iron man is on the right track.
Let it sit overnight, check the oil level, if it is high only two things will cause this.
Coolant or Fuel in the oil.
Pull the drain plug, be ready to put it back in. If antifreeze/water comes out first then oil, this is indicating a blown head gasket, or a crack somewhere letting water in to the crank case.
Or, after establishing the correct oil level, it continues to "make oil", raising the oil level on the dip stick. Injector is stuck open. pull the injectors have them tested and rebuilt.
If an injector is stuck open or partly open, there is you black smoke. If its really bad it can raise the effective compression ratio to the point that it will lug the engine also. It can even result in a bent connecting rod.
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Last edited by GAS; 12-29-2013 at 07:41 PM. Reason: edit to clarify
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  #13  
Old 12-29-2013, 09:01 PM
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Aw crap I forgot about the oil coming out of the dipstick! Yeah that changes things. Blow by and low compression on at least one cylinder. Could be broken rings, scored cylinder, hole in piston. I had a tractor come in that was running a generator in a snow storm, it had sucked the air filter full of snow and cost the guy an overhaul. The engine had 3 of 6 cylinders scored and lots of blow by. I've also had engines "dusted" from air leaks after the air filter. In those cases the cylinders are worn to the point that it has so much blow by the breather can't take all of it so it blows the dipstick out.
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  #14  
Old 12-30-2013, 01:46 PM
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Not sure how that injector pump works, but I've seen fuel get into the oil via a bad seal on the pump shaft in the injector pump.
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  #15  
Old 12-30-2013, 02:15 PM
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Lots of input and conjecture...

BUT..

not much of any feedback or update from "jksweld"...

any news????

is the engine even a Teledyne TMD-20 3cyl watercoolsd diesel ????????????????
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  #16  
Old 03-17-2017, 07:04 PM
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Hey all

was on here looking around and realized I never posted any update on the big 40. Ended up being a few wires that was bare, insulation chewed off by a mouse. Had gotten together and caused the issue. Rewired all the mouse eaten wires and has ran fine ever since!!!
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  #17  
Old 03-17-2017, 07:44 PM
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Thumbs up

Glad you got it fixed............
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  #18  
Old 03-17-2017, 10:02 PM
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Glad you got it fixed............
Yeah, and an easy fix at that...
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  #19  
Old 03-18-2017, 07:27 AM
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Mice...Natures leetle wrecking ball.....
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