OT sorta Duetz engine experts

farmer656 · Oct 5, 2018

4 cylinder mounted on large vacuum / water pump, ran perfect for 3 days and nights constant, they were running engine at high idle, ok here were it starts, foreman says using to much fuel, took it back to an idle for about 6 hrs, then all of a sudden starts blowing oil out the exhaust pipe, and not just a little, would cover a piece of cardboard in no time, I did some research and what I understand these engine are not to be run at an idle for very long, took off exhaust manifold to see which one was pumping oil,, well all of them are , is this a sign of blown head gaskets , has 4 heads on it, or something deeper ?

Al Baker(pumpman) · Oct 5, 2018

I would chech to see if it has the cold weather start. This is a fuel line running from the return side of the fuel system to the intake. I have seen many times the solenoid mess up n fill the intake with fuel. Most tractors have these disabled. Bad head seals or fire rings on a Deutz will make a loud popping sound under acceleration, or load when leaking. Raw diesel will exit an engine black n look like oil from the carbon in the exhaust ports or muffler. None of the cylinders share any thing except manifolds. If you are wet stacking and using to much fuel I would be think you are seeing fuel, not oil. Al

farmer656 · Oct 5, 2018

its oil for sure , I have a 706 that wet stacks,

Mike M · Oct 5, 2018

Some of those are oil cooled and a blown head gasket will let more oil in ? Some also have timing belts. Don't know if they can jump time or just self destruct when they let loose.

Billy Shafer · Oct 5, 2018

I don't think Duetz engines like running with a light load.

unclesilo · Oct 5, 2018

open it back up to high idle and tell your foreman to get away and more than likely the slobber will leave or it has on the two tractors and the skid that have duetz

farmer656 · Oct 5, 2018

already did that , did not clear up,

unclesilo · Oct 5, 2018

something odd then happened and there is a chance it is in the blowby tube there is a reed type valve in the tube and it went bad in my skid loader and once fixed stopped the slobber. Good luck and I bet it will be simple when you find.

Ian Beale · Oct 7, 2018

Billy

I was brought up on the view that diesels in general didn't like extended light loads or they would glaze the cylinder and lose oil control.

IIRC you can get a fuel additive that turns to mild abrasive when it burns to treat the problem.

Or you add Bon Ami down the air intake for the same effect

Determined · Oct 7, 2018

Just a few ideas to bounce off the wall.

Does it have a turbo on it?

How much blow by coming out of the oil fill or dipstick hole when running?

Not logical for a ring, valve or gasket fault to develop on all cylinders at the same time.

Within reason oil entering the cylinders should just burn off as fuel.

What is the condition of the oil, clean, watered down, baked?

Has oil pressure or engine temperature changed noticeably running it at idle versus at high idle?

Soot mixed with raw fuel can resemble oil, has the oil level dropped enough to confirm that it is oil coming out?

Might just need to get it good and warm for it to clean itself out, maybe some cardboard to restrict the air flow for a short period of time.

OT sorta Duetz engine experts

farmer656

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Al Baker(pumpman)

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farmer656

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Mike M

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Billy Shafer

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unclesilo

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farmer656

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unclesilo

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Ian Beale

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Determined

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