Oil weeping from everywhere

[nieboo]

Here is a case for the experts among us.

My 80 with a 1HD-FT engine recently had a gearbox, injectors and injection pump overhaul. Since then - but this might coincidental - it is losing oil from mainly the EGR valve and along the block below the air inlet side around cylinder #6. It has had low oil pressure indication for as long as I have owned it. I can feel no pressure on the cranckcase, when I take out the oil dip stick and have not noticed a big change in the oil level. There is some weeping from the PCV hose as well - both at the cam cover and the air filter sides. The engine runs smoothly though. I will post some pics below. For some reason 2 are in the wrong orientation... Sorry for that

I am trending to a turbo related issue - anyone with another idea ? Thanks for any input.

 

[Towpack]

That is a lot of oil. Some is originating from the crankcase breather, they nearly all do it but there could also be some from the turbo. Remove and flush out the intake pipe from the filter housing to the turbo and maybe fit an oil catch can in the breather hose from the rocket cover which will eliminate most of the oil upstream of the turbo.
Also check the rocker cover gasket for leaks.
I removed the EGR valves from mine some time ago and blanked off the ports. If you remove the crossover pipe you'll probably be horrified at the amount of thick black crud that's built up in there.
Do you get any oil smoke on acceleration or under power? This could be from the turbo.
Removing both the rubber air inlet and outlet hoses from the turbo and starting the engine can reveal any oil leaks from the turbo seals. Holding a piece of stiff white card in the airflow from the outlet will show any oil being blown out.
Obviously be VERY CAREFUL not to let anything fall in or get sucked into the turbo inlet or engine intake as it won't end well.

 

[nieboo]

That is a lot of oil. Some is originating from the crankcase breather, they nearly all do it but there could also be some from the turbo. Remove and flush out the intake pipe from the filter housing to the turbo and maybe fit an oil catch can in the breather hose from the rocket cover which will eliminate most of the oil upstream of the turbo.
Also check the rocker cover gasket for leaks.
I removed the EGR valves from mine some time ago and blanked off the ports. If you remove the crossover pipe you'll probably be horrified at the amount of thick black crud that's built up in there.
Do you get any oil smoke on acceleration or under power? This could be from the turbo.
Removing both the rubber air inlet and outlet hoses from the turbo and starting the engine can reveal any oil leaks from the turbo seals. Holding a piece of stiff white card in the airflow from the outlet will show any oil being blown out.
Obviously be VERY CAREFUL not to let anything fall in or get sucked into the turbo inlet or engine intake as it won't end well.

Thanks for your ideas. It confirms what I was thinking. As for the catch can, I am not sure what to do. I have read different opnions on that too - from good to causing engine over pressure issues. But it is the easiest to install and try out. I will pull the air inlet to the turbo and feel for play to start with and clean out the EGR and crossover tube. Maybe block off the EGR at the exhaust manifold, while I am in there. Has to stay put to fool the MOT...
I will keep you posted

 

[nieboo]

That is a lot of oil. Some is originating from the crankcase breather, they nearly all do it but there could also be some from the turbo. Remove and flush out the intake pipe from the filter housing to the turbo and maybe fit an oil catch can in the breather hose from the rocket cover which will eliminate most of the oil upstream of the turbo.
Also check the rocker cover gasket for leaks.
I removed the EGR valves from mine some time ago and blanked off the ports. If you remove the crossover pipe you'll probably be horrified at the amount of thick black crud that's built up in there.
Do you get any oil smoke on acceleration or under power? This could be from the turbo.
Removing both the rubber air inlet and outlet hoses from the turbo and starting the engine can reveal any oil leaks from the turbo seals. Holding a piece of stiff white card in the airflow from the outlet will show any oil being blown out.
Obviously be VERY CAREFUL not to let anything fall in or get sucked into the turbo inlet or engine intake as it won't end well.

And no, I am not getting more smoke (I can see...) under acceleration. Kind of weird.

 

[frank rabbets]

Be careful not to clean the inlet manifold, or even be tempted to do so. Debris can be sucked in to the combustion chamber and lock a piston(s) leading to severe damage. This happened to someone on here years ago.

 

[Towpack]

I fitted a catch can from a Vauxhall car which works a treat. It offers no back pressure to the crankcase breather so is not detrimental in any way. I just flush it out every 2-3k miles or so.

 

[nieboo]

Be careful not to clean the inlet manifold, or even be tempted to do so. Debris can be sucked in to the combustion chamber and lock a piston(s) leading to severe damage. This happened to someone on here years ago.

Yeah, I can see how that would be a bad idea. Only way I would do it is by removing the whole thing and clean it like that. But thanks for the pointer

 

[nieboo]

I fitted a catch can from a Vauxhall car which works a treat. It offers no back pressure to the crankcase breather so is not detrimental in any way. I just flush it out every 2-3k miles or so.

OK, I will give that a try before I do anything else. Might be the easiest fix. Cheers

 

[frank rabbets]

I took my crossover pipe and inlet manifold in the bath with very hot water and lots of washing powder (wife asleep) it got them very clean indeed and also the bath.