Printable View
It is a problem on all vehicles and age. The combination of fine oil vapour from turbo seals and crankcase recirculation combined with the soot from the EGR provides the buildup you can see in the photos I posted. That buildup will grow and marginally affect performance longer term as the shape of the intake changes. It's not the end of the world, but not great either.Quote:
Originally Posted by DieselLSE
My son in law was getting limp home errors on his 200,000km old Pajero due to low turbo boost. They tracked it down to the EGR causing a blockage in the inlet manifold. When he pulled it apart you could only just see light at the other end of the manifold. It was probably 80% or more blocked by the same soot as in your photo. Much, much worse than that photo. Not the oily stuff, just the carbon in the first photo.
Is there any evidence that EGR reduces engine life? I mean what if we just cleaned the EGR every so often.... hypothetically at least.
I don't believe it would harm the engine however cleaning it effectively is not easy by any stretch of the imagination. Any method that injects a cleaner with the engine running is forcing large clumps of the EGR muck into the cylinders and out the back of the car. I've considered it but there is a risk of engine damage with that method. The only way to clean out the muck is to remove the intake manifolds and throttle body. Throttle body is easy, manifolds not so.
I've used induction cleaner at about 240,000km. It helps.
Do you remember which one exactly?Quote:
Originally Posted by rar110
Revive.
These websites provide reasonable info.
SP Diagnostics - Revive Turbo Cleaner
Bring Your Engine Back To Life - Questions
Can someone tell me how the oil from the catch can is routed back into the sump?
The most common method of dealing with the contents of the can is a tap/valve on the bottom of the can. The contents are drained periodically and disposed of, rather than being put back into the engine.