Viton Ring Question?
 

If they are connected to the Intercooler, where does the oil come from to cause smoke out of the exhaust, how does the misting of oil occur on the outside of the hose.
Is this the only pipe that has these rings.
Many Thanks.

Rev.

The turbines in the turbo housing require oil to lubricate the bearings on their shafts. They spin at very high revs!. The oil is supplied via an oil hose fed from the engine. If the seals around the bearings are leaking, oil will be blown into the cylinders, mixed with the charge. That will cause blue smoke.
The charge is passed through the inter cooler on the way to the combustion. If there are any leaks, you will see oil here as well.

Thank you.

So why do people suggest replacing these rings to cure any smoke that may occur.

Rev

Hi,
The primary reason the original rings are replaced with viton ones is to ensure there is a proper seal so when you are on turbo boost this is not wasted and thus power output is reduced, the original rings swell in oil!!, and fall off into the intercooler, so there is a leak, so when you put your foot down oily deposits from the exhaust gases are blown off all over the large boost hose that goes from the EGR valve to intercooler.
incidently, when this hose is leaking you should not get blue smoke from exhaust, usually this will be from a blocked PCV valve filter or very rarely a blown turbo seals ( very rare in diesel 75!).

The crankcase ventilation system vents into the inlet, the oil build-up comes from there. If you have a leak at the joint, two things will happen.

1, the oil mist from the crankcase venting system will leak out as there is air pressure from the turbo at those seals. leaking out will make an oily mess!

2, because you are leaking air pressure, your engine is not receiving the air it should be getting, but it is still getting the fuel. So, your engine is being over fueled, which is what causes the black smoke.

Hope this explains it.



Mike

Yes is does many thanks.

Rev

No can do! Bit to far away.

Rev