ccv mod
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Joined: Nov 2005
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ccv mod
Hi i recently re routed my ccv to the ground but i was wondering why there is so much pressure in the ford systems. When im at a stop light I can see the vapor from in the cab. This seems a little excessive to me??
Lead Driver
Joined: Jan 2006
Posts: 7,308
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From: Hartford, WI
55000 miles ago I had to pull the head on my 99 E300 Turbodiesel MB. Head and intake tract were cleaned out. The CCV there went in before the turbo for better vacuum. Well, the intake after the EGR had black sticky stuff in it from both the EGR and the oil fumes. Before the intercooler it was ok. Most of us think it is the combination of the cooler oil fumes and the carbon from the EGR that does it. That is just a 3L turbodiesel. We are running a 7.3L Turbodiesel. It does build up quite a bit of oil fumes.
Posting Guru
Joined: Dec 2004
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There isn't anything wrong with the Ford engine. Blowby with diesels is normal - and the more power they make, the greater they blowby. That's why many diesels have black oil even if the oil was changed recently - it collects soot from the blowby.
That is also why big rigs run crankcase filters like the Racor - they are required to route the CCV to the engine to be burned. But to run it unfiltered through the turbo/intercooler creates the exact same problem we have on the PSD (and many diesel cars, too, for that matter).
I occasionally work around tractors and equipment that is not required to burn crankcase vapors. They ALWAYS have a stream of smokey air blowing out the crankcase vent - even if they are new. First time I saw one, I thought the rings were shot - as they would be, if it were a gasser. The operator said, "Naw. It's just a diesel. It's normal. If it had bad rings, smoke and oil would be spewing out."
That is also why big rigs run crankcase filters like the Racor - they are required to route the CCV to the engine to be burned. But to run it unfiltered through the turbo/intercooler creates the exact same problem we have on the PSD (and many diesel cars, too, for that matter).
I occasionally work around tractors and equipment that is not required to burn crankcase vapors. They ALWAYS have a stream of smokey air blowing out the crankcase vent - even if they are new. First time I saw one, I thought the rings were shot - as they would be, if it were a gasser. The operator said, "Naw. It's just a diesel. It's normal. If it had bad rings, smoke and oil would be spewing out."
