Crankcase Vent?
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New User
Joined: Jan 2006
Posts: 24
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Crankcase Vent?
I was looking under my truck today while warming it up for an oil change and Fumoto valve install and I noticed a little bit of what looked like exhaust "smoke" drifting down from the right side of the engine in the sunlight shining under the truck. It wasn't much and didn't appear to be under high pressure. It had to be exhaust, because I had just started the engine. I guess it could be coming from anywhere and being blown down by the fan. Is there a crankcase vent or something where this could be coming from?
All the turbo hoses, etc. seem to be tight.
All the turbo hoses, etc. seem to be tight.
Senior User
Joined: Aug 2006
Posts: 125
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I was looking under my truck today while warming it up for an oil change and Fumoto valve install and I noticed a little bit of what looked like exhaust "smoke" drifting down from the right side of the engine in the sunlight shining under the truck. It wasn't much and didn't appear to be under high pressure. It had to be exhaust, because I had just started the engine. I guess it could be coming from anywhere and being blown down by the fan. Is there a crankcase vent or something where this could be coming from?
All the turbo hoses, etc. seem to be tight.
All the turbo hoses, etc. seem to be tight.
Crankcase vapors (Stock) are routed to the intake just before the turbo.
Fleet Mechanic
Joined: Jan 2007
Posts: 1,708
Likes: 7
From: Circle City
I bet the leak is at the head where it mates up to the exhaust manifold. Take a flashlight and see where each of the 4 ports are connected with 2 bolts each, see if there is black soot on the machined part of the head as there is no gasket between the heads and the exhaust manifold.
This is also a sign that inside the up pipe, the egr scoop should be removed.
This is also a sign that inside the up pipe, the egr scoop should be removed.
