bue smoke ??
Lead Driver
Joined: Feb 2011
Posts: 8,241
Likes: 155
From: L.A. (Lower Alabama)
Blue smoke is usually oil. Turbo seal is a common failer. You can pull down pipe on the back of the turbo and check for oil "swirl" inside the pipe. Could also be blow by on rings/valve guides and valve seals. Pull oil filler cap and watch smoke coming from crankcase. A little bit is common but if it smokes like a freight train it's likely blow by. It's possible on a high mileage motor to get a lot of oil in the intercooler and large connecting tubes, cleaning that out may help for a while.
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Tuned
Joined: Feb 2008
Posts: 445
Likes: 1
From: Forest Grove, BC
I just did stc fitting, stand pipes, dummies, drove ror about 40 miles after that and now back in shop doing the injector seals and O-rings,
When I pulled the inlet off the turbo, there was a small collection of oil at the turbo inlet.
Turbo was installed by ford 25k ago, maybe bad seal in turbo??
The truck has 160,000miles on it. always did oil and filters befor due, I have oil rails off and valve train looks clean as a whistle.
I guess a compression check would tell if I have a bad hole??
When I pulled the inlet off the turbo, there was a small collection of oil at the turbo inlet.
Turbo was installed by ford 25k ago, maybe bad seal in turbo??
The truck has 160,000miles on it. always did oil and filters befor due, I have oil rails off and valve train looks clean as a whistle.
I guess a compression check would tell if I have a bad hole??
Lead Driver
Joined: Feb 2011
Posts: 8,241
Likes: 155
From: L.A. (Lower Alabama)
I think turbo seal commonly leaks to the outlet side of the turbo. Compression test is a good idea if you suspect piston rings but doesn't tell you much about valve guides. Leak down test works better if you have the equiptment. Several threads lately on that subject.
Watching how much smoke comes out of the oil filler cap gives a good general idea of how much blow by you have.
There could be a problem with crankcase vent and you have a lot of oil in the intake tubes and intercooler. There isn't a drain on the intercooler, you'll have to pull it and pour it out to check.
Watching how much smoke comes out of the oil filler cap gives a good general idea of how much blow by you have.
There could be a problem with crankcase vent and you have a lot of oil in the intake tubes and intercooler. There isn't a drain on the intercooler, you'll have to pull it and pour it out to check.
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