Is this normal ?
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Freshman User
Joined: Aug 2011
Posts: 40
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From: Ottawa 50% of the time
Is this normal ?
When my 7.3 IDI Diesel is idling, there is a light stream of grey smoke that comes out of the exhaust pipe.
There isn't lots of it, just a little bit of it.
It is worse when the engine is cold, but is still there when it is fully warmed up.
The engine has 286,000 miles, so is it just normal for a high millage diesel ?
There isn't lots of it, just a little bit of it.
It is worse when the engine is cold, but is still there when it is fully warmed up.
The engine has 286,000 miles, so is it just normal for a high millage diesel ?
Senior User
Joined: Sep 2010
Posts: 495
Likes: 0
From: Florida
Is it just at startup, because if it is and then goes away it is normal if it is really dark and excessive and goes away i may me a gp or two or three.
Other than that idk. Look in the search box "smoke at idle" or "grey smoke while idle" ect. for this fourm and see if any threads show .
Other than that idk. Look in the search box "smoke at idle" or "grey smoke while idle" ect. for this fourm and see if any threads show .
Posting Guru
Joined: Feb 2011
Posts: 2,216
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From: Princeton MN
No more then likely unburned fuel. Cause can be injectors not atomizing the fuel properly, if its spotting or come in bursts it could be a lone injector. But to start off with cleaning your cdr valve is the first step, it my be letting alot of oil vapors into the intake. The valve is located on the back of the intake manifold, it looks like a tuna can and is held on with two bolts, be careful when you pull it out there is a plastic stand pipe attached to the bottom that goes into the valley pan, so be careful not to crack it.
Laughing Gas
Joined: Apr 2011
Posts: 1,002
Likes: 7
From: London, KY
I'm getting ready to pull my CDR off and clean it as well. I read that some use mineral spirits to clean them with. Anything else I can clean it with?
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From: Marianna, Florida USA
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