Black Smoke and Engine Knock
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Joined: Sep 2011
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Black Smoke and Engine Knock
I added Diesel Kleen to my truck last Friday before a camping trip. I've been using it regularly w/o any problem. However, this time I put in extra. I used two of the 40 gallon treatments after I was told that you really couldn't use too much (within reason). Now, my engine has a weird knock to it and is putting out a ridiculous amount of smoke at any RPM. When I accelerate, you can't even see the cars behind me. When I'm cruising or idiling, it looks like the cars behind me are driving through fog. Also, it is running rough and sometimes has a hard time starting. Is this from the DK or is it just coincidence (I had 3 injectors replaced 18 months ago)? Anybody have any ideas or suggestions?
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Joined: Aug 2006
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From: Whittier, CA
I vote for coincidence. I have read that some guys fill their upper filter canister with DK after a filter change, and they didn't mention any smoking. I do not think DK will cause it to smoke.
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Also, it shakes pretty good at idle. The knocking sounds a little higher pitched than the engine iteslf. The problems developed in a very short amount of time (a couple of days). However, I did notice a little (very little) extra exhaust when accelerating a few weeks ago.
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Hotshot
Joined: Apr 2010
Posts: 19,066
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From: Saratoga Springs,UT
sounds like an injector stuck on
and I wouldnt drive it it may hydrolock
have you scanned for codes
if an injector is stuck on it may burn a hole in the piston
and I wouldnt drive it it may hydrolock
have you scanned for codes
if an injector is stuck on it may burn a hole in the piston
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Hotshot
Joined: Dec 2003
Posts: 15,368
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From: Stuttgart, Ar
I vote for injector nozzle failure or a leaking injector washer. Knocking could be from an overfuel issue and it's VERY easy to burn or melt a piston when this happens. Do a balloon test or a bubble test--your mechanic should know how to do that.
Hotshot
Joined: Dec 2003
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From: Stuttgart, Ar
I think that would be a wise decision. Burning a piston will cost you $$$$ more than a tow bill.
Hotshot
Joined: Apr 2010
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From: Saratoga Springs,UT
X2 tow it
the last person that pushed there truck had to buy a long block
I beleive they were in BFE when it happened
Senior User
Joined: Sep 2006
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From: northeast missouri
same thing just happened to me. leaking egr cooler putting coolant into intake, caused three injectors to stick open. after the egr was deleted two of the three came out of it. number 5 injector was stuck open. i had the same smoke and it was a terrible raw fuel smell. the deisel tech that did my work said that he sees the injector sticking open alot with a leaking egr cooler but they work after the egr is fixed. he said most times they stick closed but something about the coolant makes them stick open