White smoke?
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Senior User
Joined: Jun 2006
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From: Tonganoxie, Ks.
White smoke?
Just put in a new injector pump a DB2 something and now I am blowing white smoke at idle. It is cold out about 35 degrees but the truck kept smoking when it got up to temp. THe smoke does not smell sweet or strong of fuel and now I am wondering what is up. I did not replace the injectors when I did the pump and the truck used to not smoke like it is now, of course it was warmer back when it had the old pump on. I do not know what the injectors are but the pump I removed was not a turbo pump.The truck runs good and has good power and all maybe its the cold weather? Anyone have any thoughts on this? It sure does punch the boost on the turbo up faster than it used to. The engine sound real smooth.
Post Fiend
Joined: Nov 2003
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From: Nutter Fort, WV
The timing may be a bit retarded.
If your temp is like ours it could also just be moisture condensing out of the exhaust.
We are seeing teens in the days and single digits above or below zero at night.
Almost made it to 20 today, that was our high temp for the last two weeks.
If your temp is like ours it could also just be moisture condensing out of the exhaust.
We are seeing teens in the days and single digits above or below zero at night.
Almost made it to 20 today, that was our high temp for the last two weeks.
Posting Guru
Joined: Sep 2002
Posts: 1,897
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From: Northeastern Pa - USA
as mentioned above, you could have one or both problems. the new pump is pushing more fuel than the old injectors are used to ... weak injectors. OR the timing could be off just a tad and the fuel is nt getting burned properly.
if you adjust the timing (top of the injection pump to the passenger side) move it with the engine off and ever so slightly. the thickness of the stake marks on the pump mounting flange will give you 5 degrees of movement in the timing.
also , if you removed the old pump by removing the tower cover, you could be off with the timing.
if you adjust the timing (top of the injection pump to the passenger side) move it with the engine off and ever so slightly. the thickness of the stake marks on the pump mounting flange will give you 5 degrees of movement in the timing.
also , if you removed the old pump by removing the tower cover, you could be off with the timing.
Freshman User
Joined: Oct 2006
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From: San Antonio, TX
Somebody correct me if I am wrong, I can take it, and please chime in. If the fuel system is opened up, with the possibility of air intrusion from a cracked, or damaged, gasket or o-ring after a repair. Wouldn't white smoke from the exhaust be a symptom of air intrusion to the fuel system?
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1988 F250 7.3 IDI-C6-3.55 rear end
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1988 F250 7.3 IDI-C6-3.55 rear end
Senior User
Joined: Dec 2006
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From: Byron New York
It would run rough and because it is only making half shots of fuel and combustion would be off time becuase the fuel would have to compress the air enough to open up the injector. His engine is running smooth and pushing his turbo better. I am leaning towards timing because of the smoke and injectors because it is a more solid stream of smoke than a rough running air intrusion.
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Posting Guru
Joined: Sep 2002
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From: Northeastern Pa - USA
as long as you didnt remove the gear cover, it should almost be right ... the stake marks (lined up) on the pump and the housing are to get it running. to advance the timing ... with engine off ... loosen the 3 9/16 nuts holding the pump to the engine and rotate the top of the pump to passenger side .. no more than the thickness of the marks. a little movement is a lot of timing.
it may take you and a friend to do it because of the resistance of the injection lines. one to hold the pump and one to tighten the nuts.
it may take you and a friend to do it because of the resistance of the injection lines. one to hold the pump and one to tighten the nuts.
Posting Guru
Joined: Oct 2005
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From: Powell River B.C.
My vote would be for worn injectors. I haven't read any timing advice for a while, so my 2 cents worth is with cold advance on- driving down the road, you have a power stroke rattle, as soon as the cold advance turns off, the rattle goes away= a optimumly timed engine, (buy ear) please correct me if I'm wrong someone!
Elder User
Joined: Apr 2006
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From: South Dakota
Originally Posted by Dave Sponaugle
The timing may be a bit retarded.
If your temp is like ours it could also just be moisture condensing out of the exhaust.
We are seeing teens in the days and single digits above or below zero at night.
Almost made it to 20 today, that was our high temp for the last two weeks.
If your temp is like ours it could also just be moisture condensing out of the exhaust.
We are seeing teens in the days and single digits above or below zero at night.
Almost made it to 20 today, that was our high temp for the last two weeks.
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