black and white smoke
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Tuned
Joined: Nov 2002
Posts: 348
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From: Benson, AZ
black and white smoke and fuel tank problems
My 86 F250 is pouring out black smoke (more than normal) under heavy acceleration then all of a sudden it changes to white with a diesel smell. while i am at about 35 - 40 it is dumping out white smoke and not black is this caused by timeing? if not any ideas.
Also I am having problems with my switching valve for my front and rear tanks. I was wondering if 1) the any of the idi diesels had electric pumps in the tanks 2) if they had the newer style switching valve and 3) could it be adapted to an 86 F250 I checked with the local Ford dealer and it is unavalable.
thanks for your help
Scott
Also I am having problems with my switching valve for my front and rear tanks. I was wondering if 1) the any of the idi diesels had electric pumps in the tanks 2) if they had the newer style switching valve and 3) could it be adapted to an 86 F250 I checked with the local Ford dealer and it is unavalable.
thanks for your help
Scott
Last edited by macman85602; Aug 19, 2004 at 12:00 AM.
Posting Guru
Joined: May 2004
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From: Prince George, B.C.
IDIs had no electric pumps, I don't know about the switching valve but it probly could be adapted. It sounds like you could be either picking up air or the advance on the pump is way out of whack. I'm sure there is someone on here who knows more about it though. My tracktor did do the black then white thing right as it sounded like I had a stuck valve and died but I know that was air because it fired right back up.
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Tuned
Joined: Nov 2002
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From: Benson, AZ
I thought that some of the later IDI 7.3s had electic pumps. i was also thinking of bypassing the lift pump and just installing an electic pump there also to make it easier to pull the fuel foward. any ideas?
scott
scott
Posting Guru
Joined: May 2004
Posts: 2,161
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From: Prince George, B.C.
If it has a lift pump on the engine it won't have electric, I have an electric on our '90 to bypass the lift pump because it went, we get air in our system but with the elecrtric it usually pumps it out before the truck starts. If you get an electric pump go for the 8psi Carter unit (silver pump I think) it is an impeller type pump vs. the stupid little pulsating thing I have on ours, they wear out very fast compared to the carters. http://www.jegs.com/cgi-bin/ncommerc...10&prmenbr=361 P/N:180-P4600HP It should do the trick. These usually out last the truck.
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