INJECTOR PUMP AND BLACK SMOKE

Asked by May 08, 2011 at 10:11 PM about the 1996 Dodge Ram 2500 ST Extended Cab LB

Question type: Maintenance & Repair

can anyone tell me I just changed the injector pump, and now it is finally running but it has a lot of black raw like smoke coming from exaust since and the preasure is not great. what am I  missing?

6 Answers

12,655

what pressure are you talking about boost or fuel pressure? if its boost your turbo is prolly shot or the waste gate is stuck open, low boost pressures will cause lots of black/grey smoke. or you could just have your fuel plate in the wrong position

1 of 1 people found this helpful.

thanks it narrowed down things abit. will be checking it tonight.

665

It wouldnt be the turbo, because it would be easily spotted. I think it would be the fuel plate if its a 12V. But either that or since you have a new injection pump, you might have the fuel turned up, and its not getting enough oxygen to the engine, creating the smoke

1 of 1 people found this helpful.
12,655

thats not true at all, a waste gate could be stuck open and the truck would spool and ever but due to the fact that its not creating optimum boost pressure you get black smoke thats a problem that you could easily miss. like i said greyish smoke is going to be due to some thing wrong with the turbo or a bad injector seal, straight black smoke is going to be the fuel plate in the wrong position. but if your talking TONS of black smoke its deffinitely some thing wrong with the turbo not spooling since if your turbo doesnt spool correctly you dont get air into the engine

665

Unless he/she installed a wastegate, I would agree with you. But from factory, these trucks do not come with a wastegate.

40

I have a 2005 Dodge Ram with 5.9 Cummins Missing real bad and no power Blacksmoke what could it be I just put new injectors

3 of 3 people found this helpful.

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