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help!!Any ideas whats wrong

Tech Talk for Nissan owners.

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Posts: 56
Joined: Mon May 17, 2004 8:44 pm

help!!Any ideas whats wrong

Post by sideways »

I have a 4.2 diesel GQ and just recently just had my injector pump upgraded,i went out for the frist time a week or so ago and when driving up a long slipery hill , about 3500/4000rpm the car started to cough and splatter and white smoke came out of the exhaust the revs then dropped bact to about 1500 and away we went, till it got to 3500rmp.
Is the fuel pump not set correctly? is the turbo boosting to much/is it knackered? or is the boost compinsator set wrong and not letting fuel through at high rpms?
I can free rev it and nothing like this happens , it only seems to do it when its under load. I had none if this happen before the pump was done
Any help/ ideas would be great
Cheers
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Location: Lilydale

Post by Dzltec »

You have a fuel restriction or sucking air problem. If all this is ok, then you have a pump problem.Did this happen before you did the pump?

The place that modded the pump, are they not able to help you?



Andy
www.diesel-tec.com.au Ph 03 9739 5031
Ball bearing turbo upgrades for factory turbo vehicles. Got a diesel question just ask.
Home of the twin turbo shorty and many 150rwkw+ patrols.
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Post by bogged »

Dzltec wrote:The place that modded the pump, are they not able to help you?
x eleventy!!!!
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Post by Reddo »

WHITE SMOKE

White smoke usually occurs when there is not enough temperature to burn the fuel. The unburned fuel particles are then exhausted usually by a rich fuel smell. In cold weather it is not uncommon to get white smoke until engine temperature builds up. One cause of white smoke on engine start up could be faulty glow plugs or glow plug system. Low engine cranking speed can also create an excessive amount of white smoke.

If the problem persists after the engine is up to operating temperature several other things should be checked. A faulty injector can cause white smoke. Timing is often a factor when white smoke is excessive. Low engine compression can cause the problem and the injection pump can also have problems that result in white smoke. Air in the fuel system can also result in white smoke.

thats taken from here

http://www.difflock.com/diesel/troubleshooting.shtml



i'd be taking that pump back and giving it to them.....
Nice gq swb ute chop with a huffer for the good times
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Post by 300WinMag »

Try adding a electric fuel pump before your filter it maybe that you internal lift pump cann't keep up to your upgraded pump. I put a Facet pump in mine and no more problems, alot of guys run holley reds, what ever you use it needs to be able to flow if it has no power.
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Joined: Mon May 17, 2004 8:44 pm

Post by sideways »

this didnt ever happen before the pump was up graded, the people who did the pump also put new injectors in at the same time , i would take it back to them but they are in perth and i m now in melbourne .

Thanks
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