Question about 1999 Isuzu Trooper

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1999 trooper 4JX1 fuel black

My trooper would fire then die in mornings but would eventually start.Start ok when hot. removed fuel filter and it was full of black fuel! new filter fitted and started fine but what can be causing this. The recall work on injectors has been done. thanks

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Engine oil leaking past injector O rings and going into fuel return hose back to tank contaminates tank. if recall done are O rings ok? can put clear plastic tube on return fitting in rear of head to see if black (contaminated with oil) or air leaks, from cold start, it isnt high pressure
it could be from before or now?

Posted on Jul 27, 2009

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