Question about Isuzu Trooper

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Hi i have a 2002 isuzu trooper when i start it from cold it smokes a lot the smoke is black, the car runs a bit lumpy for a bit and then the smoke clears and the car then runs fine, there seems to be no other faults on the car

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Either the plenum gasket is failing, EGR needs cleaning (try this first), or an O2 sensor or even a water temp sensor. I say water temp sensor because if it misreads too hot it will cause the engine to run rich.

Posted on Jan 15, 2013

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You didn't say whether it is gasoline or diesel, So I will guess it is a gasoline engine. It sounds as though the fuel injections system is leaking fuel into the manifold or combustion chambers while the car sit idle for a while. This would cause the black smoke on start up. After it burns off the extra fuel the smoke would clear up and the engine would run smoothly. The only way to find out if the injectors are leaking is to take it to a mechanic. If the car runs ok, it would not hurt to drive it like it is until such time you could have it repaired.

Posted on Dec 29, 2010


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Black smoke and over reving

this car must be a Diesel as this sounds of a injector pump failure , there are two fine machined plates with groves cut in them "inside pump" after a lot of miles these two machined plates are not so machined anymore and fuel slips by causing the symptoms your describing , pump will need to be rebuilt and flow bench set or replaced with allready rebuilt/set unit to get things back to normal

May 02, 2014 | 2002 Isuzu Trooper

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Sounds like injectors are plugging up. Run a bottle of Diesel fuel system cleaner w/your next tankful. It might take two times but injectors get gummed up easily.

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If you are sure that the engine oil is coming into the combustion chamber, then you have to overhaul the engine. After the overhaul is done, have it calibrated and and clean the exhaust pipe to get rid of the black smoke. And! remember, for diesel engines a big black smoke will always come out the exhaust if you suddenly step on the gas too deep and then over-revving it. (I mean always, that's why roadside emissions people are so stupid when stepping on the gas, they always step on it suddenly and over-rev it, it's a sure fail)

May 25, 2010 | 2002 Isuzu Trooper

2 Answers

Can i replace a 3.0litres diesel turbo engine from a 2002 isuzu trooper with a 3.1litres diesel turbo engine.And if possible how can this be done?

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These can be made to work but its a bit tricky ..

Jan 26, 2010 | 2002 Isuzu Trooper

1 Answer

1993 izuzu bighorn hard to start then dies like no petrol, when it does start blows black smoke like running rich ?

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1 Answer

Trooper 2002 rough idle

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Sep 12, 2009 | 2002 Isuzu Trooper

1 Answer

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Apr 13, 2009 | 2000 Isuzu Trooper

1 Answer

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A worn engine with blow-by produces a distinctly blueish smoke. You could have computer, spark plug, carburation problems; any or all of these.  
Some makers warn against using steam cleaning on modern engines because some of the sensors could get wet inside and cause all kinds of malfunctions. The product 'Gunk' will remove a lot but it makes sense to remove any really heavy deposits by scraping first.  

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1 Answer

Large amount of white smoke on first start of the day

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Nov 12, 2008 | 1999 Isuzu Trooper

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