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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Posted on Jan 02, 2017

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1 Answer

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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I just bought an 2003 Isuzu Trooper 4jx1 model last month. Lately I started to experience an engine shut-down when ever I try to run it on cold engine. I also notice that it is hard to start when the...


indicates a fuel supply and pressure problem
check and bleed the system
have the injectors professionally overhauled by a diesel specialist shop

Jul 21, 2017 | 1999 Isuzu Trooper

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I have a 2002 isuzu trooper (diesel) which is has its oil newly changed. last year, i complained to the dealer that it had no power and thick black smoke was emitting from it. then they replaced the...


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.

Feb 24, 2011 | 2002 Isuzu Trooper

1 Answer

Isuzu trooper 2003, skyroof version, 4jx engine. Diesel and oil mixing in engine. It might be the electronic fuel injector o ring. Need help badly. Isuzu alabang is giving me some pain. Big Black smoke...


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?


Yes you can . Requires some skills but the only bits that dont work after are the speedo and the rev counter .

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 ?


check injectors for leakage when engine off-will have to install fuel press gauge run engine and check press ,turn off engine and whatch gauge -see how long it takes for press to drop,will cause hardstart hot engine-but should start better cold

Sep 19, 2009 | 1993 Isuzu Trooper

1 Answer

Trooper 2002 rough idle


Check all your vacuum lines by wiggling them around when it's running, and see if the "hiss" changes at all. Instead of the smoke wand, use soapy water. Just dump it on your intake, and if it's leaking it will bubble like crazy. Smoke wands are for locating leaks in houses, not engines.

Sep 12, 2009 | 2002 Isuzu Trooper

1 Answer

4x4 stick stuck , wont move


There is a small green 4x4 light that comes on when you have the key in at the heater plug position before starting if its not on then a fuse has blown .

Apr 13, 2009 | 2000 Isuzu Trooper

1 Answer

Iv got a 1991 2,8 trooper the motor looks old what di i need to clean or do to get its going nice do i need to clean turbo or what and it smokes black smoke


Black smoke is normally a sign of very poor combustion; in other words, it is unburned gasoline.
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.  

Mar 22, 2009 | 1990 Isuzu Trooper

1 Answer

Large amount of white smoke on first start of the day


Have you had the injector recall check carried out? There is a problem with these injectors and this produces the symptoms you are describing. I suggest that you contact Isuzu direct for help. They have been very helpful in the case of my trooper

Nov 12, 2008 | 1999 Isuzu Trooper

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