Question about 1988 Isuzu Trooper 2 Door

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Valve adjustment specification

I have 88 trooper but i lost the valve adjustment specification

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Shop advised setting echaust valves at +.005 (or.05 -- hmmmmm...; anyway, "half a thousandth of an inch") wider than spec. Gives the valve more time to cool on each stroke.

Posted on Dec 21, 2008

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No compression in any cylinders, could I have in upside down? put head gaskets


Compression can be lost with wrong valve adjustment. I suppose that you tightened the cylinder head according to manufacturer's specifications, but did you re-adjust the valve clearance?

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Can i adjust the valves on a 88 festiva 1.3L


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88 Isuzu Trooper 2 lost power to the pump. Installed a new pump, sock , filter and relay in the fuse panel. Still have no power! Can you help?


I would suspect either a bad plug- in at the pump or a bad power wire. Run a wire from the battery direct to the pump. If it runs, attach the wire under the hood to something that only has power with the key on and put an in-line fuse into it. Hope this helps.

Nov 08, 2011 | 1988 Isuzu Trooper 2 Door

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HOW DO I FIND A REPAIR MANUAL SPECIFICALLY FOR AN 88 ISUZU TROOPER?


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I hope I have given you a few leads for your manual.

Thanks for your question and please come again.

Feb 06, 2011 | 1998 Isuzu Trooper

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What type of oil do i need for a 1996 isuzu trooper?


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Jan 19, 2011 | 1996 Isuzu Trooper

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99 isuzu trooper 3.0D difficult to start any morning when the engine is cold, when it does start it has a rough idle and sometimes cut out difficult to start again. both throttle sensors have been changed...


Engine is difficult to start when cold
  1. Check the battery condition, battery state of charge and starter motor current draw. Replace the battery if marginal and the starter motor if the current draw is beyond specification.
  2. Check the battery cable condition. Clean the battery terminals and replace corroded or damaged cables.
  3. Check the fuel system for proper operation. A fuel pump with insufficient fuel pressure or clogged injectors should be replaced.
  4. Check the engine's tune-up status. Note the tune-up specifications and check for items such as severely worn spark plugs; adjust or replace as needed. On vehicles with manually adjusted valve clearances, check for tight valves and adjust to specification.
  5. Check for a failed coolant temperature sensor, and replace if out of specification.
  6. heck the operation of the engine management systems for fuel and ignition; repair or replace failed components as necessary.
Engine is difficult to start when hot
  1. Check the air filter and air intake system. Replace the air filter if it is dirty or contaminated. Check the fresh air intake system for restrictions or blockage.
  2. Check for loose or deteriorated engine grounds and clean, tighten or replace as needed.
  3. Check for needed maintenance. Inspect tune-up and service related items such as spark plugs and engine oil condition, and check the operation of the engine fuel and ignition management system.

Dec 19, 2010 | 1999 Isuzu Trooper

1 Answer

I have replaced the throttle position sensor, egr valve, o2 sensors, mass air flow sensor, fuel system, and my 99 trooper idles high, and shuts off


Check the Idle accelerator valve located on front side of throttle body, it is either stuck or needs cleaning real bad, this is what controls your idle speed, by letting small amount of air in. It has a plunger on it that moves back and forth slowly to adjust amount of air mixture, it is controlled by computer. Unplug it and just turn on key and check for voltage.This valve gets real gummed up, probably need to take apart throttle body and clean. HUNT

Jul 12, 2009 | 1987 Isuzu Trooper

1 Answer

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If its the 4JX diesel engine the crankshaft position sensor wants an adjustment as its going out of range.

Apr 19, 2009 | 2002 Isuzu Trooper

1 Answer

Plugs with carbon, rich exhaust Trooper


Adjust the valves. .006 for intake, .010 for exhaust makes a huge difference.

Apr 13, 2009 | 1987 Isuzu Trooper

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1988 Isuzu trooper steering column locked... n key's missing :(


sort of a solution. if you can get the ignition to turn to the off position there is a pin under it you can push and pull the whole thing out and start it with a screwdriver. or you can take out one screw from behind the ignition on the little black thing and you can start it with anything. i'm not sure if that will unlock the steering column though. hope this helps

Mar 20, 2009 | 1999 Isuzu Trooper

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