Question about 1999 Isuzu Trooper

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When cold in morning starts and runs fine once hot takes bout 25 seconds turning over before starts then has like a diesal knock done non return valve new fuel pipes filter put lift valve

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If its the 3.0 diesel you have a glowplug fault .
May just be the 40 amp one under the hood or one or more glowplugs have burnt out they can be tested in place by using the ohms on a multimeter - O reading duff plug - 0.8 - 1.0 ok.
Also check for 12v on the plugs as the relays can go too .

Posted on Sep 13, 2009

  • Simon
    Simon Sep 14, 2009

    Did I read that wrong or wot !

    Sorry its a hot start fault then its an oil as in wrong grade or rail oil pressure sensor fault ,


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Sounds like poss low fuel pressure, have that tested.

Posted on Sep 11, 2009

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Diesal engin will not start without eather

check the glow plugs circuit to ensure that the pre-combustion chambers are being suficiently heated. also fuel cetane rating must be high enough for cold weather starting. diesel will gel when cold if the cetane rating is low non winter diesel that is. A good fuel stabilizer could help. hope this helps

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