Question about 1994 Isuzu Trooper

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94 trooper wont start

Got a 94 trooper will only start and run n starting fluid. but have to pump it alot. Have changed the fuel pump the filter have checked the pressure in the rail and have cchecked the valves.... Any ideas

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  • Cammy Cullen
    Cammy Cullen Jan 01, 2009

    its gas

  • Cammy Cullen
    Cammy Cullen Jan 02, 2009

    done all those things. will start and it runs bad and it pops through the intake. any ideas

  • Colin Stickland
    Colin Stickland May 11, 2010

    diesel or petrol??

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  • Isuzu Master
  • 21,949 Answers

Petrol?? hmm thinking about this ----if your sure that it runs on easy start then electrics ok---then it must be fuel ,right thats eliminated one thing-----now new pump and filter fitted ??is pump giving the right pressure ??was test ok.if so then ------if right pressure then its a control fault-----if not right pressure then its either pump or or non return/pressure retention valve fault.----silly question ???did you check the thin vacumn pipe that connects to the valve on the end of the common rail ,thats the bar/pipe that connects to the injectors.if this is split or porous then this will throw up the same fault.Check above out ,but without a hands on approach iam at a loss but i will think about this later as i have work in yard to do ,building an ice cream van thats demountable because of the spanish paperwork of construction and use of a vehicle.This is a silly problem as the vehicle is too old to use fancy electronics ,try looking at the thin plastic pipes and make another posting

Posted on Jan 02, 2009

  • Colin Stickland
    Colin Stickland Jan 03, 2009

    popping through valves is either bent valves caused by a cam belt breaking,weak mixture ,timing retarded or diesel in petrol ???If i had the dammed thing in front me i could sort it,no problem their .But with a big puddle between me and you,i cant exactly drive round to your place for a coffee and quick diagnosis and kick it up the exhaust pipe into touch.Sorry to admit defeat here but call a local mobile mechanic out to have a look as its something stupìd iam sure,and hopefully he can put his finger on it straight away.

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