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2006 lexus gs300 3.0L thats been non- op. For 4 months . it will crank but wont start. Ive added , new plugs. New gas cap .,a new MAF sensort cleaned the throttle body and start. ,

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Do you have fuel pressure

Posted on May 11, 2017

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  • Ruben Torres
    Ruben Torres May 11, 2017

    How can i tell ? It appears the prssur. Reg. Is not pressurized.I did disconnect the hose line that comes from the PR to see if fuel would blast out.... Nothing?

  • Anthony Zullo
    Anthony Zullo May 12, 2017

    The access to the fuel pump is behind the rear seat most likely have a bad fuel pump in your car , need to gain access to the pump I would pull the back seat check for power and ground at the pump if you have that replace the pump

  • Anthony Zullo
    Anthony Zullo May 15, 2017

    Need to see if you have power and ground at the fuel pump when you turn the key on



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ok, i tell you 3 possible causes.
check maf sensor connection , check fuel pressure regulator (max press fuel in rail 40 psi) , check engine compression (min 95 psi ) if less this cause spark plugs wet and not start

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