Question about 1986 Toyota Pickup 4WD

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1986 toyota 4runner fuel delivery

I have a 1986 4runner with a 22re engine. The engine has just been rebuilt. The engine will not start, it has good spark, good compression and good fuel pressure. If i squirt fuel into the intake it will run until that is used up but something it prohibiting the injectors from firing. I have replaced the engine computer with a unit from a running vehicle.

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  • yota lover May 08, 2009

    i have the exact same problem. this is the 3rd engine i have put in my 86 4runner and it wont start. i read your comments and changed the distributor,o2 sensor, fuelpressure regulator, fuel pressure damper (which now laeks) and made sure the air box wes hooked up, but after that i sprayed starting fluid in it and once it burned off it died. if it keeps this up it'll be full of .45 cal holes.

  • Toyota Guy
    Toyota Guy May 11, 2010

    The 22re uses the pickup sensor inside the distrubtor to tell the engine it is rotating. If the air gap is incorrect it will not send the proper voltage to the ecm. The ecm uses this signal and transmit pulsed power to the in jectors and also power to the igniter controler.

    the resistance across this sensor is 170-240 ohms. Also make sure your engine is in proper timing. Make sure that your air flow meter or air box connector is pluged in. The air box controls fuel pressure.

    Also check your timing chain. Pull the valve cover off and make sure the timing chain is not damaged or streched. Some of the new chains are make in india and tend to be very weak. I had on brake only 1 hour of running. then i put in a lcengining dual chain on my 22re and have gone 55,000 mile no problem.

    is your oxygen sensor hooked up properly i know it cause the engine to increase and decrease pulse rate of the injectors.

    I hope this points you in the right direction. Chances are your orginial ecm is fine.

  • Dave  C
    Dave C May 11, 2010

    You must make sure that the air intake hose is connected and sealed to the airflow meter or the computer will not know air is entering the engine and the injectors will not fire. This is an amazingly common problem that catches the best of us on these old bosch airflow systems.

  • Roberta Smith
    Roberta Smith May 11, 2010

    did that other vehicle have a 22re motor as well... same year... also check all your connections it sounds like you don't have something hooked up... especially check the crank and camshaft position sensors (if equipped)



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  • 15 Answers

Check the fuel pressure regulator

Posted on Aug 23, 2009


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