Injector help

Discussion in 'Volvo Forum' started by bob32racing, Mar 2, 2017.

  1. Mar 2, 2017 #1
    bob32racing

    bob32racing Bobtail Member

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    Feb 23, 2017
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    I suspect a bad injector. I did a temp gun test on the manifold. The front cylinder was 200 degrees warmer than the rest. Ive heard of dead injectors being colder. Any reason why one hole is 200degrees hotter? Stuck injector?
     
    bob32racing, Mar 2, 2017
    bob32racing, Mar 2, 2017
    #1
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  3. Mar 2, 2017 #2
    Superhauler

    Superhauler TEACHER OF MEN

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    I dont trust a heat check of manifold to diagnose an injector. The best way is do a cut out test on individual injectors while the engine is working, under load, pulling, etc. And read the flow results.
     
    Superhauler, Mar 2, 2017
    Superhauler, Mar 2, 2017
    #2
  4. Mar 2, 2017 #4
    bob32racing

    bob32racing Bobtail Member

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    I had pulled the connector while running, the engine smoothed out. Plug that injector back in and it misses. This only happens when the engines warm. Still i should not be 200 degrees hotter than any other cylinder.
     
    bob32racing, Mar 2, 2017
    bob32racing, Mar 2, 2017
    #4
    KB3MMX Thanks this.
  5. Mar 2, 2017 #4
    little cat 500

    little cat 500 Road Train Member

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    leaking injector
     
    little cat 500, Mar 2, 2017
    little cat 500, Mar 2, 2017
    #4
  6. Mar 2, 2017 #6
    bob32racing

    bob32racing Bobtail Member

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    I ordered a new one today. Hopefully it fixes the problem.
     
    bob32racing, Mar 2, 2017
    bob32racing, Mar 2, 2017
    #6
  7. Mar 2, 2017 #6
    sbaumann14

    sbaumann14 Road Train Member

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    VCAD on a cold engine. do a cylinder balancing test
     
    sbaumann14, Mar 2, 2017
    sbaumann14, Mar 2, 2017
    #6
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