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Weird crank no start when warm situation 200

posted by  jeffj on  Sat Jul 28 12:58 CST 2012
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last visit: Mon Aug 26 06:34 CST 2013
[RELATED]

I have a 92 volvo 240gl and have been having issues here and there with the car not starting especially when really warm (100 degrees plus some days), after being run for awhile or if parked on a slope (seemingly a slope with the front right end on the lowest ground). The car runs perfectly once started and will not experience any issues at all until it is turned off and attempted to be restarted within 30-60 minutes. Generally i can get the car to start after several attempts if the temperatures aren't too extreme otherwise I am relegated to using starter fluid and will get a start after a couple tries. I assume this is a fuel issue and know that the fuel pump under the hood is in working order and feel that if it were the tank pump i would not be getting as good of performance as I have been while driving. Any information or advice would be greatly appreciated.
Thanks,
Jeff








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    Weird crank no start when warm situation 200

    posted by  Budcoldweiser on  Sat Jul 28 13:21 CST 2012
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    last visit: Sat Aug 30 15:03 CST 2014
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    Could be vapor lock. Do you have a fuel pressure gauge? The residual pressure in the system may not be holding. Perhaps a leaky check valve on the fuel pump.
    --
    1966 122s, 1968 142s, 1969 144s, 1979 245dl, 1989 244gl








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      Weird crank no start when warm situation 200

      posted by  jeffj on  Sat Jul 28 13:54 CST 2012
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      last visit: Mon Aug 26 06:34 CST 2013
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      I do not have a fuel pressure gauge, and I've seen enough posts here to think what you're saying sounds about right...is there something i can do short of replacing the fuel pump that would solve the problem? and would the angle the car is parked on also be a symptom of a faulty check valve?








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        Weird crank no start when warm situation 200

        posted by  Budcoldweiser on  Sat Jul 28 14:27 CST 2012
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        last visit: Sat Aug 30 15:03 CST 2014
        [RELATED]

        The check valve can be replaced without replacing the pump.

        http://www.fcpgroton.com/product-exec/product_id/5147/nm/Volvo_240_Fuel_Pump_Check_Valve_1985_1993_Bosch_/category_id/149

        The check valve is relatively cheap, but it would be nice if you could know for sure that it is the problem before going through the trouble. I'm not sure how you could test this without a fuel pressure gauge, though. Maybe someone else has an idea.

        --
        1966 122s, 1968 142s, 1969 144s, 1979 245dl, 1989 244gl








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          Weird crank no start when warm situation 200

          posted by  skiman26 on  Sat Jul 28 19:52 CST 2012
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          last visit: Mon Aug 4 21:08 CST 2014
          [RELATED]

          After a tune up, replacing both fuel pumps, checking a replacing fuses, fuel pump relay, ect. I finally decided to change my coil. It fixed the hot start issue, although it still occurs, but a lot less frequently.






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