Hard to start

Discussion in 'Volvo 940' started by LizaDave, Aug 9, 2023.

  1. LizaDave


    Aug 5, 2023
    Likes Received:

    Shortly after fueling up the 940, the car started slightly mis firing, once I stopped it and tried to restart it was very difficult to get running.
    It would crank and not fire, but once the key was released from crank to just ignition on the engine would start firing and eventually if trying to start often enough it would start and run OK,
    I have replaced the knock sensor but that made no change,
    I found several leaks on the inlet manifold and cured them, but no change
    I am getting spark to all spark plugs, but the timing appears to be 10 degrees retarded for some reason.
    Any Ideas to help?
    LizaDave, Aug 9, 2023
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