Thread: Pulse pump ?

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  1. 01-09-2018, 10:37 PM #1
    kerr
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    Pulse pump ?

    OT998642 on a 300x can the pulse pump go bad and put fuel in the engine and cause rich idle after motor runs for few minutes
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  2. Gamblinman
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    #2 01-10-2018, 08:05 AM
    Just the opposite...should be running OUT of fuel if the pulse pump is bad.

    Do you have an external electric fuel pump by chance?

    When was the last time the injectors were cleaned and flow tested?
    "Better to remain silent and be thought a fool than to speak out and remove all doubt."
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  3. MH401
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    #3 01-10-2018, 11:20 AM
    I do believe if it's bad or defective it can dump fuel into crank case since the pulse pump runs of crank case pressure
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  4. Rickster
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    #4 01-10-2018, 05:16 PM
    Pulse pump can be a leak point as well as the fuel pressure regulator diaphragm or a sticking injector.
    2006 Gambler 2200DC/250XS
    Rick Hallenbeck
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