1. #1
    MCluvsacj5's Avatar
    MCluvsacj5 is offline Junior Member
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    stalling out when warmed up

    My cj 5 starts great when cold but when warmed up to running temp stalls out, let it sit for a few (15) minutes will fire right up again.
    It's a 304 with edelbrock hi rise, 625 carter afb (rebuilt last year) & a healthy cam. I have added a 1" phenolic spacer under carb, new ignition switch, new plugs & wires, installed a new module in the DUI distributor, even new electric fuel pump. Can't drive 2 miles w/o
    it stalling out. Can someone please help ?
    No road ? No problem !

  2. #2
    xt master's Avatar
    xt master is offline Senior Member
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    Re: stalling out when warmed up

    Have you checked your oil and radiator fluid to make sure there not mixed.could be a bad head gasket that starts to warp when warmed up.

    Jeep! not just a vehicle a way of life.

  3. #3
    TerryMason's Avatar
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    Re: stalling out when warmed up

    Clogged up cat?

  4. #4
    MCluvsacj5's Avatar
    MCluvsacj5 is offline Junior Member
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    Re: stalling out when warmed up

    Quote Originally Posted by xt master View Post
    Have you checked your oil and radiator fluid to make sure there not mixed.could be a bad head gasket that starts to warp when warmed up.

    Jeep! not just a vehicle a way of life.
    Yes I have checked those too, oil is clean as is the coolant. Could it be vapor lock, how do I check that ?
    No road ? No problem !

  5. #5
    MCluvsacj5's Avatar
    MCluvsacj5 is offline Junior Member
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    Re: stalling out when warmed up

    Quote Originally Posted by TerryMason View Post
    Clogged up cat?
    It's a 1974 so no cat, only headers & loud mufflers. Also no smog equipment.
    No road ? No problem !

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    JPNinPA's Avatar
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    stalling out when warmed up

    Does your fuel line run over an area that heats up. When the engine heats up it could vapor lock. You could temporarily use tinfoil as a heat shield. Or Reroute the line.

    Is the fuel pressure constant through the cool hot period?
    Regards,
    JPNinPA

    Sent using TapTalk
    "Never look down on anybody unless you're helping him up" - Jesse Jackson

  7. #7
    MCluvsacj5's Avatar
    MCluvsacj5 is offline Junior Member
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    Re: stalling out when warmed up

    Quote Originally Posted by JPNinPA View Post
    Does your fuel line run over an area that heats up. When the engine heats up it could vapor lock. You could temporarily use tinfoil as a heat shield. Or Reroute the line.

    Is the fuel pressure constant through the cool hot period?
    Regards,
    JPNinPA

    Sent using TapTalk
    Sometimes it seems like it runs out of gas, I will investigate that next. Thanks for all the responses
    I will keep you guys informed with my progress
    maybe this will help someone else with similar problem.
    No road ? No problem !

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