75 help

Discussion in '1974 - 1978 Mustang II Talk & Tech' started by 75_2+2, Jul 16, 2009.


  1. 78CobraII

    78CobraII Moderator

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    I may have missed it...have you been through the fuel system yet? If the fuel sock in the tank is clogged, you might get enough fuel for low rpm, but not high.

    Is there an in-line fuel filter attached to the carb? I would check it.

    The hot water line to the carb can be plugged if you are in a warm climate.
    #61
  2. cobraii351

    cobraii351 Founding Member

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    Sorry I thought for some reason that this was a v8 car. Please excuse.

    With that in mind. have you pulled the valve cover off to check the condition of the cam and followers? It's possible that even a low mileage 2.3 could have eaten some of the lobes down. Not all that uncommon with the earlier OHC motors.

    Tim
    #62
  3. COBRAIIW

    COBRAIIW New Member

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    To check for jumped timing belt, remove valve cover and number one spark plug.
    Rotate engine by hand until the piston is at top dead center. you can use a flashlight to see it, or a straight coat hanger to feel it.
    At this point both of the number one rocker arms should be unloaded, meaning they wiggle sideways a little and the pushrods spin freely.
    This tells you the valves are both closed.
    If you don't have this, you have jumped a tooth or two.
    #63
  4. Wart

    Wart I'm Mad as HELL and I'M not Gonna Take it ANYMORE! Founding Member

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    80K miles is just about the right time for the belt to jump or break.

    As time passes people tend to forget how things WERE and start thinking how things are now is as they have always been.

    Back in The Day when a 2.3 reached 60k miles it was time to change the belt. The farther past 60k the engine went without changing the belt was akin to putting more bullets in the cylinder to play Russian Roulette. Eventually there will be a 100% probability of 'fail'.

    Bogging could be caused by a malfunctioning accelerator pump (missing check ball), but if the engine doesn't crap out when the throttle is opened eventually fuel flow will catch up with air flow and hte should run like it's suppose to.

    If the engine doesn't want to run above 30~40 mph under load (mixed terms?) I would wonder if the secondary is opening. Though an engine shouldn't need the secondaries to make it past 40.

    Jumped timing ... those of us with V-8s who didn't gtet the plastic grar out of there in time know what jumped timing is like. :( I've seen Fords (and other engines) with jumped timing. Some sound like they want to start, others will start but won't make it above an idle. Some will start and run, mayhaps even make it up the road, some , not very well though.

    Then there IS that cam issue .... Yeah, Ford did have a .... batch? ... of crappy cams back then ... Thanks for reminding me of this. :rlaugh:

    Yep, lobes sure could be burned off a '70s Ford cam. Why not? They were burned off in the '70s. :rlaugh:

    A humorous piece of Ford Folklore.
    #64

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