locating a ignition miss in the engine

Discussion in 'Engine: Repairs and Modifications & generally corv' started by Grumpy, Jun 9, 2018.

  1. Grumpy

    Grumpy The Grumpy Grease Monkey Staff Member



    the idea of using a infra-red temp gun to locate a mis-fire cylinder is useful and valid, a mis-firing cylinder will tend to run cooler, as less hot exhaust gas flow will result, check the cam lift as a worn cam lobe might be the cause.
    Id check the carb float levels and fuel pressure was consistent and replace the fuel and air filter, distributor rotor and cap,
    Id also suggest a basic tune-up and use of a multi meter to verify the ignition wires condition.
    if you post clear color pictures of the labeled by cylinder number spark plugs it could in many cases provide valid useful related info. as always you'll be better off dealing in facts and you get those through isolate and test procedures.
    Id suggest a compression test and adjusting the rockers/and looking for vacuum leaks.
    obviously check your ignition timing and advance curve with a tach and a timing gun, to verify what your dealing with

    Ill post a few related links
    [​IMG]
    http://www.testequipmentdepot.com/e...1100200223789&utm_content=All Extech Products
    INFRARED TEMP GUN


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    Last edited: Jun 9, 2018

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