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  1. Ksch439928

    What THE ? 3.0 Dies After 20 Minutes

    I have a 1988 Four Winns 160 Freedom with a 3.0 L OMC Sterndrive . I myself am a mechanic but before I continue to diagnose this issue please let me know if you have dealt with this. After about 20 minutes of run time the coil is being robbed of voltage. I can connect a direct jumper wire from...
  2. Ksch439928

    1988 OMC 3.0 Litre Ignition -We are on to something

    I FINALLY got back to doing more diagnostics on my OMC engine that would run GOOD for about 20 minutes to 1/2 hour then start to mis-fire & stall. The problem lies between the alternator / regulator and the 3- wires " 1- resistor wire - connected together going to the coil. I can connect to...
  3. Ksch439928

    WhatmeWorry

    I have a 1988 OMC 3.0 Liter that has a mystery illness ! I have seen this situation in older posts ,so it must be "somewhat" common. Here is the symptoms. the engine will start and run GOOD for about twenty minutes to one half hour. About ten minutes after it comes up to operating temp it...
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