302 rattle under load
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Joined: Aug 2001
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From: MCBH Kaneohe Bay, HI
302 rattle under load
My relatively new 302 remanufactured engine has a quiet rattle/knock when its under a load. It dont shake any, just makes the sound. I'll retard the timing a little and see how that helps. The oil pressure hasnt really gone down much. Seems that it does it more when its hot. Almost like it takes a little time, a few seconds, to make the sound after i hit the gas and the truck's accelerating. Like it takes a little while for the oil film to be wiped from a bearing. Someone told me that the distributor might be goin bad and the magnetic pickup might be bad or sumthin on my duraspark 2 distributor.
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Joined: Jun 1999
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From: Durham
302 rattle under load
Let us know what your timing is set at and how much you have to retard it to quit pinging. I was down to 6 degrees BTDC and was still experiencing the ping when the engine was hot and I was pulling a hill or under heavy acceleration. I fought this for almost a year before the distributor finally would quit (usually in the middle of the street someplace)...it was just like someone turned the key off. I stumped my local mechanic and he said it was my aftermarket MSD ignition...but I finally traced it to a bad magnetic pickup in the distributor. I replaced the distributor, reset my timing to 14 BTDC and haven't had a problem...plus the truck runs cooler to boot!!!
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