65 Mustang 289 Smoking - Page 2 - Ford Mustang Forum
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post #16 of 19 (permalink) Old 12-25-2019 Thread Starter
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Appreciate the response and info . Sorry I forgot to answer your one question from earlier but not burning oil and he did find oil present on the plugs. Guess I'm at a point as to whether to rebuild this one or maybe yank it and drop a 302 in it. If I rebuild it I'm afraid the block might be in bad shape with all the overheating issue I've been having. Thanks and Merry Christmas to everyone!

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post #17 of 19 (permalink) Old 12-25-2019 Thread Starter
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Sorry not sure if this went thru earlier but good info and appreciate the response. In answer to your earlier question it's not burning oil and he did find oil on the plus when he pulled them. Not sure what to do at this point on whether it's worth rebuilding it or just dropping maybe a 302 in it. With all the overheating issues I'm not sure what shape the block is in. Thanks and Merry Christmas to everyone.

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If it's oil on the *outside* of the plugs, I'm thinking the valve covers are just leaking. If it's on the inside, then yes, your engine is burning oil. It can't get into the cylinders through the heads very easy unless your valve seals are shot, and hopefully your mechanic would've caught that. Otherwise it's probably a ring issue - which would cause compression problems.


But all that aside: in order of likeliness, overheating is 1) improper timing, 2) radiator/cooling fan/shroud/thermostat issues, 3) carburetor problems, or 4) block issues. The first one you'd best check is timing, because that one's free, and just takes a bit of work.

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post #19 of 19 (permalink) Old 12-25-2019 Thread Starter
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Oil was on the threads . We will work on the timing issues but we really have exhausted the overheating issue by replacing every part that might have caused an issue. radiator, thermostat, water pump, fan and fan shroud. Also replaced the carb so guess we address the block issue once we get past the timing. Thanks.
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