have 98 econoline with the 4.3 v8 overhead cam engine. there is i light knock you can feel all over the engine. i remember reading a bulliten in the motor magazine years ago but was hoping someone here might remember. its not piston slap or rod knock noise . is pretty constant hot or cold. thanks for any help. lucas
4.3 v8 noise
Jul 03, 2006
Last reply: 20 years ago
3 Replies
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Does it change any from cold to hot?
----------------- The SnoMan
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doesnt change hot or cold. you really have to listen to hear it,but you can feel it if you touch any part of the engine.lucas
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found the problem.. it was in the alternator. the rear shaft part of the armature was worn an 1/8 inch so it was loose in the bearing race. the armature was scraping on the feild winding,,still working but scraping. was going to put brgs in till i got it apart,rebuilt alt time..gee... lucas
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