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Old 09-20-2010
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knocking noise

i have a 1991 ford ranger with the 2.3l with 8 spark plugs recently iv been hearing a knocking noise when the truck is going up hill at a low rpm or when the truck is pulling a my jet ski. any ideas on what it could be?
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Old 09-20-2010
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Spark knock / Detonation.
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Old 09-20-2010
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^that could be...or the motor could be getting sloppy
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Old 09-21-2010
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Quote:
Originally Posted by djfllmn View Post
^that could be...or the motor could be getting sloppy
what do you mean???
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Old 09-21-2010
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He is talking about the rod and main bearings inside the engine. Now as you only hear this under load i can say that it is NOT the rod/mains going out. Run some seafoam through your brake booster vacume line and see if that helps.
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