'93 Chevy 1500 Knocking noise?

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Old 04-26-14, 02:58 PM
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Exclamation '93 Chevy 1500 Knocking noise?

So I have this 1993 Chevy 1500 automatic V6 2wd with 164xxx miles that started making a knocking noise. It comes and goes but knocks at idle and increases when I press on the gas? Could that be the connecting rod, bearings, or a piston slap? I've heard that you could use 3 quarts on Havoline oil and some STP with high grade gas and it could do the trick, need a second opinion. Don't want to buy a whole new engine, lol.
 
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Old 04-26-14, 03:05 PM
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Automatic? Check for cracked flywheel.
Check pulley bolts on harmonic balancer.
And, Yes it could be internal damage. Main bearings on crank giving way or a spun rod bearing, cracked piston, bad wrist pin, etc.

RR
 
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