What would make a knocking sound in my engine and what kind of problem could it be?

Asked by EagleScout403 Jul 26, 2015 at 03:12 PM about the 1997 Chevrolet Blazer LT 4-Door RWD

Question type: Maintenance & Repair

I have a 1997 Chevy blazer.  The engine started running hard and making a loud  knocking sound.

3 Answers

FordNut answered 9 years ago

Loud, unfortunately, could be a thrown rod. Connecting rod from piston to crankshaft breaks, wrist pin breaks, cap on rod comes off from crank. Serious.

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FordNut answered 9 years ago

Hi ya bud. He said running hard...I took that to mean running badly...?

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