12 hp Briggs i/c a 1985 model is knocking

Well remember why i scraped the Murrat? well it had a unexplained knocking so i shut it down. I discovered the problem . it turned out to be the Link counterweight had broke. I was lucky enough to catch it before it totally damage the block. thank goodness i had another Link counterweight from another motor to put it back in.

Fixed it and it is still knocking badly!

Weird... What kind of motor is it? My 12HP briggs I/C has a distinct knock especially at low RPM but runs fine... I wonder what it is. I've also heard a couple other good working Briggs with the same noise.

Its a 12 horse Briggs i/c a 1985 model. i still yet gotta take it back apart to find out hat that noise is.

Hmm.. Mine's a 94... I have a 2000 13.5 I/C Gold in my mowing mower that also shares the same noise but at higher RPM. Perfect motor, never been abused... And I worked on an 85 or 86 12HP that was REALLY bad but ran fine. Never opened up either one tho... Let us know what you find out anyways!

startin to sound like its just a briggs thing lol just like chevy trucks with there lifters aha runs mint just a slight tick

Ford Boi wrote:

Hmm.. Mine's a 94... I have a 2000 13.5 I/C Gold in my mowing mower that also shares the same noise but at higher RPM. Perfect motor, never been abused... And I worked on an 85 or 86 12HP that was REALLY bad but ran fine. Never opened up either one tho... Let us know what you find out anyways!

I have a vid coming up on youtube ( currently uploading slowly) and you can hear it.

Fixed the motor and on the first start k-blammo a huge hole in the back of the block.