Mercruiser 6.2 liter Exhaust Gasket

Rhale · June 17, 2019

Out on the water this weekend and stopped to swap riders. Stared boat up again and had a load tapping sound. Seemed to run fine (good temp, oil pressure, not miss firing) but definitely noisy. After some searching on here, it appears it may be the exhaust manifold gaskets. I have owned this boat for 5 years and it has 430 hrs on it (2006 Enzo). Seems that this was a common issue on the 5.7 liter and usually happened early on. Any others have this issue late in the game or just a common failure part?

superdtf · June 18, 2019

I blew out both head gaskets in the first 25 hours... not torqued correctly.

However, after 400 hours, I'm going to guess that it was something else... and no, not super common, but not shocking either.

Rhale · June 26, 2019

Well, a few too many hours on saturday pulling it apart, repainted and installed new riser gaskets/manifold gaskets and she runs perfect!

superdtf · July 1, 2019

On 6/25/2019 at 6:17 PM, Rhale said:

Well, a few too many hours on saturday pulling it apart, repainted and installed new riser gaskets/manifold gaskets and she runs perfect!

Nice