5.0 mercruiser risers

[jbenckert]

I have a 2000 mercruiser. I guess, because I did not own it since new, it has about 400 hrs on it. How often should the risers be replaced?

 

[Haut Medoc]

Re: 5.0 mercruiser risers

I would say they are due, especially in salt water use.....​

 

[Haut Medoc]

Re: 5.0 mercruiser risers

Manifolds too, if you are not FWC.......​

 

[Don S]

Re: 5.0 mercruiser risers

If it was me, I would pull the risers and inspect them for clogging and inspect the gasket surface of both manifolds and risers.