Mercruiser Woes-What Next?

[Islandtrader]

I tend to agree with the other posts. From experience and from all the old salts here in FL. Manifolds will last six years. Cheap insurance to change after 6 years. 90% of engine failure comes from the manifolds.

If it were mine and $ were a concern here is what I would do. Replace the manifolds and run it to see what gives. If if checks out your good to go. If not then go buy a short or long block take all the stuff off your old block and put it back in the water. In 5 years change the manifolds and keep on going.

Keep us posted on what happens.