Mercruiser 3.7L - Rattle/Knock over 2000rpm & wont go over 3000rpm - need a guru that knows these!

[timguy]

Re: Mercruiser 3.7L - Rattle/Knock over 2000rpm & wont go over 3000rpm - need a guru that knows thes

Yes I had a 454 destroyed by rotten ethanol fuel. Sold it with the knock in it. The guy was gonna build a street rod.