1976 Glastron Mercruiser 120 misses under heavy load

I

IaBoaterBoy

Recruit
Joined
Sep 25, 2012
Messages
1
I have a 1976 Glastron Mercruiser 120 that misses at WOT or heavy load. I have replaced plugs, wires, points, condenser, distributor, fuel filter, coil, and fuel pump, and it is still doing it. Carb is what a couple years old, but low low hours. Took top off, everything is clean. Ran Seafoam through it. The boat was shredded for a few years before I bought it this season. Other then the miss, runs excellent. Any ideas?
 
achris

achris

More fish than mountain goat
Joined
May 19, 2004
Messages
27,468
Re: 1976 Glastron Mercruiser 120 misses under heavy load

First off, what compressions do you have? Next hook up a timing light and run the boat until the problem occurs, check the timing light to see if the problem is fuel or spark...

Chris...

Welcome to iBoats... Would have been an interesting project to restore a 'shredded' boat.. :D:D
 
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