bill chisholm
Cadet
- Joined
- Jul 1, 2008
- Messages
- 23
Sorry about the long post but this is really weird.
Any ideas.
Last spring I put in new manifolds and kept my older risers.
Ran it about 60 hours last summer and fall and it ran, cooled, started, like a new boat. Absolutley not one problem.
Last Friday I put the 24' Tolley in the water after storing it for the winter. After a new battery it fired up and idled for about an hour while I cleaned it up. I then ran about 10 miles at 2000 rpms and a couple of miles at wide open and then low speed back to the dock, about 30 minutes, where it died. After lots of cranking it started and idled fine for about 15 minutes. Then the next day it wouldn't start and I cranked and cranked and cranked, finally I found a rusted wire end to the positive coil terminal and fixed it and now there is 12v to the coil. I turn the key and the motor is seized, hydro locked. I pull the back plugs and the cylinder is FULL of fresh water straight from the river. I pulled all of the plugs and there is a LOT of fresh water, no anitfreeze, in all 8 cylinders, both banks. Some of the cylinders are so full that when I pulled the plugs water runs out of the plug holes.
I did WD 40d the cylinder holes and it turns over fine with no plugs in it. I think I have saved the engine.
My question is, how can both banks fill, and I mean FILL, with water at exactly the same time. Would cranking on the starter somehow fill the mainifolds and backfeed water through the riser into the block? It's hard for me to believe that both risers failed at exactly the same time after it ran perfect for a couple of hours. It is just like someone just pumped the engine FULL of water.
This is a 350 GM OMC Stringer 1980 Fresh water cooling, mechanical shift.
Any ideas or have you ever heard of this with a Stringer
Any ideas.
Last spring I put in new manifolds and kept my older risers.
Ran it about 60 hours last summer and fall and it ran, cooled, started, like a new boat. Absolutley not one problem.
Last Friday I put the 24' Tolley in the water after storing it for the winter. After a new battery it fired up and idled for about an hour while I cleaned it up. I then ran about 10 miles at 2000 rpms and a couple of miles at wide open and then low speed back to the dock, about 30 minutes, where it died. After lots of cranking it started and idled fine for about 15 minutes. Then the next day it wouldn't start and I cranked and cranked and cranked, finally I found a rusted wire end to the positive coil terminal and fixed it and now there is 12v to the coil. I turn the key and the motor is seized, hydro locked. I pull the back plugs and the cylinder is FULL of fresh water straight from the river. I pulled all of the plugs and there is a LOT of fresh water, no anitfreeze, in all 8 cylinders, both banks. Some of the cylinders are so full that when I pulled the plugs water runs out of the plug holes.
I did WD 40d the cylinder holes and it turns over fine with no plugs in it. I think I have saved the engine.
My question is, how can both banks fill, and I mean FILL, with water at exactly the same time. Would cranking on the starter somehow fill the mainifolds and backfeed water through the riser into the block? It's hard for me to believe that both risers failed at exactly the same time after it ran perfect for a couple of hours. It is just like someone just pumped the engine FULL of water.
This is a 350 GM OMC Stringer 1980 Fresh water cooling, mechanical shift.
Any ideas or have you ever heard of this with a Stringer