"Hi, I have a 1988 Sea Arrow b
"Hi, I have a 1988 Sea Arrow boat that came with a 200 h.p. GM 5.0 engine. The engine was changed to a 5.7 engine before I purchased it. It has always had this problem from the day I got it. The boat is a little doggy taking off & when you get up on plane & up to about 30 mph it starts poping back thru the carb & basicly just falls on its face. The boat has been thru 3 boat shops & no one can fix it. I purchased some service manuals & this is what I have came up with. It would not pass a cylinder leak down test so I removed the heads & had them all re-worked. The ignition module would not corectly control the timing so I removed the compleate Merc system & instaled a MSD marine system. I have done some reading on the net & found some people saying to run a heavy wire from the battery to the coil & disconect the one from the ignition switch. Also found people saying to disconect the shift assist & the tach. I tried all of the sugestions & nothing has changed? Any ideas??? Thanks, Rusty"
"Hi, I have a 1988 Sea Arrow boat that came with a 200 h.p. GM 5.0 engine. The engine was changed to a 5.7 engine before I purchased it. It has always had this problem from the day I got it. The boat is a little doggy taking off & when you get up on plane & up to about 30 mph it starts poping back thru the carb & basicly just falls on its face. The boat has been thru 3 boat shops & no one can fix it. I purchased some service manuals & this is what I have came up with. It would not pass a cylinder leak down test so I removed the heads & had them all re-worked. The ignition module would not corectly control the timing so I removed the compleate Merc system & instaled a MSD marine system. I have done some reading on the net & found some people saying to run a heavy wire from the battery to the coil & disconect the one from the ignition switch. Also found people saying to disconect the shift assist & the tach. I tried all of the sugestions & nothing has changed? Any ideas??? Thanks, Rusty"