krpsu20002000
New member
"2003 mag 350 - fresh water co
"2003 mag 350 - fresh water cooled - bravo 3
150 hours - starbord engine
When I crank the engine - after 5 seconds of crankning the engine makes a loud "clunking noise" (like a sudden stop to the engine) - like a cylinder is filled with fluid and cant compress - 1/2 the time the boat will start immediately after this sound, 1/2 the time it wont. When it does start it idles at 750 rpm but seems to have a missfire (the idle is smooth on the tac but you can feel the misfire if you hold the engine). The boat was scanned and no codes were found. All the fluids were sent to a lab for diag (oil, drive lube, etc.) and no problems found (no water in oil, etc..) Oil level is good, drive lube level is good. I tried running the boat on different gas hoping it was water in the gas - no change - the port engine runs good. The water pump impellor was recently changed - When it does run - you can rev it with no problems (over 3000rpm easily) other then the misfire to about 2000 rpm - after that you dont notice it - when it is in gear you can go about 5mph with no problems - if you try to accelerate you get the enging warning noise and no power from the one engine (engine automatically reduces rpm)
any help is greatly appreciated
keith
brick nj [email protected]"
"2003 mag 350 - fresh water cooled - bravo 3
150 hours - starbord engine
When I crank the engine - after 5 seconds of crankning the engine makes a loud "clunking noise" (like a sudden stop to the engine) - like a cylinder is filled with fluid and cant compress - 1/2 the time the boat will start immediately after this sound, 1/2 the time it wont. When it does start it idles at 750 rpm but seems to have a missfire (the idle is smooth on the tac but you can feel the misfire if you hold the engine). The boat was scanned and no codes were found. All the fluids were sent to a lab for diag (oil, drive lube, etc.) and no problems found (no water in oil, etc..) Oil level is good, drive lube level is good. I tried running the boat on different gas hoping it was water in the gas - no change - the port engine runs good. The water pump impellor was recently changed - When it does run - you can rev it with no problems (over 3000rpm easily) other then the misfire to about 2000 rpm - after that you dont notice it - when it is in gear you can go about 5mph with no problems - if you try to accelerate you get the enging warning noise and no power from the one engine (engine automatically reduces rpm)
any help is greatly appreciated
keith
brick nj [email protected]"