I'm stuck. Have a 50hp VRO Evinrude that surges at about 3000 to 3500 rpm (half throttle). It will start to cut out then pick back up, almost as if it is starved for fuel.
Took it to a local shop, had them rebuild the carbs, put in a new pick-up in the gas tank and new fuel line. Didn't help, so we replaced the VRO fuel pump. They said they put it in the water and ran it twice to test everything.
No difference.
There is a random chirp of the alarm. Thought it might be overheating, but it's pumping water just fine and can idle or run at 2000 rpm with no issues.
Check the oil tank cap for a plugged or stuck breather, it's seems ok.
Have spent close to $2,800 trying to get this figured out and I am reluctant to take it back to the shop for another big bill.
If I disengage the gears and give it WOT it will rev up just fine. It only surges under a load.
Took it to a local shop, had them rebuild the carbs, put in a new pick-up in the gas tank and new fuel line. Didn't help, so we replaced the VRO fuel pump. They said they put it in the water and ran it twice to test everything.
No difference.
There is a random chirp of the alarm. Thought it might be overheating, but it's pumping water just fine and can idle or run at 2000 rpm with no issues.
Check the oil tank cap for a plugged or stuck breather, it's seems ok.
Have spent close to $2,800 trying to get this figured out and I am reluctant to take it back to the shop for another big bill.
If I disengage the gears and give it WOT it will rev up just fine. It only surges under a load.