Jayflash7
Cadet
- Joined
- Jul 7, 2016
- Messages
- 15
So this is my first post on this site so bare with me. I have a 1979 100 hp evinrude i bought 2 weeks ago and took the boat out and it ran perfect. It planed out and got up to about 26+ mph on a 1979 19 ft manatee. No problems. The next day i took it out and flew all over the bay. I was then heading back to the boat ramp at wot and out of no where it lost speed came off of plane and stayed at that speed. I brought the throttle down and tried to get back up but it would just speed up to where it was right before plane. I would say about 15 mph tops. I tried pumping the primer bulb at wot and no change. Put it on the trailer and brought it home. The next day i proceded to purchase new spark plugs and check if all were firing and they were. I then took her out again and proceded to open her up wot and she took about 15 seconds to come up on plane but still not at 26mph . Then after a little bit she bogged down and came back to 15 mph and stayed there. The boat has been sitting for 2 years atleast. Shes starts like a champ and idles fine and at lower throttle you would think shes a brand new motor but once i try to open her up she tops out at 15mph and doesnt plane. Any info would be helpful. Thanks.