ipukula2000
Recruit
- Joined
- Apr 27, 2014
- Messages
- 3
I have a 2008 50 HP mercury 2-stroke engine. It has had a problem for about a month with starting. I checked compression (each cylinder was 120 psi), installed new plugs (gapped correctly), installed new fuel bulb, new battery, and have removed, installed new fuel filter and gas/water separator and removed and cleaned all three carburetors. I also had the shift and throttle cables replaced by a marine mechanic (the throttle cable was rusting through). The motor now starts great and I took it our yesterday. Everything was great, at full throttle I had the usual 4,500-4,800 rpm with three people on the boat (17' flats boat). After about 5 minutes, however, the rpm suddenly dropped to 2,800 and wouldn't rise above this number the rest of the day. It ran fine at 2,800 rpm. If I put in neutral, the RPMs easily rose to 4,000-5,000 (I didn't push it any higher!). I re-engaged the shift, put in Forward and could still only get 2,800 rpm. This has never happened before. Today I checked in a trash can of water (adding resistance to the prop) and it worked fine, back up to 4,500 rpm near full throttle.
Any ideas?
Any ideas?