BillWilliams
Petty Officer 3rd Class
- Joined
- May 23, 2021
- Messages
- 76
We have a 1999 MerCruiser 310 with a Bravo 3 serial number OL342220.
The engine has suddenly started "surging" with fluctuations of 100 to 200 RPM. It's worst when cold and seems to settle down at higher RPM (over 3000) once the engine warms up; however, it will still do it at lower RPM and especially during a hole shot. It's definitely hurting the acceleration.
I will admit we purchased this boat last summer and I have yet to do a tune up on it and plan to at least put some spark plugs in it to see if that helps.
I also plan on running some fuel injector cleaner through it.
Any other ideas I should be considering?
Thank you
The engine has suddenly started "surging" with fluctuations of 100 to 200 RPM. It's worst when cold and seems to settle down at higher RPM (over 3000) once the engine warms up; however, it will still do it at lower RPM and especially during a hole shot. It's definitely hurting the acceleration.
I will admit we purchased this boat last summer and I have yet to do a tune up on it and plan to at least put some spark plugs in it to see if that helps.
I also plan on running some fuel injector cleaner through it.
Any other ideas I should be considering?
Thank you