JohnGordon
Member
- Jul 19, 2010
- 161
- Boat Info
- 1999 330 Sundancer, 7.4MPI, V-Drive, 4.5 Westerbeke, Raymarine A98, Full Camper Canvas, Vitracore-So
- Engines
- 7.4MPI, V-Drive
Bought the boat in 2014 and only ran it during sea trial and winterizing. When we bought the boat I knew there was a problem with the port motor and ended up rebuilding it. During the sea trial and winterizing I seem to remember the starboard motor running very smooth with no issues (of course now I am doubting myself). After rebuilding the port motor and doing everything else the boat needed (a year and a half worth of fixing) ;when I started up the starboard motor I noticed a vibration. The vibration happens at all RPMs regardless if it is in gear or not. I can't figure it out and have had several mechanics look at it and suggest that there is an internal problem with the motor. The motor has no problem hitting WOT with adequate power and we have put at least 50 hours on it with the vibration. The motor is a Jasper from 2010 and I have no idea how many hours are on it; computer says 495.
Here is a list of what I have checked/replaced/fixed:
I am at a complete loss here. I would have no problem pulling the motor if I knew for sure that there was an internal problem, but I am not sure.
Thanks in advance for any suggestions.
Here is a list of what I have checked/replaced/fixed:
- Full tune up while boat was being worked on(now on the 2nd set of plugs and third cap and rotor
- Tested/cleaned injectors (all passed)
- Replaced all sensors
- Compression check (185 on all cylinders except 7&8 which were 175)
- Swapped harmonic balancer, ECM, complete distributor between motors
- Replaced fuel pump and pressure regulator
- Removed, cleaned, and resurfaced exhaust manifolds and risers
I am at a complete loss here. I would have no problem pulling the motor if I knew for sure that there was an internal problem, but I am not sure.
Thanks in advance for any suggestions.