370Dancer
Well-Known Member
- Oct 2, 2006
- 2,489
- Boat Info
- 1998 370 Sundancer
- Engines
- 380hp MAG MPI Gen VI with V drives
New to me, 350 hours each repower I did late last year. LA Fire Rescue engines, but they did sit for a couple of years without being run.
I've been fighting some issues where things got mis-adjusted, and some stuff just didn't work.
I did refresh most of the ignition just because it's been 20 years.
I'm still dogged by what is probably a miss, because the transmission is rattling at idle (not as bad as it used to), and I cannot get top end out of it.
Since I have the technology, I did some samples of ECM parameters at various TPS and RPM settings to see if there's a glaring issue, or a pattern.
The results are attached as an Excel file. If you need it in another format, just ask.
While you are looking at this, I am going to recheck fuel pressure compared with Starboard, and put another fresh set of plugs in it. There's a txt file of next stuff to try. The only mechanical thing I found so far was a valve rocker that had been punched thru by the lifter push rod, which was preventing the valve from opening much. I thought that was really going to be it, but I still can't top out in RPMs.
Ask away, I'm all ears.
I've been fighting some issues where things got mis-adjusted, and some stuff just didn't work.
I did refresh most of the ignition just because it's been 20 years.
I'm still dogged by what is probably a miss, because the transmission is rattling at idle (not as bad as it used to), and I cannot get top end out of it.
Since I have the technology, I did some samples of ECM parameters at various TPS and RPM settings to see if there's a glaring issue, or a pattern.
The results are attached as an Excel file. If you need it in another format, just ask.
While you are looking at this, I am going to recheck fuel pressure compared with Starboard, and put another fresh set of plugs in it. There's a txt file of next stuff to try. The only mechanical thing I found so far was a valve rocker that had been punched thru by the lifter push rod, which was preventing the valve from opening much. I thought that was really going to be it, but I still can't top out in RPMs.
Ask away, I'm all ears.