7.4l horizon

I just bought a 1997 370 Sundancer with 7.4 MPI Horizons. I'm hoping someone with boats in that vintage can help me out. I have the Sturdy Engine Synchronizer (I think it's the first generation, because the manual posted on these forums is for a later version). When I try to engage the synch...

Hi All, Twin ‘98 7.4 454 Horizon Engines looking for some general suggestions on what to check as my port rpms are jumping around a good bit. Not at idle but at running speed up to 400 rpms up and down. Starboard maybe 100 rpm fluctuations. Not sure if injectors are all original or not but...

Hey guys, this is my first post but I've been looking for a boat for a while and I think I finally found one, it is a long ways away so I've been doing everything without physically seeing the boat yet. It is a 1998 330 Sundancer with less than 500 hrs and I had the survey done today. I haven't...