Ok. so my 4 cylinder Merc 470 port engine won't start. I am not getting spark to 3 of the 4 cylinders. How is this possible?? Only one of the 4 spark plugs is getting spark. I pulled all 4 plugs and put to good ground. Cranked and only 1 plug arcs. WTF??
I have a twin engine and my problematic...
I've got twin engines, I dropped both lower units to replace impellers for prev maint. After making good head-way, I got cocky. Then pulled the upper gear housings off without any fuss knowing gimble bearings haven't been greased in over 5 years either. Upper gear housings came off pretty easy...
I'm replacing the impeller and cannot for the life of me get the base housing out. If previous owner/serviceman used perma seal or similar, I don't think I can get it out without damaging something. I plan on replacing it anyway but I don't want to do greater damage to the casting around it or...
