I've got a 2001 Merc. 90HP 4stroke. The computer went out a while back and I'm trying to decide whom to blame, Mercury or Yamaha? I was thinking of repowering with a Yamaha because of the problems I've had with the Merc, but I don't think I will if most of the problems can be contributed to Yamaha. I also had an oil pump leak and have since found out that is a problem with the yamaha design. Anybody have a reasonable guess?
