I had my local Mercruiser mechanic perform a valve job and replace the exhaust manifolds on my Baja 232 (stock 454 Mag MPI) as he suggested. When I got the boat back, it ran wonderfully smooth and felt quite strong, however the KNOCK SENSOR which has never errored before, keeps creating alarms and automatically retardeds the timing which has limited the RPMs to 4000.
The mechanic has no idea what has happened and has replaced the knock sensor. He also asked my to add an octane boost additive to the fuel and replace my new Bravo/1 22p prop which was cupped (23p) and balanced by ThrottleUp with the original stock Mirage/PLUS 23p which I have also done.
Nothing has changed .....
I am not fully confident in this Mercruiser mechanics ability to solve this problem without weeks of blind effort and a great deal of expense. I was hoping that a fellow Hot Boater could refer me to a quality Mercruiser mechanic who works in the Channel Islands Harbor or Ventura areas who might be able to effectively solve this problem. I do wish to keep the engine fully stock but would like to keep it operating properly at peak performance.
Any referrals would be greatly appreciated.
Thanks
Bill