Fish Bin Laden
Cadet
- Joined
- Jan 28, 2012
- Messages
- 16
Re: Mercruiser 4.3L EFI Rev Limiter
Got it. Amillion thanks to all you guys, your help has been awesome, I have learnt so much more about this engine since starting this thread and now have the confidence to travel even further off shore. If any of you should ever travel to the fabulous NZ please give us a call. Contact details below. Tail Gunner - you can pick up your cigar as it was indeed a slipping hub, never blew out completely which would have made the diagnosis easier but just a slip followed by a pick up as the rev limiter kicked in probably several times per prop revolution. The tach peaking to 6000 plus was merely the momentum of the rapidly oscillating needle.
jimpaulinerouse@xtra.co.nz
Very odd the limiter seems to work at the 5000 point...yet you say it can peak to 6000> id give OBD a call and ask them if the ecu can behave like that
(After a short period of use the tacometer needle will oscillate wildly usually between 4500 & 5000 revs)
That sounds normal its preset for 5000....the oscialltion should be very breif almost like a slight miss.. which it is...
If that motor is running to 6000 your way under propped..I doubt very much it is turning 6000..Could there be something in the drive system that is letting go occasionally..Not a spun hub
Got it. Amillion thanks to all you guys, your help has been awesome, I have learnt so much more about this engine since starting this thread and now have the confidence to travel even further off shore. If any of you should ever travel to the fabulous NZ please give us a call. Contact details below. Tail Gunner - you can pick up your cigar as it was indeed a slipping hub, never blew out completely which would have made the diagnosis easier but just a slip followed by a pick up as the rev limiter kicked in probably several times per prop revolution. The tach peaking to 6000 plus was merely the momentum of the rapidly oscillating needle.
jimpaulinerouse@xtra.co.nz