captbuddy
Veteran Member
Can someone tell me why would my rpm gaugestart jumping up and down unless I get over 3000 rpm. It doesn't work while you are at idle. About half trolle it starts jumping all over. Do I just need to replace the gsuge.
No problem. I know next to nothing about the engine but a quick search turned up the manual. I scanned the pages referenced in the index for tach but couldn't find a sensor / sending unit. Maybe a more thorough dig would find something.Thanks Bacchus
That looks like a pressure or temperature sending unit.Everywhere the books states the location of my tach sending unit is supposed to be, it is not. I did read that the perkins engine was built all over the world so they would not all be the same. I found this sending unit on the port side. In the manual it says provision is made, on the right side of engine, for a drive at half engine speed to be taken from the oil pump spiral gear to a tach.
Don, I hate acting so stupid but which wire do I need to trace