PondTunes
Petty Officer 1st Class
- Joined
- Jun 7, 2007
- Messages
- 387
Friend of mine has a 50 hp merc that has ceased to crank, checked the obvious things first such as the fuse, battery connections, then moved on to the plugs.
The engine spins over fine (however the bedix was stuck in the up position when I got there, a little WD40 and its disengaging fine now.)
The tach jumps up around 2000 rpms on a fresh battery when cranking
I have no spark at any of the three plugs on the engine when pulled out and grounded to the block.
I keep reading about DVA's and such being required to test some of these components. I have a Sperry Digital Multi-Meter that has a 1000 volts DC setting as well as peak/hold feature.. Is this adequate for testing the ignition system?
It got dark on us yesterday before I was able to dig deep into it, but I assume the stator is probably okay if the tach is moving or Should I test it with the ohm setting anyways?
The connectors at the top of engine coming from the stator were melted as well as the ones going into the regulator/rectifier but this appears to be a fairly common issue and I should just cut these out.
Our access is limited to what i can get on my blackberry and while kinda useful at least i can bookmark this thread for updates later.
There are four different colored wires, coming off of the stator as well running to a black box above the regulator/rectifier assuming this is the switch box. *i googled the part number and it came back as a rev limiter.*
I guess what my question is where should I start looking next?
The engine spins over fine (however the bedix was stuck in the up position when I got there, a little WD40 and its disengaging fine now.)
The tach jumps up around 2000 rpms on a fresh battery when cranking
I have no spark at any of the three plugs on the engine when pulled out and grounded to the block.
I keep reading about DVA's and such being required to test some of these components. I have a Sperry Digital Multi-Meter that has a 1000 volts DC setting as well as peak/hold feature.. Is this adequate for testing the ignition system?
It got dark on us yesterday before I was able to dig deep into it, but I assume the stator is probably okay if the tach is moving or Should I test it with the ohm setting anyways?
The connectors at the top of engine coming from the stator were melted as well as the ones going into the regulator/rectifier but this appears to be a fairly common issue and I should just cut these out.
Our access is limited to what i can get on my blackberry and while kinda useful at least i can bookmark this thread for updates later.
There are four different colored wires, coming off of the stator as well running to a black box above the regulator/rectifier assuming this is the switch box. *i googled the part number and it came back as a rev limiter.*
I guess what my question is where should I start looking next?