kenny nunez
Captain
- Joined
- Jun 20, 2017
- Messages
- 3,290
If the rotor is not turning while the starter is turning the engine over then there are a lot more problems internally in the engine.
Or aleast that's how I read it,..... 'bout 2 posts from the bottom of page 1,....I took the distributor cap off the rotor, does turn with the engine.
That unhelpful "advice" isn't really worth posting in a DIY forum, especially since this is a pretty minor problem.ALWAYS know when to NOT do a major DIY job.
Not sure which channels are which there, but I believe you should be getting a sine wave off of the distributor and a stepped signal off the module to the coil neg (either way it should be a switching wave form of some sort from both, don't remember off hand if the distributor trigger is hall type). Seriously though, the troubleshooting guide is basically bench testing each component, pretty straightforward stuff esp if you're comfortable with a scope. As for the diagram, I mean, try Google.Previous owner rewired portions of the boat, I have all winter to fix it. I never give up. Truly if I had a wiring diagram, id be done.
Is this correct? This is how its currently wired
J1171 distributor wire colors
From Distributor White-> Green/white TB4 ignition
From Distributor Black-> to Ground
From Distributor Red-> Red/White to TB4 ignition
I went through all procedures. Only possible issues
1) Bad rotor sensor
2) Rotor sensor faulty
3) Rotor sensor wiring incorrect
Last test was useing dual channel oscilloscope
key turned to on
Channel 1 +12vdc
Channel 2 - 12vdc
Turned held key start
Channel 1 +12vdc
Channel 2 + 8.5vdc
I have added a 12ga thhn wire going from battery minus to ground at TB4
cap off, Rotor does turn with engine.
I went through ALL of the procedures. Yes extremely easy. In the mid 70s I drove from house to house repairing TV sets in homes when in highschool.That unhelpful "advice" isn't really worth posting in a DIY forum, especially since this is a pretty minor problem.
Not sure which channels are which there, but I believe you should be getting a sine wave off of the distributor and a stepped signal off the module to the coil neg (either way it should be a switching wave form of some sort from both, don't remember off hand if the distributor trigger is hall type). Seriously though, the troubleshooting guide is basically bench testing each component, pretty straightforward stuff esp if you're comfortable with a scope. As for the diagram, I mean, try Google.
If you went through the TB troubleshooting and it says the sensor is dead this is a very common issue and easy fix. You may want to buy a rotor (trigger wheel comes with it) as last time I changed my rotor (was original maybe 12 yr old) I had to chisel the old one offPrevious owner rewired portions of the boat, I have all winter to fix it. I never give up. Truly if I had a wiring diagram, id be done.
Is this correct? This is how its currently wired
J1171 distributor wire colors
From Distributor White-> Green/white TB4 ignition
From Distributor Black-> to Ground
From Distributor Red-> Red/White to TB4 ignition
I went through all procedures. Only possible issues
1) Bad rotor sensor
2) Rotor sensor faulty
3) Rotor sensor wiring incorrect
Last test was useing dual channel oscilloscope
key turned to on
Channel 1 +12vdc
Channel 2 - 12vdc
Turned held key start
Channel 1 +12vdc
Channel 2 + 8.5vdc
I have added a 12ga thhn wire going from battery minus to ground at TB4
cap off, Rotor does turn with engine.