dtladd1993
New member
I'll try and make a long story short. I've been battling a loss of spark issue for a couple of months. Initially I thought the issue was fuel related but it's not. Here's what I've done
1. Rebuilt Carburetor
2.Set Dwell and timing
3. Tested on an auxiliary fuel tank
4. Replaced Coil,Cap, rotor, condenser, sanded points
5.Checked fuel pressure with gauge
6.Installed fuel water separator checked condition of fuel.
So after the boat was running for a while it would miss and cut out and then die, it was next to impossible to restart. I tested the ignition circuit and found the condenser wire was pinched between the cap and base plate of the distributor. I replaced it and it runs great for an entire trip. About 3 hours of continuous running half at 1500 the other half at 3500. I take it out about 2 days later and runs wonderfully again, but on the way back to the ramp the ignition starts to cut out about 3500. I installed a primer bulb for testing purposes, so I checked that and no change. I'm concerned about the resistor wire and whether or not that's contributing to my issue? My boat has the old school thermal choke so I believe my resister wire runs directly to pin 5 on the harness. I checked voltage at the resistor wire where it connects to the coil and it's 11.5 volts about 1 volt less than at the battery. I thought that I would see less voltage here? Is it possible I'm getting too much power at the coil and burning up my points and condenser. I'm chasing my tail here and frustrated. I'm good with mechanical but electrical isn't my forte. Any help is greatly appreciated. Perhaps I'm going about this all wrong.
Dan
1. Rebuilt Carburetor
2.Set Dwell and timing
3. Tested on an auxiliary fuel tank
4. Replaced Coil,Cap, rotor, condenser, sanded points
5.Checked fuel pressure with gauge
6.Installed fuel water separator checked condition of fuel.
So after the boat was running for a while it would miss and cut out and then die, it was next to impossible to restart. I tested the ignition circuit and found the condenser wire was pinched between the cap and base plate of the distributor. I replaced it and it runs great for an entire trip. About 3 hours of continuous running half at 1500 the other half at 3500. I take it out about 2 days later and runs wonderfully again, but on the way back to the ramp the ignition starts to cut out about 3500. I installed a primer bulb for testing purposes, so I checked that and no change. I'm concerned about the resistor wire and whether or not that's contributing to my issue? My boat has the old school thermal choke so I believe my resister wire runs directly to pin 5 on the harness. I checked voltage at the resistor wire where it connects to the coil and it's 11.5 volts about 1 volt less than at the battery. I thought that I would see less voltage here? Is it possible I'm getting too much power at the coil and burning up my points and condenser. I'm chasing my tail here and frustrated. I'm good with mechanical but electrical isn't my forte. Any help is greatly appreciated. Perhaps I'm going about this all wrong.
Dan
