I have a Mercruiser 233 I rebuilt out of my 1977 SeaRay, Engine S/N 4497497. I have been meticulous about taking pictures during disassembly and labeling every wire and bolt. I have it back together and one of the upgrades I did was the Pertronix Ignitor II module with the Flamethrower II coil and I have no spark from the coil. I have gone over every wiring diagram and just about every posting regarding the subject. Here is what I've done to troubleshoot the problem.
1. The first wiring was simply installing the new coil in place of the old one and of course installing the ignition module. When that failed I read a few posts and reviewed my wiring diagram to realize I needed to address the resistance cable. I cut and taped off both ends of the resistance cable and ran a 12 volt ignition wire from the choke lead straight to the positive side of the coil. No difference.
2. Reading the manual it talks about the shift cutout switch. It says it is wired to the primary side of the coil, thru the switch and to ground, but the wiring diagram shows this brown wire going to the negative side of the coil. I'm suspecting this could be part of my problem. However, I did test the limit switch at the transom and everything is working as it is supposed to there.
3. I checked the resistance of the new coil which should be 0.6 OHMS and it showed 0 resistance so I checked the OEM coil and it was about 0.5 OHMS so I threw it in there and tried again, nothing. I have a 3.0 OHM Flamethrower on my dune buggy so I threw that on there and tried it still no spark.
I have no idea what I'm overlooking, I have 12 volts, with the key on, at the positive side of the coil. I have the tan wire from the starter solenoid and the red wire from the Ignitor II going to the positive side of the coil and I have the brown wire from the shift cutout switch and the black wire from the Ignitor II going to the negative side of the coil. I have even tried removing the brown wire from the negative side to see if it made a difference and nothing.
Does anyone see what I'm missing here?
1. The first wiring was simply installing the new coil in place of the old one and of course installing the ignition module. When that failed I read a few posts and reviewed my wiring diagram to realize I needed to address the resistance cable. I cut and taped off both ends of the resistance cable and ran a 12 volt ignition wire from the choke lead straight to the positive side of the coil. No difference.
2. Reading the manual it talks about the shift cutout switch. It says it is wired to the primary side of the coil, thru the switch and to ground, but the wiring diagram shows this brown wire going to the negative side of the coil. I'm suspecting this could be part of my problem. However, I did test the limit switch at the transom and everything is working as it is supposed to there.
3. I checked the resistance of the new coil which should be 0.6 OHMS and it showed 0 resistance so I checked the OEM coil and it was about 0.5 OHMS so I threw it in there and tried again, nothing. I have a 3.0 OHM Flamethrower on my dune buggy so I threw that on there and tried it still no spark.
I have no idea what I'm overlooking, I have 12 volts, with the key on, at the positive side of the coil. I have the tan wire from the starter solenoid and the red wire from the Ignitor II going to the positive side of the coil and I have the brown wire from the shift cutout switch and the black wire from the Ignitor II going to the negative side of the coil. I have even tried removing the brown wire from the negative side to see if it made a difference and nothing.
Does anyone see what I'm missing here?
