FJ Ignition Woes

[hiboy1979]

Hi all new to the site and I just brought home a beautiful 1989 FJ1200. My problem is I'm not getting spark to the 1&4 coil. So far here's where I'm at- charged battery, battery is new, when I switch the coil connectors between the two coils I get fire to the 1&4 coil. Pulled the timing cover everything looks great visually, Not sure what the air gap is for the rotor and pickup. So anybody got any simple ideas before I start tearing into the wiring and connectors. Thanks

[Dan Filetti]

Check the ground, I believe it's where the coil is mounted to the frame, corrosion can weaken the ground to the point of failure, take the coil off, clean the area up so that there's a good [clean] metal to [clean] metal mating.  Could be that simple.  Worth doing anyway.

Dan

[83elite]

Well, I was going to post this as a new thread, but I just finished up the same exact problem.

Check the sidestand switch. Follow the harness over the starter to the connector under the left side panel (near the back of the battery box). Unhook the connector and jump the two terminals in the connector (the harness side, not the switch side). Check for spark/ignition. This is what mine turned out to be (along with other problems that I'll post later).

[hiboy1979]

 Allright an update- I tried bypassing the sidestand safety switch, no luck. Started chasing wires. Harness from coil to CDI checks fine and I have a little more than 10 volts to the coil but no interupt signal from the other wire, so that's why it's not firing that coil. It looks like there is an aftermarket timing rotor on it, anyone ever have an issue with one of these? So next I'll check the wiring to the pickup. Anybody know how to test the pickup itself? Thanks to those who have replied with sugestions.

[andyb]

Pinched wire bundle going past the oil filter housing? 

Sounds like you've got your head on straight and should be able to hunt it down, carry on.

[racerrad8]

Allright an update- I tried bypassing the sidestand safety switch, no luck. Started chasing wires. Harness from coil to CDI checks fine and I have a little more than 10 volts to the coil but no interupt signal from the other wire, so that's why it's not firing that coil. It looks like there is an aftermarket timing rotor on it, anyone ever have an issue with one of these? So next I'll check the wiring to the pickup. Anybody know how to test the pickup itself? Thanks to those who have replied with sugestions.

Ohm check which should have a resistance of 149-182 at 68*F.

From there make sure you check for pinched wires as Andy has recommended and then do a wire wiggle watching the ohm meter.

There is no problem with the aftermarket rotor which advanced the spark curve but doesn't affect the spark cycle.

Randy - RPM

[hiboy1979]

OK checked the wiring harness from the CDI to the pickup conector on the left side of the bike. They checked out for continuity and were not grounding. I also ohmed the pickup at the harness conector (168) and at the CDI (169) performed the wiggle test (thanks racerrad8) and everything seems fine no changes on ohm reading. I also bypassed the clutch safety switch, still nothing. Any more ideas? Thanks again for any help.

[racerrad8]

Is it a single or dual P/U? I do not know off hand what year they went from dual to single P/U. If the dual P/U coil advancing rotor is installed it will only have spark at the one coil.

Take a picture and forward it so I can see what you have.

Randy - RPM

[hiboy1979]

 It is a single pickup. I took some pictures but I'm not sure how to post them.

[racerrad8]

It is a single pickup. I took some pictures but I'm not sure how to post them.

You can send them directly to me at randy@rpmracingca.com

Randy - RPM

[hiboy1979]

Just wanted to update. Turned out to be the ignitor. Got another off ebay plugged it in and vuala we have spark. Again thanks to those who offered advice.