It almost sounds like you have a bad coil, the one you replaced. There are ways to check that coil out, with an electrial meter. Your right about one signial to the coil, it then splits it up.
89 Phaser, Weak Spark One Side, Chasing Ghosts!
I have an 89 phaser with weak spark on one side, strong (fat, blue) on the other. the weak spark is not hot enough to ignite the mixture, so im always running on one cylinder and it does run well ie consistant good spark. i have replaced plugs, boots, wires, secondary (external) coil, CDI. i have tested wiring from the kill switch. I have tested the stator assembly and its within spec per the manual's resistance values. i've pulled and inspected the stator, looks OK ie nothing broken. Im considering replacing the stator assembly but don't know how this can result in a weak spark on one side....isnt it only sending one pulse to the CDI? These type of ignition systems pulse throught the secondary coil at the same time, ie wasting a spark every other time i thought...? Any info would be appreciated, hate to slap a new stator in if it isnt the issue.
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i did test the coil's resistance measurements before replacing it and found that it tested within spec. replaced it anyway and replicated the weak spark on the same side....
Last year I bought 2 new plugs for my Yamaha. After about 3 rides, 1 of the new plugs just died. This year, I bought 2 new plugs again, 1 plug never did work. What I'm saying is, it MAY be possible that 1 of your new plugs are bad. Did you try switching plugs to see if it's that plug or if it's a weak spark going to that particular side? Just a thought.
replaced the stator....no change still weaker on one side.
If you haven't tried replaceing the spark plug, you need to do that. if one side of the coil is fireing than it has to be a boot, wire, or plug.
Phazer coil is made to have weaker spark on one side!I have an 89 phaser with weak spark on one side, strong (fat, blue) on the other. the weak spark is not hot enough to ignite the mixture, so im always running on one cylinder and it does run well ie consistant good spark. i have replaced plugs, boots, wires, secondary (external) coil, CDI. i have tested wiring from the kill switch. I have tested the stator assembly and its within spec per the manual's resistance values. i've pulled and inspected the stator, looks OK ie nothing broken. Im considering replacing the stator assembly but don't know how this can result in a weak spark on one side....isnt it only sending one pulse to the CDI? These type of ignition systems pulse throught the secondary coil at the same time, ie wasting a spark every other time i thought...? Any info would be appreciated, hate to slap a new stator in if it isnt the issue.[/b]
spark goes between leads not ground!
PTO has less spark if I remember right
PowderLites
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