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Ok so I got a service manual and started the diagnostics on my F9.9 - no spark on 1 cylinder.
Following a suggestion on the board, I replaced the ignition coil - wrong. Same cylinder - no spark (I have already swapped spark plugs and plug caps to eliminate them as suspects).
So the diags on the I measure the voltage on the CDI output (orange and black) to the ignition coil and it is very low. Should read at 1500rpm about 195 vac, reads around 7vac. So next I check the charge coil output. Should be 205vac, read 40vac.
The pulser coil read from 1-2 vac depending on speed, so it's probably ok.
So if I put this all together, a bad charge coil (didn't know they went out that easy) is not providing enough voltage to the cdi for the capacitor to fully charge and fire for both cylinders, thus only 1 cylinder fires. Very strange scenario, I would have thought that it would be quite random that each cylinder would fire sometimes, but it seems that #1 always fires and #2 never does.
Anyone else had any experience with this kind of failure?
Thanks.
Following a suggestion on the board, I replaced the ignition coil - wrong. Same cylinder - no spark (I have already swapped spark plugs and plug caps to eliminate them as suspects).
So the diags on the I measure the voltage on the CDI output (orange and black) to the ignition coil and it is very low. Should read at 1500rpm about 195 vac, reads around 7vac. So next I check the charge coil output. Should be 205vac, read 40vac.
The pulser coil read from 1-2 vac depending on speed, so it's probably ok.
So if I put this all together, a bad charge coil (didn't know they went out that easy) is not providing enough voltage to the cdi for the capacitor to fully charge and fire for both cylinders, thus only 1 cylinder fires. Very strange scenario, I would have thought that it would be quite random that each cylinder would fire sometimes, but it seems that #1 always fires and #2 never does.
Anyone else had any experience with this kind of failure?
Thanks.