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Rear cylinder not firing

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Old 06-13-2010, 01:03 PM
hog1957 hog1957 is offline
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Default Rear cylinder not firing

Hi,

I got a problem with my 82 FXRS, it's a 93cui Stroker, S&S heads dual plug, Hi lift cam, roller rocker, S&S Super E with a Dyna S single fire.
During my last ride, the engine lost power and missfired. I had the same problem before due to a broken wire (according to the dealer). I checked the wires, changed the Dyna S, checked the coils( interchanged them), went with new ignition cables, checked continuity, no change!
Compression is good.

Any ideas?

Frank
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Old 06-13-2010, 01:57 PM
sqdealgeorge sqdealgeorge is offline
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Frank are you running suppression core wires off the coils if yes the one modules on the Dyna S might be bad How are your adv wts ?
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Old 06-13-2010, 02:03 PM
hog1957 hog1957 is offline
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No, and the Dyna S is brand new, I changed it today.
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Old 06-13-2010, 02:11 PM
hog1957 hog1957 is offline
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is there any way to test the adv wts?
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Old 06-13-2010, 02:13 PM
hog1957 hog1957 is offline
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I checked them today, they moved freely.
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Old 06-13-2010, 06:52 PM
sqdealgeorge sqdealgeorge is offline
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I hope you're not running spiro wound plug wires !
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Old 06-14-2010, 06:14 AM
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Shane Hutchins Sr. Shane Hutchins Sr. is offline
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Have you checked the wires from the Dyna to the coils for a break?
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Old 06-14-2010, 10:01 AM
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stevelonewolf stevelonewolf is offline
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One common problen i've seen is if the rear cylinder is not firing, it was due to the Single fire ign.(Dyna-S)
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