VL-800 misfires between 55 & 65 mph cruising or accelerating. Slight "pop" with skips. Never backfires on deceleration.
Ran great for 5 years. No changes in maintenance since rebuild ~20K ago.
Started month ago only twice a week. Got worse over time so now is every day. Still, comes and goes for no apparent reason. Some days, works fine all day.
Did the Sea-Foam thing & tried all different kinds of fuel. Ran w/o air cleaner but, no change.
New expensive, properly gapped spark plugs. Both coils & plug wires well within ohm specs and physical condition looks good.
Mechanicals seem good and no probs found in wire harness except maybe ground @ coils about 1/2 volt above battery.
A reference on page 11 reported 2nd gear misfire problem (unrelated) but also greater problems fixed w/new $440 ICM.
Repair shop says almost certainly not ICM because not old enough and ICM problems never come & go. Once they fail, they never work again.
I run V&H pipes, don't know if jetted or not but have worked fine for last 5 years.
I don't know but it's expensive to pay $440 just for a swap test. Can anyone help?
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