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Motorcycle Repair/Honda VF 750 Magna not firing on one side


Hello, my name is Charlie Duplechain, I have a 2000 Honda Magna 750. The right two cylinders do not fire at idle, above idle its runs fine. I used a volt stick (glows red when current is present in an insulated wire) and checked the left side. The volt stick glowed red at idle. I checked the right side and nothing at idle. When I gave it a little throttle the volt stick lit up and you could hear the cylinders fire up. I thought it might be a coil but there is a coli for the front and one for the back, not left and right. Any suggestions?


Well, that is kind of odd, isn't it? I think I would check the spark plugs to see if they are fuel/oil fouling and then check the spark plug caps for excessive resistance. The other thing to check is if the spark plug cap/wires are arcing through to the engine, instead of across the plug gap.

If it gets deeper than that, check with this site...

Bill Silver

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Bill Silver


Need help with vintage Hondas from the 1960s? I am an expert with 250-305cc bikes in particular and most all of the other pre-91 models, in general. I do NOT claim to have a great deal of experience on Gold Wings, Cruisers, ATC/ATVs and dirt bikes.


I have owned/ridden/maintained Honda motorcycles for 35 years. I have written five books on Honda repairs and collecting. I was a service manager for two Honda shops back in the 1980s.

VJMC (Vintage Japanese Motorcycle Club) of North America

VJMC newsletter, as editor for two years and as contributing editor currently.

3 years auto shop in high school, teacher's aide in Automotive Technology in Jr. College, Diesel mechanic course in college, self-taught mechanic and automotive writer.

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