Forum

[John R]

'89 350. I have a Resistor plug cap when I should really have a non-resistor one. Is this enough to explain why I don't have a spark?

[scotty]

Think resistor caps were used to cut down on tv interference, take the cap off and see if you get a spark from end of wire to earth or try another plug.

[Adrian]

Using a resistor/supressor plug cap AND a resistor plug will give you a weaker spark but it's probably not enough to kill it altogether unless there are problems elsewhere. Normally you'd want either a plain plug cap and resistor plug or plain plug and suppressor cap for a coil ignition bike. A.

[Leon Novello]

Check for the possibility of there also being a resistor high-tension lead, which could give you a third resistor.

[John R]

Thanks guys. Probably a fault in the wiring on the LT side, just one of those situations where everything seems OK but it just refuses to spark! Coil, HT lead cap and plug all seem good. Battery good, unlikely to be a fault with the electronic ignition. Driving me bananas!

[Bullet Whisperer]

'Unlikely to be a fault with the electronic ignition'. Really? I have changed the cdi boxes on numerous bikes to restore the sparks over the years, so don't rule it out! Regards, Paul.

[Revband]

"unlikely to be a fault with the electronic ignition" don't discount it they go faulty and unlike points you can fix them.

[Revband]

Paul just beat me, and mine should read . Can't fix them.