Mr. Rick
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- Joined
- Feb 6, 2009
- Messages
- 793
Last week the bike kicked me back 3 times while trying to start. Another guy with more lead in his tush kicked it to life and I got home okay, but after sitting for a week it wd not start at all. Clamping the plugs to the head, ignition on, room dark, no apparent spark. I'd been wondering how long an old analog Boyer cd be expected to last, pulled off the (practically new) ignition switch, and got continuity on the hot (NU) wire all the way past the rectifier and capacitor to the switch. I assume the smoke goes to the white wire from there to the kill switch? Good continuity at every ground point I touched from the red battery wire. Charged the 4 year-old battery and then just bought a new one, harboring doubts...
Anyway, I was just about to pull the switchgear off to see what the kill looked like, began to look for Boyer diagnostics, etc., and then pulled up short to check the plugs themselves. See anything wrong? Only a few hundred miles on them.
Looked pretty good to me, but having 2 fresh sets, I pulled off the NGK's and clamped a pair of Champions to the head. Immediate light up in the dark, put all back together, fired right up.
Turns out both plugs (non-resistor) failed continuity on the center electrode. They're both dead.
Moral: Use an ohmmeter or continuity tester to check the easy (and cheap) stuff first. Resistor plugs shd (I think) show not much more than 5 or 6K ohms, non-resistors close to zero, from the top terminal to the center electrode at the bottom.
Neither shd pass current from center electrode/top terminal to the body or threads.
Question 1: Can a failing Boyer kill spark plugs?
Question 2: Does the new micro-digital Boyer have a "slow start" accomodation?
Anyway, I was just about to pull the switchgear off to see what the kill looked like, began to look for Boyer diagnostics, etc., and then pulled up short to check the plugs themselves. See anything wrong? Only a few hundred miles on them.
Looked pretty good to me, but having 2 fresh sets, I pulled off the NGK's and clamped a pair of Champions to the head. Immediate light up in the dark, put all back together, fired right up.
Turns out both plugs (non-resistor) failed continuity on the center electrode. They're both dead.
Moral: Use an ohmmeter or continuity tester to check the easy (and cheap) stuff first. Resistor plugs shd (I think) show not much more than 5 or 6K ohms, non-resistors close to zero, from the top terminal to the center electrode at the bottom.
Neither shd pass current from center electrode/top terminal to the body or threads.
Question 1: Can a failing Boyer kill spark plugs?
Question 2: Does the new micro-digital Boyer have a "slow start" accomodation?