| Re: [GMCnet] Onan ignition questions [message #323682 is a reply to message #323679] |
Sun, 10 September 2017 00:22   |
Ken Burton
Messages: 10030
Registered: January 2004
Location: Hebron, Indiana
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k2gkk wrote on Sat, 09 September 2017 21:20Isn't the Onan running wasted spark where both plugs fire simultaneously even though only one cylinder is on the power stroke? Both plugs have fire in order for the motor to operate.
Mac in OKC
"The Money Pit"
YES.
The plugs are wired in series. If one is unplugged the other will not fire. In this arrangement the spark must jump across both plugs at the same time. The Onan ignition is a weak one so the plug gaps MUST be set exactly. That gap is .020". New plugs are usually set too wide and need to be re-gapped down to .020".
Ken Burton - N9KB
76 Palm Beach
Hebron, Indiana
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