There might have been a piece of carbon break up & fly around & bend the electrode. AC 45 are fine but I like to use the extended tip plugs on OHV engines.Like 45S. Did the Napa guy look for the vacuum advance unit. It seems like they would list it. There are 3 specialty stores in K.C. but I believe you are near the St. Louis area.

Last edited by Wrenchbender Ret.; 05/06/2008 9:59 PM.
They say money can't buy happiness. It can buy old Chevy trucks though. Same thing.
1972 Chevy c10 Cheyenne Super
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