Re: OMC V4 CD iginition spark plugs

[frankr]

For what it’s worth, the 1970-71 three cylinder loopers about drove me crazy, trying to make them run right. They were supposed to run surface gaps, so they should run with surface gaps, right? Well life got much better when I gave up and started installing l77JC4 plugs. The darn motors would actually run!! Interestingly enough, their predecessors, the 55hp loopers ran fine on surface gaps.

Heh, heh, I even tried a set of surface gaps in my truck. Barely made it out of the driveway.