Quote:
Originally Posted by EcoCivic
Great point about the gap! I gapped the plugs to the OEM spec of .0044 inches. Should I have gapped it wider to get the maximum benefit?
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They should be gapped bigger,55 thou, but it has been so long since I did spark ignited engines I forgot the rule of thumb. Maximum gap is a mix of various worst case scenerios that prevent effective fire (aka fouling).
Ideally, they should also be indexed, but you need either gaskets or many more plugs.