getting lower mpg after changing spark plugs on a 2007 dodge 1500 hemi
gapped to .032...or no gap like the modern ones?
I thought .035 was the gap.
Any loss in power? Did all the plug boots and coils snap down correctly?
gap should be .035. all plugs must have a gap for the spark to cross. no reason for fancy plugs either. new hemi rams come factory with basic champion plugs and that's what they run the best on. double check that all coil packs are mounted properly.
Madmopar is right on the money..use the factor plugs.. not the cross reference ones ..we have found them to be a lot colder range...I use the champions they work great
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