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spark plug gap?
#1
spark plug gap?
my mustang had 58,000 miles when i bought it,and i just changed spark plugs,and the gap on the old plugs was .43 and they all looked great,so i put the same type plugs back in which are autolite,764s and gapped then the same.i know the gap is supposed to be .54,but if i try to gap them to .54 it just looks too wide,any ideas,what do you guys set them at?
#2
Just went through the same thing with my '96 earlier this year. Went to do plugs, pulled the old ones at 82k and they looked virtually brand new with a gap of about .043-.045. Just regapped for the spec's .054 and let it go... Seemed to pick up a small about of throttle response and mileage but I don't remember anything dramatic.
Edit... I hope you didn't try to gap them at .54 as thats over 1/2 of an inch!
Edit... I hope you didn't try to gap them at .54 as thats over 1/2 of an inch!
#4
I think you're right with that range... If you're using a double platnum plug you'll see VERY little gap growth. Combine that with a fairly effective ignition system like our cars have (EDIS or COP) and I can see no reason to run a conservative gap.
#6
#7
#9
yea,i see my mistake,should be .054.my other question is,when i bought the new autolites,764s,the gap was at .045, the same as my old plugs,but if i try to gap the new plugs at .054 like it is supposed to be,it makes a slant in the gap? it is hard to gap them to .054.can you tell me what is wrong?