Russ
Squirt WD-40 around the plug, let it sit a while
and try again.
You're wise to be careful, especially with
aluminum threads.
When you put them back in, put a dab of anti-sieze
(from auto store) on the spark plug thread so that
next time, it'll be easier to get out.
See what condition the plug is in while you have
it out. Light tan/slightly gray is aok.
Recommended gap is 1.01 mm (.040 in.).
Aftermarket plugs use different types of material
in their electrodes and different shapes for their
electrodes for a better intense and directional spark.
MPG or performance gains are small unless original
plugs are just bad.
Champion puts out a spark plug made for trucks.
I haven't tried them. Manual says the Dak doesn't
benefit from special plugs (?).
Hope this helps.
Bob
Burlington, Ontario, Canada
tigers@bserv.com
Current: '97 CC Sport, 5.2L, 3,55 auto., 4x2, Gibson dual, K&N filter
element.
'85 Shelby Turbo Charger, 2.2L, manual.
'70 Challenger, 383-4bbl, auto.
Past: '71 Road Runner, 340-4bbl, auto.
'70 Duster 340, auto.
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