Pretty much stock other than E6 swirly heads and an aluminum triple core.
Things I did before going in:
New Air filter.
Oil Change and filter. 20w-50. Also added that honey stuff to thicken because suspect
possible valve guide or seal leakage, oily threads on a few plugs and very light carbon build-up on 2 plugs.
Cleaned and re-gapped(.050) other plugs, R/R the 2 carbon ones. All plugs two years old max.
Autolite copper cores.
Cleaned rotor and cap and reused. light carbon. Only 2 years old, low miles.
Ford Racing 9mm Wires are all good. Installed 4 yrs back.
Battery voltage 12.4, on the margins but I think there is a good spark.
Fuel treatments: used STP fuel cleaner on a tank then another one & then finally Cataclean for the 4 yr old CAT.
Filled up with Chevron techron midgrade.
filled tires to max.
Went in on a humid day around 60 degrees.
Engine runs great, idles smooth, torquey with the swirly heads.
That said, I have needed to replace Cats way too often, perhaps every 4 years to pass. gettin $$$ pricy.
Air pump, tad/tab and 02 sensor all good last time checked, few yrs back.
Any help would be greatly appreciated.
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