Originally Posted by Ironkidzsled
Anyone give any advise on the best plugs for a 1000cc 74' xlch?
And out of these which is the better, Accel or HD?
Accel plugs are made by Denso (Toyota) while Champion makes for HD. Autolite plugs
seem very popular with Indy shops.
The latest techno plugs are iridium - go 100K miles in a water cooled car but don't
push'em that far in an air cooled engine.
If you use an ohm meter to check plug resistance you'll find Champions are higher than
the others resulting in a lower current spark.
Also, check your wires as the resistance goes up with age in carbon core designs
normally used / preferred because of reduced RFI / EMI properties. IMHO.