Quote:
Originally Posted by Bibio
with spark plugs its not just the tips that erode. spark plugs can look fine but the resistance breaks down, which is the biggest cause of spark plug failure.
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Yes, although I've never had a spark plug resistor fail as yet ... however I have had resistors in the plug caps fail.
On my old GT380 I used to use platinum plugs (later replaced with Iridiums) and non-resistor caps, and they never, ever needed re-gapping or cleaning. Used to give the tired old ignition system a helping hand