Running Magnecor KV85, have had them over 3 years. How often do you guys change your wires? Reason I'm asking trying to hunt down on a pinging problem. If I run 93 octane or better the truck doesn't ping. Anything lower PING PING PING when floored. New ignition module, coil, Crane HI-6, new plugs.
Sparkplug wires longevity?
- Thread starter Sy4Life
- Start date
turbodog
Donating Member
I've had a set go over 2 years, until I screwed up and let them touch the downpipe. I've had other sets go bad in a few months, before I learned to protect them from the heat. The method I've found useful for initial diagnosis:
Tune the FM radio to a really weak station down at the low end of the dial. If you hear a 'snap snap snap' interference noise that changes speed with engine RPM, you have a wire arcing. If you can clearly hear the individual 'snaps', it's a plug wire. If the 'snaps' come so fast (even at an idle) that you can barely tell them apart, you have multiple plug wires bad or the coil wire is arcing. HTH
Tune the FM radio to a really weak station down at the low end of the dial. If you hear a 'snap snap snap' interference noise that changes speed with engine RPM, you have a wire arcing. If you can clearly hear the individual 'snaps', it's a plug wire. If the 'snaps' come so fast (even at an idle) that you can barely tell them apart, you have multiple plug wires bad or the coil wire is arcing. HTH
Re: Sparkplug wires longevity?
i wouldn't run anything less than 93 if you can help it....that is unless you retard the timing somehow and lower the boost...i think you found the answer to your own problem....audible pinging is a very, very bad thing....i would start by getting datamaster on it, some 93 fuel and check your knock counts on the screen because your ecm can pick up knock (ping) that we aren't capable of hearing.....
Sy4Life said:
i wouldn't run anything less than 93 if you can help it....that is unless you retard the timing somehow and lower the boost...i think you found the answer to your own problem....audible pinging is a very, very bad thing....i would start by getting datamaster on it, some 93 fuel and check your knock counts on the screen because your ecm can pick up knock (ping) that we aren't capable of hearing.....