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After 30k everything ignition related is suspect. Coils, spark plugs. I inspect my spark plugs every year, and replaced every 2-3, at 8000mi per year.
It's not that they're finished at that mileage, it's that when ignition starts to go on these cars, the first symptom is often engine failure. So you want to treat it preventatively.
Those look fine and reflect a relatively healthy system.
I'm going to disagree with Loki on one point: everything in the ignition system is suspect at 20K miles. I had a factory Rev B coil fail at 10K miles. That spooked me into going with the BHR upgrade. Now, I don't worry about coils or wires, but I do check the plugs yearly and replace them every 20K miles.
Those look fine and reflect a relatively healthy system.
I'm going to disagree with Loki on one point: everything in the ignition system is suspect at 20K miles. I had a factory Rev B coil fail at 10K miles. That spooked me into going with the BHR upgrade. Now, I don't worry about coils or wires, but I do check the plugs yearly and replace them every 20K miles.
Why do the wires not wear out? I could understand the coils not needing replacement, but aren't the wires the same as any other set?
Wires don't suuuuper wear out at all, but being where they are, low to the ground, they can be damaged or the contact points can oxydize. Good idea to inspect when changing plugs, not necessary replace.
As for wires, you could always inspect their resistance with a multimeter. IIRC the OEM wires are also made a bit differently from most aftermarket wires. OEM wires wear out a bit faster.
03-24-2019, 04:57 PM
