Maybe you could jury rig something with a vacuum cleaner ductape and small rubber hose to suck out the ceramic bits. I would then try new APP764's, 4 bucks each at Pep Boys, and make sure the firing order is correct. [image]
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Lubricate the threads with a tiny bit of neverseize, don't get any on the ceramic part. Tighten carefully. Then be sure the wire boots are clean inside and put some silicone grease in them to seal moisture out and snap on carefully. I think it's possible wrong firing order makes vibration. I hope you don't have a broken piston. Are you sure the plug hole is stripped out?
