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Threads on Motorcraft Plugs
Because my 93 GT pinging under load (Vortech SQ-Trim) and only at 5th gear, i am replacing the Autolite 3922 plugs (2 ranges colder with Motorcraft AWSF-22C (1 range colder).
I had noticed that the Motorcraft plugs are only "half" threaded as opposed to the Autolites which are fully threaded. I suppose that the Motorcraft plugs do not screw as far as the Autolite's. Is this OK? |
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