Which spark plugs?

91CaliTBIRD

Registered User
hey i had the local mechanic install new spark plugs which i purchased at Napa (autolite dp). I needed the motor mounts to be replaced so i figured while its in the air he might as well do the plugs since i dont have anytime anymore. Anyways after i picked it up, it ran with less power and under a load it stumbles. So after i had the mechanic take the plugs out again to recheck the gap at .052 and then a fairly large diagnostic he didnt come up with much. HAS ANYONE HAD OR HEARD OF ANY PROBLEMS with these Autolite double platinums on our cars? I was trying to find the receipt to post which plug # they gave me. Will it run like this with the wrong Autolite plug? I have about had it with this problem.
Thanks
 
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