STEER94GT

My car ran great, then I decided to do a tune up so i put new autolite double platinum plugs gapped at .052, for racing wires, MSD cap rotor and coil. Car ran great for a day or so then started missing under heavy throttle. I checked the plugs again and they were fine. I put them back in. Car started running great again for a day. then started missing. I checked all the wires on the distributer and it showed that every cylinder had a misfire ( didnt change idle when i pulled each wire). So i went to the next easiest thing - coil. I returned the MSD coil for another one, car ran great. I thought the coil mustve been bad and when it got hot it started missing.Then 2 days later started missing again. what should i do?????? I'm very frustrated and confused. Any suggestions? Im thinking about just putting it all back to stock. I

SonicBlueFiveSlow

I would get rid of those double platinums and switch over to Autolite 25's.

irish1

Completely agree, autolite 25s are what my car likes.

Matt

mjr46

make sure all wires are pushed on tight on cap and plugs

STEER94GT

Ive been saying all along i should put the autolite 25s back in, thats what i pulled out when it ran great. I am going to end up doing that when i put my long tubes on next week.Last night i put the stock coil back in and it still misses. So im gonna lean towards the plugs. New set of autolite 25s next week...where should i gap them? between 50-54? Its a stock motor, will have Mac LT, Mac prochamber, flows, CAI, and im doing the timing 14 degrees next week.

STEER94GT

and where could i get a diagram on removing the smog pump? I might as well do that while im in there. and the egr stuff, will make it alot easier changing plugs on that right side