Spark Plug Helpp - Ford Forums - Mustang Forum, Ford Trucks, Ford Focus and Ford Cars

BlackHero99 · 09-14-2009, 15:21

I just picked up a new set of spark plugs from autozone, I fried mine on I75 passing someone..I have no idea how to take them out and i got a college test to take tomarrow.. I need help asap..

I think u got to take the fuelrail off but idk how

**Bert** · 09-14-2009, 16:47

You don't have to take the fuel rails off. Just remove the coil packs and the plugs can be removed. Make sure you blow any debris out of the holes before pulling the plugs. Also when installing them torque them properly. Too tight and they can strip out when the cyl, head stretches, too loose and they can blow out.

BlackHero99 · 09-14-2009, 18:17

Thanks for the help. i Did all that.. Quick question how do i kno if i need to replace a plug coil? I just replaced all the plugs and its still not runnin rite. it seems all the power is gone. and when im under 65mph the car starts to shake and the idel is not smooth like it used to bee..

**Bert** · 09-14-2009, 19:37

You could pull one injector wire at a time until you find one that doesn't change the RPM or miss. That will probably have a bad coil pack. There could be more. Then change that coil with one that made a difference in the RPM to see if the miss changes to the other cyl. to prove it is the coil for sure. That would prove that the coil needs replacing.