All the difference in the world!

[Andrew M. Frankli]

Had one bad GP, truck was almost impossible to start. Just picked up a set of 8 from Ford dealer (Beru units) , replaced the one bad one, and the truck fired up in 3 seconds in 8 degree weather with no block heater! WOW!! Turns out one bad plug confuses the controller and won't let the system cycle long enough - Thanks for forum help. --Andy

 

[hesutton]

Yup it sure can make more trouble that you'd think.

Heath

 

[HammerDown]

Yep, one dead GP can shorten the burn-time.