Are NGK PFRG-11 the right type of sparkplug for my Z? I heard that I needed NGK PFR5B-11B are the ones that are specified. I brought my car into nissan for a purge valve and solenoid.So they fixed it since thats what the check engine light came up with. They also did a timing belt and water pump and changed sparkplugs. I got the car back it was idling rough and a few days later the check engine light came on again and they say that i need a engine control module. could it be possilbe that they used the wrong sparkplugs that would make the car run lean and start to hesitate after 40mph and make the check engine light go back on?
Thanks, Vinny
Follow Ups
NGK sparkplugs PFR6G-11 for a 1996 TT? - zx198820:09:31 12/03/11