.030

[Sho_Ride]

I changed the plugs on my 2011 to the motorcraft mp-534's last night. It wasn't too extremely hard but not easy either, Front three should take about 30 minutes but back row about 1 hour because of all the things that need to be moved out of the way. The old ones were platinum tip and gapped at about .044. I haven't looked it up but I thought they should have been .035.

I am still waiting for the 160 thermostat, 3 bar map and LMS tuner to arrive but I was wondering if I could safely drive it with the new plugs @ .030 until they come in. Does anybody out there in SHOlala land know if it safe?

 

[Jeff2017]

Should be fine.

 

[Johnbigdog]

Spec is .032 to .038.

I think your safe as you usually close the gap when starting to tune to compensate for the higher combustion pressures.

 

[ridered74]

If you don't already have some, get some wobble extensions of varying lengths. Those made it a good bit easier than the first time I changed them without having those. I don't physically remove anything at all when doing plugs. I'm no mechanic, but I can do all six in under an hour.