I wanted to confirm the spark plugs for a 2009 CX-9 GT (2wd). Since this is a Ford engine with Ford parts everywhere, and Mazda had a delay to get spark plugs, I used the numbers off the plugs to get them from Ford directly.
My plugs show: AYFS 22FM (with 8L sideways, don't know what this number is)
Ford gave me:
sp 411 (which have the same number across them). But are these 100% exact???
I gaped them to .051 per owners manual. I am trying to chase down cold start up detonation (goes away when it hits normal op temp). Want to make sure these are not hotter than required. But I did have the detonation before the plug change. Gap on 100K miles for plugs was .080 (crazy!!!).
Thanks.
My plugs show: AYFS 22FM (with 8L sideways, don't know what this number is)
Ford gave me:
sp 411 (which have the same number across them). But are these 100% exact???
I gaped them to .051 per owners manual. I am trying to chase down cold start up detonation (goes away when it hits normal op temp). Want to make sure these are not hotter than required. But I did have the detonation before the plug change. Gap on 100K miles for plugs was .080 (crazy!!!).
Thanks.