Hootsworth

Hey Everyone.

I recently bought an 07 F150 FX2, used with 135k miles on it. Looking at the service records it appears that all the spark plugs were changed at the 80k mark with SP-515 plugs. So, we're about 50k miies from the last set of spark plugs.

I'm looking to change them in the coming months to hopefully catch them before too much carbon build up causes any issues.

When I change the plugs, should I also change the Ignition Coils? I'm not experiencing any sluggish acceleration or anything, just wanted to see if it's recommended to go ahead and take care of those or just simply not 'fix what isn't broke".

Rick's 06

In my opinion I would not change the coils unless they begin to fail. They may last forever, but if not, deal with them when they fail. I'd also run on your plugs longer. Every time you change your plugs there's a chance they'll break, so why increase your chances of breaking them by changing them out more then you have too. When you see a change in idle and overall performance, it's time, but until then, I'd keep on truckin.

techrep

iTrader: (1)

I would change the boots and springs for sure...

Velosprout

Change upon failure. You will know with a misfire.

grss429

Change plugs, boots and springs

Summers22

iTrader: (2)

I also suggest new plugs, but as mentioned, just change the boots and springs on the coils. Cut a couple paper type finger nail files in half long ways and file the copper contact down in the nipple of the COP and you will be fine. No need to change out coils if they arent throwing codes or mis-firing.

Summers22

iTrader: (2)

Oh and post some pics! I also have a 2007 FX2!

Hootsworth

Here it is! Edit: Let me try that again..

bwFX42006

Plugs are cheap, I'd change them asap. Amazon actually sells a pretty cheap set of plugs with all new coil packs. All Motorcraft parts. I think the bill came in around $425 free shipping, but I haven't had one issue since I changed them and its been almost 6 months. I know it's just cheaper to change the boots and springs, and it comes down to personal preference, but I had a little better piece of mind knowing that all the COP's were brand new.

Martian

^^ buy the plugs cheaper individually (about $88 total) and buy the $47 pack of 8 coils on Amazon