greatplainsturf
Member
I know some versions of this engine have the much discussed issue with changing the spark plugs. What about my 2011 with 100k miles. Can I just change them like the good ole days without fear of issues?
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So no special instructions at all?
No, but if you're really fishing .... Blow out the spark plug wells with compressed air before attempting to remove the plugs. Make sure the engine is cool before pulling them. Up to you if you want to use (just a little) anti-seize on the plugs; some guys prefer to install dry. I use a little anti-seize because I know I'm going to be the one pulling those plugs out again. Also up to you if you want to use Motorcraft plugs, but the 5.4 3V has a reputation for being fussy about plugs so I did. Don't buy them from the dealer. You can get the SP-509 plug from 101 places online. I paid ~$55 for a set of 8 from Advance with a coupon. Inevitably, someone here will tell you to replace the COPs but if you're not having a problem I suggest leaving them alone. They are not a maintenance item despite popular belief and I think it's pure lunacy to spend ~$300-400 just for the heck of it. The whole job takes about 2 hours. Add time if you're taking a few moments to resist the urge to throw your wrench through the windshield after pulling a stubborn plug in the back.
I do agree with you on this. However, Being you have to remove the cops and boots to get to the plugs I would suggest that the boots also be replaced. And use some dielectric grease when installing new boots
No, but if you're really fishing .... Blow out the spark plug wells with compressed air before attempting to remove the plugs. Make sure the engine is cool before pulling them. Up to you if you want to use (just a little) anti-seize on the plugs; some guys prefer to install dry. I use a little anti-seize because I know I'm going to be the one pulling those plugs out again. Also up to you if you want to use Motorcraft plugs, but the 5.4 3V has a reputation for being fussy about plugs so I did. Don't buy them from the dealer. You can get the SP-509 plug from 101 places online. I paid ~$55 for a set of 8 from Advance with a coupon. Inevitably, someone here will tell you to replace the COPs but if you're not having a problem I suggest leaving them alone. They are not a maintenance item despite popular belief and I think it's pure lunacy to spend ~$300-400 just for the heck of it. The whole job takes about 2 hours. Add time if you're taking a few moments to resist the urge to throw your wrench through the windshield after pulling a stubborn plug in the back.
The problem with anti-sieze is it can leak down onto the electrode and foul the plug. That's why most don't use it.