Spark Plugs

37chief · Jan 12, 2019

I am going to replace the plugs in my 05 F150. I will probably go with the stock Motorcraft plugs. Are the platinum really that much better? Stan

grizz02 · Jan 12, 2019

yes mine have 130k and still going

2x4 · Jan 13, 2019

Texasmark1 · Jan 13, 2019

My 2011 Silverado came with them as standard equipment. Owners manual suggests changing at 100k.

rrc300 u · Jan 13, 2019

Does the 05 have the two piece plugs? Is it a 5.4? I did mine and broke a few plugs it was no fun but not an impossible task. Make sure to have the removal tool on hand. The best I can say is to crack the plugs loose and put some sea foam down the hole and let it set overnight, next rock the plug back and forth till it's free from the carbon. Good luck.

David G · Jan 13, 2019

I know you are itching to replace those plugs, but have you tried moving the coil packs and see if problem goes with it?

buickanddeere · Jan 13, 2019

a dab of anti seize on the threads ?

M-MAN · Jan 13, 2019

I like the double platinum. Twice the life of regular plugs. Bad thing is people abuse them by running them too long. The more miles you go the wider the gap gets. Sure it still runs good until it kills the coil. Then they change a couple coils and wait for the next one to fail. Finally get around to changing the plugs after wasting hundreds on coils. Brilliant! Manufacturers tell you 100,000 miles. Pull them at 80,000 and check the gap. You'll see it's too wide even then.

docmirror · Jan 13, 2019

(quoted from post at 07:27:39 01/13/19) Does the 05 have the two piece plugs? Is it a 5.4? I did mine and broke a few plugs it was no fun but not an impossible task. Make sure to have the removal tool on hand. The best I can say is to crack the plugs loose and put some sea foam down the hole and let it set overnight, next rock the plug back and forth till it's free from the carbon. Good luck.

Please follow this advice. Get the plug loose, turn it out maybe 3/4 turn, and soak down with Sea foam or another penetrating oil and wait overnight to remove. Plenty of head shave been ruined by damaged plug threads on stubborn spark plugs.

I am not a fan of platinum, but some cars benefit.

Spark Plugs

37chief

Well-known Member

grizz02

Well-known Member

2x4

Well-known Member

Texasmark1

Well-known Member

rrc300 u

Member

David G

Well-known Member

buickanddeere

Well-known Member

M-MAN

Well-known Member

docmirror

Well-known Member

Similar threads