spark plug info
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Junior Member
Joined: May 2010
Posts: 1
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spark plug info
1999 Ford F-250 Superduty 5.4L 4x4 ext. cab
Its a 2 valve and i know 3 valve had spark plug problems. I use E3 sparkplugs in my other vehicles and they work great. I would like to use them in my truck but i dont want the dropout plug issue to happen. Should i use anitseize on the threads or not? It has Autolite XP Iridiums in there now and they were put in by previous owner with no rececipt and i dont know how old they are. Id like to improve my gas mileage like my other vehicles with the E3 plugs and back them up with new ACCEl coils. What do i do?
Its a 2 valve and i know 3 valve had spark plug problems. I use E3 sparkplugs in my other vehicles and they work great. I would like to use them in my truck but i dont want the dropout plug issue to happen. Should i use anitseize on the threads or not? It has Autolite XP Iridiums in there now and they were put in by previous owner with no rececipt and i dont know how old they are. Id like to improve my gas mileage like my other vehicles with the E3 plugs and back them up with new ACCEl coils. What do i do?
Senior Member
Joined: Jan 2010
Posts: 111
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i just researched all pulugs on this forum for my 2001.
Either use Ngk iridiums or Motorcraft plugs only!! Autolites are the worst and other plugs have caused misfires
Accel coils are not good and neither are granatelli, they say to use motorcraft which are $500 or Globals which are $75, everyone loves the cheap global-automotive coils
http://cgi.ebay.com/ebaymotors/NEW-I...Q5fAccessories
Either use Ngk iridiums or Motorcraft plugs only!! Autolites are the worst and other plugs have caused misfires
Accel coils are not good and neither are granatelli, they say to use motorcraft which are $500 or Globals which are $75, everyone loves the cheap global-automotive coils
http://cgi.ebay.com/ebaymotors/NEW-I...Q5fAccessories
Senior Member
Joined: Dec 2006
Posts: 43,530
Likes: 817
From: Joplin MO
Nickel plated spark plugs, 28 ft/lb dry.
You aren't going to improve anything over stock Motorcraft plugs an OEM quality coils - unless you have a heavily modded engine. There's no way you are going to get decent gas mileage out of that heavy a truck with that size engine.
You aren't going to improve anything over stock Motorcraft plugs an OEM quality coils - unless you have a heavily modded engine. There's no way you are going to get decent gas mileage out of that heavy a truck with that size engine.
