Spark Plug Experience

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Sep 23, 2004 | 11:43 AM

FAB150

Thread Starter

Senior User

Joined: Jun 2004

Posts: 395

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From: Fairmont, WV

Spark Plug Experience

Has anyone had a good experience with Bosch plugs in this model truck?

Sep 23, 2004 | 06:45 PM

triton_2002

Postmaster

Joined: Aug 2003

Posts: 2,977

Likes: 1

From: South Texas

From what I've heard the stock replacements are the best on these engines.

Sep 24, 2004 | 12:59 PM

JH6

Senior User

Joined: Jul 2004

Posts: 221

Likes: 1

bosch is the worst plug you can put in a mod motor.

Stick with stock motorcraft platniums or coppers.

Sep 29, 2004 | 01:42 PM

MitchPeters

More Turbo

Joined: Feb 2003

Posts: 521

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From: Alexandria, Ohio

After going through 2 sets of Bosch plugs and chasing misses after only a few thousand miles I went back to Motorcraft plugs. No more missing.

Jan 16, 2005 | 01:31 PM

mattd17

Fleet Mechanic

Joined: Dec 2004

Posts: 1,365

Likes: 6

From: Ketchikan, AK.

i have a 99 f250 sd with the 5.4. when i purchased the truck, it had 76000 miles on it, and it started missing just after i bought it (go figure). well, i ended up changing the # 4 cop and all the plugs with bosch platinum. i have always liked the bosch plugs, but after that the idle just didnt seem quite right, and i read a lot about the mod engines.... so i went out and just bought a set of motorcraft platinum and i am going to change them out today.... i hope i have the same results that you had.

Jan 22, 2005 | 06:24 PM

LilBlackCoupe

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Joined: Jan 2004

Posts: 141

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From: Rockford, IL

Motorcrafts or Autolites

Jan 22, 2005 | 11:56 PM

LxMan1

Moderator

Joined: Dec 2001

Posts: 22,436

Likes: 17

From: Louisville,Ky.

After having to replace the 5.0 in my dad's 89 F150 because the platinum center fell out of a Bosch Platinum plug and wedged in-between the piston and cylinder wall leaving a deep scar down the cylinder wall causing heavy blow-by, I'll never use them again.
As stated above, Either Motorcraft or Autolite double platinums are the only way to go!!