Spark Plug Replacement

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01-13-2016, 09:58 AM

rocky321

2nd Gear Member

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Join Date: Jun 2008

Posts: 211

Spark Plug Replacement

08 GT black coils. What are the one piece replacment plugs being used for the Motocraft 2 piece plugs?

01-13-2016, 08:46 PM

3rd Gear Member

Join Date: Sep 2006

Location: PA

Posts: 750

Champion, 7989 is what I used. I replaced mine years ago. No problem with the Champs.

01-13-2016, 10:13 PM

Goldenpony

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Posts: 3,319

I have been driving with the #7989 Champions for over 100K miles. No problems. Don't have to worry about that sickening "snap".

01-13-2016, 11:28 PM

808muscle

5th Gear Member

Join Date: Oct 2009

Location: Maui

Posts: 4,752

I just swapped my supercharged motorcraft H20's last weekend. They had been in the car for 5 years. I was nervous even though I had installed them with some nickel antiseize but they all came out fine.

01-22-2016, 09:39 AM

BrianK

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Join Date: Aug 2012

Location: Calgary, Alberta, Canada

Posts: 155

I also installed Champions 3 years ago. No problems at all with codes or acceleration issues and no sick feeling when I take them out. I did mine myself with no breakage. Take your time and follow the TSB.

01-25-2016, 12:04 PM

ghunt

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Join Date: Oct 2011

Location: WV

Posts: 750

I used the E3 one piece plugs, no issues so far.

01-25-2016, 12:15 PM

Goldenpony

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Plugs

As I said, I've been happy with the Champs, but next time I might try the one piece MSD plugs.

01-25-2016, 01:21 PM

Derf00

Gentleman's Relish

Join Date: Feb 2005

Location: AZ

Posts: 13,090

Yep, same Champion spark plugs with 60K miles and about 6 1/2 years worth of wear, no problems and I have taken a few out randomly over time to check for wear and such.

02-10-2016, 12:11 PM

BrianK

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Join Date: Aug 2012

Location: Calgary, Alberta, Canada

Posts: 155

Strange to have an '08 with the 2 piece plugs. I thought they 'fixed' the problem in late '07 but the black COP's indicates the 2 piece design I believe.