Join Date: May 2004
location: Morganville, NJ
Thanked 22 Times in 18 Posts
Nearly all Fords had only 4 plugs per hole.
This came to a momentous pile in the mid 90s to 2003 when Lightnings like mine blew out plugs, and required cylinder heads. This is what made Time-Sert a godsend, they came out with an on the vehicle fix, that doesn't require heads as long as a butcher hasn't gotten into the motor.
Then it started to happen to all modular motors during that time, as I'd guess an issue at the assembly plants occurred. The plugs were blowing out as early as 30k. I still have to put new plugs in my L, but am lazy, and it's a huge pain to change them.
Then it started going around to nearly ALL of their cars. Usually after someone changed plugs. The torque that Ford specified wasn't enough on the taper seat plug. I have never had a plug blow out on a Ford that I've replaced plugs on. But I do tighten them a bit more than the 11 ftlb that Ford states is all that's needed.
In 2003, Ford began updating many of their engines with the more typical 8 threads per hole.
And we won't even go to the '04 and up 3 valve V8/V10 and what happens to those plugs. Makes blowing out plugs much more preferable.
Sapphire blue '04 V6 6 speed w/ full HFP, comptech ss, momo shadow, TL-S 27.2h/20 bars, intake spacer, retro chrome MH1 HIR2 highs, hella DE fogs, EBC Ultimax, subwoofer/amp, infinity rears, HD Radio, aux adapter, navi conversion.
Vermilion 1999 SVT F150 Lightning, Sylvania/Visteon Xenarc HID headlamps, '01 L turn/marker lamps, PIAA fogs, '01 up Bilstein shocks, all Pioneer speakers, Clarion subwoofer. All Redline fluids.
Silverstone 2003 Honda S2000, bone stock