Listed in your owner's manual and under the hood on a placard.
A 2004 Chevrolet Trailblazer that has a 4.2 liter engine will have a spark plug gap of .044 inches. The best spark plugs for this vehicle are iridium spark plugs.
.043
is 54 gap for a spark plug mercury mountanier 2002 4.6
Spark Plug Gap = 0.060 for both S-10 & Trailblazer vehicles 1996-2005.
The spark plug gap is .050 inch.
The spark plug gap on a 2002 Mazda 626 should be set at .044 inches. A new spark plug will come preset from the factory.
0.060 Plug gap.
Following information was found by a Google search on 12 July 2008. The posting was made on 8-8-2006 to a user forum at forums.trailvoy.com here are GM's specifications for spark plug gap for 2002 trailvoys. what year and model is your truck? ~2002 Envoy & TrailBlazer 2WD & 4WD~ Spark Plug Torque 18 N.m Spark Plug Gap 1.27 mm Spark Plug Type AC 41-965 Spark Plug 17-23 N.m ***Updated my own posting after working on my Trailblazer*** The 18 NM torque is stamped onto the top of the engine, visible after removing the air box.
.043, but if you get the A/C Delco you should not have to gap them; they are preset.
the spark plug gap is 0.7 to 0.8 for champion plugs
ACDelco #41-601 conventional spark plug gap .060"
My 2002 Ford Focus ZX3 has a spark plug gap of .050" (1.3mm).