OEM, AC/Delco spark plugs. The newest part number AC Delco is an iridium plug and is the perfect plug for the I6 4.2 litre
The 2004 Trailblazer does not have plug wires. It has a coil pack per cylinder that connects direct to the spark plugs.
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.
If the car will not start...the spark-plug is bad.
AC Delco iridiums
Huh? This would be the 5 cylinder engine? No # 6 spark plug? Or the V8? What year vehicle? Need more info, sorry
The second spark plug is misfiring. Could be the coil right above the spark plug.
Bad plug or something is misassembled.
Your spark plug manufacturer would recommend your replacement schedule.
Spark Plug Gap = 0.060 for both S-10 & Trailblazer vehicles 1996-2005.
A swivel on the end of a spark plug socket and then an extension on that will get it out.
removed plug wire, remove spark plug, gap new plug to spec. and reinstall. Repeat for every other cylinder. Would recommend replacing plug wires, cap and rotor when replacing spark plugs.
The 2005 Chevy Trailblazer has Coil-On-Plug ignition coils so there are 6 "coil packs". Each one is mounted on top of the spark plug.
Listed in your owner's manual and under the hood on a placard.
follow the plug wires they are on the heads
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.
If you know that there is spark at the distributor cap then I would think it would be bad spark plug leads.
recommend .030 "
That's the forward-most spark plug on the passenger side.
A drain plug for a spark plug? Now why would there be? What would you drain from a spark plug.... the spark? If you're referring to a plug for the spark plug socket, I'm sure you could find something that would fit that would keep out debris while you let you engine sit without plugs. (Why??)
bad spark plug wire.
NGK recommend 1.1mm!
.043, but if you get the A/C Delco you should not have to gap them; they are preset.