Question about 2002 GMC Envoy

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Changing plugs question

What tourge should be used on tightening plugs on an 02 envoy, and what should the gap be.

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15-20 inch pounds

Posted on Jun 21, 2009

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Where are my spark plugs located in my 02 Gmc envoy?


Attached is a diagram of where the plugs and coilpacks are located, you need to remove the air intake resonator box to access this area. Plugs should be changed around 100K miles. Use only AC Delco 41-103 Iridium plugs. #1 is the coilpack and #5 is the spark plug



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Spark plug gap specs for 2002 envoy SLE


Gap should be around 0.043"
Also, make sure to use only AC Delco 43-103 plugs, these are the OEM plugs and work best in these engines.

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Need spark plug gap and tourge settings on heads


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What is the gap for a spark plug on a 2004 gmc envoy?


.040 to .044" would be normal. The gap should listed on the emission sticker under the hood. Make sure you use the O.E. AC/Delco plugs. This engine will run on those the best!

Mar 20, 2011 | 2005 GMC Envoy Xl

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Finding spark plugs and changing them on a 2002 gmc envoy sle


On he very top of your engine, there will be six coil pack, they all look the same, from front to rear of engine, remove 10mm bolt, disconnect elec. harness, pull coil pack out, spark plug will be in there, do one at a time, this is the spark plug gap .044"

Sep 16, 2010 | 2002 GMC Envoy

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Po305-cylinder 5 misfire


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May 09, 2010 | 2004 GMC Envoy

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What is the spark plug gap for the envoy??


they come pre gapped with collars to prevent the electrodes from getting bent .platinum and iridium plugs will have the surface damaged if you were to adjust them with a feeler gauge,like old plugs had to be gapped. ac or ngk plugs come pre gapped in the box.

Aug 22, 2009 | 2003 GMC Envoy

2 Answers

How to replace sparl plugs on a Jeep Cherokee?


Hello, I hope this info helps...(subytech1)...REMOVAL
In this engine, each individual spark plug is located under each ignition coil.

  1. Prior to removing spark plug, spray compressed air around base ofignition coil at cylinder head. This will help prevent foreign materialfrom entering combustion chamber.
  2. On this engine each individual ignition coil must be removedto gain access to each spark plug. Refer to Ignition CoilRemoval/Installation.
  3. Check condition of coil O-ring and replace as necessary.
  1. Inspect spark plug condition. Refer to Spark Plug Conditions.
CLEANING
Theplugs may be cleaned using commercially available spark plug cleaningequipment. After cleaning, file center electrode flat with a smallpoint file or jewelers file before adjusting gap.

CAUTION: Never use a motorized wire wheel brush to clean sparkplugs. Metallic deposits will remain on spark plug insulator and willcause plug misfire.

ADJUSTMENT

Setting Spark Plug Gap - Typical
Check spark plug gap with a gap gauge tool. If the gap is not correct,adjust it by bending ground electrode. Never attempt to adjust gap bybending center electrode.

INSTALLATION

CAUTION: This engine is equipped with copper core groundelectrode spark plugs. They must be replaced with the same type/numberspark plug as the original. If another spark plug is substituted,pre-ignition will result.

Special care should be taken when installing spark plugs into cylinderhead spark plug wells. Be sure plugs do not drop into plug wells asground straps may be bent resulting in a change in plug gap, orelectrodes can be damaged.

Always tighten spark plugs to specified torque. Over tightening cancause distortion resulting in a change in spark plug gap or a crackedporcelain insulator.

  1. Start spark plug into cylinder head by hand to avoid cross threading.
  2. Tighten spark plugs to 27 Nm (20 ft. lbs.) torque.
  3. Before installing coil(s), check condition of coil O-ring andreplace as necessary. To aid in coil installation, apply silicone tocoil O-ring.
  4. Install ignition coil(s). Refer to Ignition Coil Removal/Installation.

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1 Answer

I am changing the spark plugs on my 2002 GMC Envoy. I need to know what the gap will be


.043. Good luck. Thanks for rating my response and for using FixYa!

Jun 28, 2009 | 2002 GMC Envoy

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