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How to change spark plugs in 05 g6 - 2005 Pontiac G6

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The G6's spark plugs are located under the plastic cover of the engine compartment for the 3.5 V6, under the spark plug wire boots (the plastic ends of the wires you plug on top of your spark plugs). Once you get the plastic cover off you cant miss them, just follow the plug wire cables. They are easy to change if youremember to do one at a time, (since order does matter, don't mix up the cables!). Also don't over tighten them, expensive damage will be caused. Its best to borrow a torque wrench and read the new spark plug box instructions for proper tightness.
Generally if you have trouble finding spark plugs, it might be best to let someone else do this one rather than risk the damage. But there is no better way to learn than by doing it yourself.
if for some reason you dont do them one at a time which is a bad thing to do. theFiring Order is 123456
also the
Spark Plug Gap for the 3.9L is
1.00 mm
0.040 in

Spark Plug Gap for the 3.5L is
1.52 mm
0.060 in

if you require further assistance please let me know and i will be glad to assist you from there. If this helped you please feel free to rate the solution. Thanks -Midwest-tek

Posted on Aug 27, 2010

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SOURCE: Changing rear spark plugs on an 05 Bonnevile V6

No special tools, however the hard part will be getting the plug wires off without pulling the inner contact apart. Rotate the boots on the plugs before trying to remove the wires.

Posted on Jul 02, 2009

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