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06-25-2009, 09:35 PM
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The One And Only !!!
Join Date: Jan 2007
Location: Hole in the woods Florida
Posts: 4,567
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Skipping Trailblazer ?
Hey All,
My brother has a 05 Trailblazer with the 4.2 L6, It started running rough at 65,000 so we replaced the plugs. This has the coil over each plug, It ran better after the plug change but still has a distinct skip like one plug isn't firing. Question; Can I remove all the coils from the plugs (to prevent engine start-up) and test each coil for spark with my adjustable spark tester without causing any computer damage ? Thanks for any insight !
__________________
93 Jeep XJ 88 Buick La Sabra Toys; 88 TA-GTA in the works.... 97 GMC Ext. Cab 502 Crate 5 Spd......Sucks Gas But Haulz Azz !  The primary function of an Engineer is to make it difficult for the Fabricator and impossible for the Mechanic. "Why go out preserved when you can go out beat up, worn out, sliding in sideways screaming, Holy Sh!t What A Ride" !!!
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