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Cobra Forums
2013-14 Shelby GT500
Tune up
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<blockquote data-quote="Chancey" data-source="post: 16315867" data-attributes="member: 194344"><p>For the life of me I don’t understand how if we dont change the plugs every 3-4,000 miles these 5.8 shelbys start running less than special. I forget each time until it starts barely stumbling/surging a bit off of idle and then remember the plugs. The NGK TR6’s or 7’s both seem to do it. I am picky to a fault and really enjoy working on my car, so it doesn’t really bother me. No better way to see how the motor is doing inside too. Some say they go 10,000, or more with no issues. I am in the group that has to change them out every 3,000 or so to keep her running just right (or to my satisfaction) at least. Amazingly they look good and the gap hasn’t changed each time I pull the “old” ones either. Maybe its because I drive the piss out of it as a daily?</p></blockquote><p></p>
[QUOTE="Chancey, post: 16315867, member: 194344"] For the life of me I don’t understand how if we dont change the plugs every 3-4,000 miles these 5.8 shelbys start running less than special. I forget each time until it starts barely stumbling/surging a bit off of idle and then remember the plugs. The NGK TR6’s or 7’s both seem to do it. I am picky to a fault and really enjoy working on my car, so it doesn’t really bother me. No better way to see how the motor is doing inside too. Some say they go 10,000, or more with no issues. I am in the group that has to change them out every 3,000 or so to keep her running just right (or to my satisfaction) at least. Amazingly they look good and the gap hasn’t changed each time I pull the “old” ones either. Maybe its because I drive the piss out of it as a daily? [/QUOTE]
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2013-14 Shelby GT500
Tune up
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