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Old 08-13-2013, 01:47 AM   #1
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High RPM Hesitation

I just replaced my spark plugs and cables on my 2000 Z28 yesterday and gapped them at .060 according to my owners manual. I know GM has changed the gap for spark plugs and all that stuff to .040. My car idles ok though. There has been hesitation since before I changed my plugs and cables and thought it would fix it. After I start to shift into 4-5-6 gear is when the problems occur and the car holds back until I give it full throttle, then it stops. Same thing is happening after I changed everything and the computer is saying it's either a misfire on cylinder #6 or a oxygen sensor which might make sense about the sensor due to the misfire on that cylinder. I am going to change that plug out for a new plug and see if it does the trick. If not what are your guy's suggestions? Any similar experiences?
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Old 08-13-2013, 09:39 AM   #2
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Re: High RPM Hesitation

Check for a broken plug, and make sure the wires are all seated correctly. I think the wires click twice when you are seating them on the coils.

11 Silverado - No times yet.
99Z28 - 11.91@118.5. 403 L76/L92 with street tires and launching with the traction control.

Last edited by WhiteHawk; 08-13-2013 at 09:42 AM.
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