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Author
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Topic: Hesitation after changing plugs...96 gt
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BruhBrahBrad
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Member # 9497
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posted
 
 
Im having big problems with my car after giving it some new sparkplugs. It hesitates really bad, and at idle it makes popcorn noises through the exhaust. I originally gapped the plugs at .054, and after a few times of checking that, i decided to check the old plugs gaps, and most of them were .045. Tried that on the new plugs and still no dice. I drove it for a few minutes, It gave me a check engine light, but I cant check it because I have no OBD2 reader and apparently Kragen cant check it. Maybe I should try autozone? The plugs im using are autolite 764 coppers.
And the thing that gets me is that the car ran fine with one of the plugs I pulled out having a damn near closed gap, and 3 covered in oil...Im assuming I need new valve seals on my drivers side head, but im doing a 4v swap, If I decide to keep this car much longer.
[ July 15, 2010, 03:59 AM: Message edited by: Mach 5oh ]
Posts: 1241 | Registered: Sep 2009
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Rigo5.0
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Member # 5247
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posted
Sounds odd. My brother had similar spark plug issues on his GN, and solved his problem by going with a whole new set. Try a set of NGK TR6s and see what happens.
[ July 15, 2010, 05:47 PM: Message edited by: Rigo5.0 ]
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91 5.0 [331|T56]
87 Grand National
02 Z06
08 Challenger SRT8
13 Shelby GT500
00 Lightning
14 Camaro SS
Posts: 1454 | From: Kansas City | Registered: Jan 2005
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nitrous_bob
CAFords OG
Member # 77
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posted
2 things hit me right away...
#1 did you use platinums or any other non copper stock style plug ? if yes... ditch them and gap the stockers at .048" (yes i know stock gap is .052" ... it sux)
#2 check ALL plug wires at dizzy and plug. if they don't "snap" on... they are not on and spark has to jump and is weak and not firing good
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5.0 OG since 1990
Posts: 1402 | From: st clair shores MI | Registered: Nov 2000
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copcar
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Member # 10113
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posted
It will be very difficult for the op to check anything distributor related on a 96 GT, but yes, make sure the plug wires are snapped down properly on the caps.
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12.37@ 109.34.NA 894DA Old Nitto 555 DR's Gt40 irons. B cam/1.7's, All emissions equipment on the car, stock air box. UPR catted X pipe.
Posts: 485 | Registered: Jun 2010
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BruhBrahBrad
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Member # 9497
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posted
I fixed it, it turned out to be that since my number 4 cylinder didnt wanna thread in easily..a lil rust in there? Any ways i put wd40 on the plug to get it to thread easier, and that worked but I believe it fouled out my plug...I put a old one in and its good to go now.
Posts: 1241 | Registered: Sep 2009
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