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Discussing Car Bucks in the 96-98 Forum. I have a 98 GT and when i just give my car a lttle gas ...

       

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Old June 15th, 2007, 11:26 AM   #1
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1998 Mustang GT
 
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Car Bucks


I have a 98 GT and when i just give my car a lttle gas its bucks pretty bad, it doesnt do it all the time just when it feels like it... i have replaced coil packs, wires, and plugs so i dony know what else i can do... i also cleaned out my plenum and no help... any suggestions?
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Old June 15th, 2007, 12:09 PM   #2
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1996 Mustang GT
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Do you have a CEL?
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We expect shit to break, look foward to realizing exactly when it is happening, and than obsess about dropping plenty of cash to rebuild stronger, so we can try to run it hard as hell and break again. We are sick individuals.
 
Old June 15th, 2007, 12:35 PM   #3
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Are you sure you gapped the plugs correctly?
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1998 GT
FRPP: 4.10s, Alluminum d/s
STEEDA:upper/lowers, springs, cc plates, tri-ax
TOKICO: Adjustable shocks
SPEC: alluminum flywheel stage two clutch
K&N: Intake
Screamin Demon ignition
 
Old June 15th, 2007, 12:50 PM   #4
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1998 Mustang GT
 
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Location: Scotia , NY
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i dont know what a CEL is and yea i just bought plugs that fit my car... but it has been doing this for awhile and i dunno!? it usually does it after i am rough on it, but then sometimes it just does it to piss me off...
__________________
Quit smilin your drivin a camaro!!

http://i210.photobucket.com/albums/b...iewsingle1.jpg

PI intake
March Pulleys
18x9 Black Bullit rims
msd coil packs
Stage 3 XTD King Cobra Clutch
Soon To Come:

O/r H-Pipe
 
Old June 15th, 2007, 01:27 PM   #5
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98 GT
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Just cause they fit, doesn't mean they are gapped correctly take one of them out and check the gap. Does it buck under a low rpm load?
__________________
1998 GT
FRPP: 4.10s, Alluminum d/s
STEEDA:upper/lowers, springs, cc plates, tri-ax
TOKICO: Adjustable shocks
SPEC: alluminum flywheel stage two clutch
K&N: Intake
Screamin Demon ignition
 
Old June 15th, 2007, 06:26 PM   #6
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1998 Mustang GT
 
Join Date: Apr 2007
Location: Scotia , NY
Posts: 76
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yea but its more about gas... if i just give it gas it bucks but if i give it a good amount of gas it is fine and pulls good so idk
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Quit smilin your drivin a camaro!!

http://i210.photobucket.com/albums/b...iewsingle1.jpg

PI intake
March Pulleys
18x9 Black Bullit rims
msd coil packs
Stage 3 XTD King Cobra Clutch
Soon To Come:

O/r H-Pipe
 
Old June 15th, 2007, 06:28 PM   #7
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1998 Mustang GT
 
Join Date: Apr 2007
Location: Scotia , NY
Posts: 76
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what should the gap be? and what do i use to check it? sorry for all the questions i just am pissed off with this whole bucking problem
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Quit smilin your drivin a camaro!!

http://i210.photobucket.com/albums/b...iewsingle1.jpg

PI intake
March Pulleys
18x9 Black Bullit rims
msd coil packs
Stage 3 XTD King Cobra Clutch
Soon To Come:

O/r H-Pipe
 
Old June 15th, 2007, 06:55 PM   #8
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056....
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fraziers transmission service..
 
Old June 18th, 2007, 11:29 AM   #9
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1998 Mustang GT
 
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.056 or .054?
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Quit smilin your drivin a camaro!!

http://i210.photobucket.com/albums/b...iewsingle1.jpg

PI intake
March Pulleys
18x9 Black Bullit rims
msd coil packs
Stage 3 XTD King Cobra Clutch
Soon To Come:

O/r H-Pipe
 
Old June 18th, 2007, 11:45 AM   #10
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I have had good luck at .052", I was told to try it and have now seen a few books that list it at .052". Also check all your wires, one may not be on all the way causing it to jump a gap to reach the plug.
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Old June 18th, 2007, 12:57 PM   #11
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1998 Mustang GT
 
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ok i check the wires but im almost positive it has to do wit the gap beacud=se the wires are all new and i snugged them all up and used the deelectric grease on the boots
__________________
Quit smilin your drivin a camaro!!

http://i210.photobucket.com/albums/b...iewsingle1.jpg

PI intake
March Pulleys
18x9 Black Bullit rims
msd coil packs
Stage 3 XTD King Cobra Clutch
Soon To Come:

O/r H-Pipe
 
Old June 18th, 2007, 01:22 PM   #12
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MustangMatt96GT's Avatar
 
1996 Mustang GT
12.91@105.29 @ 5800 FT
 
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Make sure that the plug boots are pushed on to the plugs completely! Also do you have a CEL? Check Engine Light!
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We expect shit to break, look foward to realizing exactly when it is happening, and than obsess about dropping plenty of cash to rebuild stronger, so we can try to run it hard as hell and break again. We are sick individuals.
 
Old June 18th, 2007, 01:52 PM   #13
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Have you checked your injectors? One could be clogged...
 
Old June 18th, 2007, 10:34 PM   #14
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i do have a check engine light but it was for my O2 sensor and it goes on and off and the injectors have been cleaned, i put in fuel injector cleaner every 3,000 miles but i will double check my plug boots and if not just get new plugs...
__________________
Quit smilin your drivin a camaro!!

http://i210.photobucket.com/albums/b...iewsingle1.jpg

PI intake
March Pulleys
18x9 Black Bullit rims
msd coil packs
Stage 3 XTD King Cobra Clutch
Soon To Come:

O/r H-Pipe
 
Old June 18th, 2007, 10:51 PM   #15
I Post Entirely Way Too Much
 
MustangMatt96GT's Avatar
 
1996 Mustang GT
12.91@105.29 @ 5800 FT
 
Join Date: Dec 2006
Location: Lakewood, CO
Posts: 7,292
Default

I say that you go and get that code read, because IMO it is probably a misfire on one of the cylinders and then you can figure out which one to fix!
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We expect shit to break, look foward to realizing exactly when it is happening, and than obsess about dropping plenty of cash to rebuild stronger, so we can try to run it hard as hell and break again. We are sick individuals.
 
Old June 19th, 2007, 03:05 AM   #16
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98 GT
14.60 @ 94.78mph
 
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Location: Scranton, PA
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If you have stock coil packs I would gap the plugs to .052, you can get a spark plug gapper at any auto parts store.
__________________
1998 GT
FRPP: 4.10s, Alluminum d/s
STEEDA:upper/lowers, springs, cc plates, tri-ax
TOKICO: Adjustable shocks
SPEC: alluminum flywheel stage two clutch
K&N: Intake
Screamin Demon ignition
 
Old June 19th, 2007, 03:11 AM   #17
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98 GT
14.60 @ 94.78mph
 
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Location: Scranton, PA
Posts: 259
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I think you guys are making this more complicated then it is. He already said that he didn't gap the plugs, having incorectly gapped plugs can cause it to buck under low rpm/part throttle load, but not at WOT.

BTW using that fuel injection cleaner too often is bad for your car. Once every other oil change is more than sufficient.
__________________
1998 GT
FRPP: 4.10s, Alluminum d/s
STEEDA:upper/lowers, springs, cc plates, tri-ax
TOKICO: Adjustable shocks
SPEC: alluminum flywheel stage two clutch
K&N: Intake
Screamin Demon ignition
 
Old June 19th, 2007, 05:27 AM   #18
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2006 GT
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Might be time for a new fuel filter. When was the last time you changed it?
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Old June 19th, 2007, 12:25 PM   #19
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1998 Mustang GT
 
Join Date: Apr 2007
Location: Scotia , NY
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never changed the fuel filter and i will go to the auto parts store and buy a gap tool, but i dont think its gas because it feels like a misfire its not cutting out.
__________________
Quit smilin your drivin a camaro!!

http://i210.photobucket.com/albums/b...iewsingle1.jpg

PI intake
March Pulleys
18x9 Black Bullit rims
msd coil packs
Stage 3 XTD King Cobra Clutch
Soon To Come:

O/r H-Pipe
 
Old June 19th, 2007, 12:25 PM   #20
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1998 Mustang GT
 
Join Date: Apr 2007
Location: Scotia , NY
Posts: 76
Default

o and i have msd coli packs...
__________________
Quit smilin your drivin a camaro!!

http://i210.photobucket.com/albums/b...iewsingle1.jpg

PI intake
March Pulleys
18x9 Black Bullit rims
msd coil packs
Stage 3 XTD King Cobra Clutch
Soon To Come:

O/r H-Pipe
 
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