help!! 91GT supercharged misses at high rpms

R

RVGUY

New Member

May 12, 2004

1

0

0

SLC,Utah

May 30, 2004

#1

• May 30, 2004

• #1

I have a 91 gt stock motor with 70mm t/b and 73mm mas air and all the rest is stock but the xpipe and full flowmaster kit. At higher rpms the motor misses but doest ping. I can put the car in park and rev it till the dogs come home and it wont miss? and comments would be great!!
www.91ragtop.stangnet.com

 

shawn13

New Member

Feb 28, 2004

70

0

0

Dwight IL

May 30, 2004

#2

• May 30, 2004

• #2

So its just missing under a load!!! I would start with fuel pressure and fuel filter then plugs, wires,cap and so on

 

S

speedytang

Founding Member

Jul 28, 1999

765

1

17

Marengo,Ohio,US

May 30, 2004

#3

• May 30, 2004

• #3

Your blowing out spark. Gap plugs at .032 and wold recommend Autolite #23 plugs

 

DJTR

Member

Mar 19, 2004

228

0

16

OTTAWA, Ontario, Canada

May 31, 2004

#4

• May 31, 2004

• #4

I agree

 

1

1lx2beat

New Member

Aug 7, 2005

2

0

0

Aug 7, 2005

#5

• Aug 7, 2005

• #5

really yea fuel presure and plugs! gata be ... but what would cause it not to have any fuel presure untill i purge my pump 12 times then it only holds pressure for a min or less.... bad ran fuel lines? if u need to kno nemore about this car ask im bieng crude...it has allot of aftermarket fuel sys and engine parts...thanx guys


ps: my pc is stock how can i get it recalibrated or do i even have to ... car runs like a bat outa hell!