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  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
  • Fox 5.0 Mustang Tech

****ing plugs black and burnt

  • Thread starter Thread starter JerryDaugherty
  • Start date Start date Sep 3, 2005
J

JerryDaugherty

Member
Apr 7, 2005
309
0
16
Near Dallas
Sep 3, 2005
#1
  • Sep 3, 2005
  • #1
car runs like **** bottom line number 4 and number 8 plugs are charcoal the rest are white... brand new motorcraft plugs... wtf why just the 2 back cylinders... and i got these plugs they were stock replacement... but i have edle rpms wut plugs do i need and why are only 2 black
 

txstang84

15 Year Member
May 21, 2005
1,639
42
69
Tuscola, tx
Sep 3, 2005
#2
  • Sep 3, 2005
  • #2
I run Autolite 3924's...they seem to work fine...

do you have a couple of leaky injectors? or maybe burning oil?
 
J

JerryDaugherty

Member
Apr 7, 2005
309
0
16
Near Dallas
Sep 3, 2005
#3
  • Sep 3, 2005
  • #3
yea i think i do have leaky injectors.. but no fuel comes out just when i prime the car i can hear a lil gasp of air come out... but oddly enough the FP stays at 38 how could a leaky injector cause the charcoal on #4 and #8?
 

txstang84

15 Year Member
May 21, 2005
1,639
42
69
Tuscola, tx
Sep 3, 2005
#4
  • Sep 3, 2005
  • #4
if they are indeed leaking, they'll run the cylinders really rich, thus giving you the soot...where do you hear the "gasp" of air coming from, that could be a bit of a problem..
 
J

JerryDaugherty

Member
Apr 7, 2005
309
0
16
Near Dallas
Sep 4, 2005
#5
  • Sep 4, 2005
  • #5
well it isnt sucking the air it is like pushing it idk gasp came to mine but it is comming from the areas of the fuel rail and like swooshing air
 
J

JerryDaugherty

Member
Apr 7, 2005
309
0
16
Near Dallas
Sep 4, 2005
#6
  • Sep 4, 2005
  • #6
anyone else have anything to add?
 
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