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Stock motor.. running RICH (have searched)

5.0L (1979-1995) Mustang Technical discussions on 5.0 Liter Mustangs within. This does not include the 5.0 from the 2011 Mustang GT. That information is in the 2005-1011 section.

Stock motor.. running RICH (have searched)

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Old 11-05-2006, 02:28 AM
  #11  
cbennett
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Default RE: Stock motor.. running RICH (have searched)

but this thing idles like it has a gigantic cam in it.. like the fuel is really bein laid to it
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Old 11-05-2006, 02:32 AM
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Default RE: Stock motor.. running RICH (have searched)

well.. that was in reply to this
"no exhaust means no back pressure so the unburned fuel is being sucked out a little back pressure will help in fuel scavaging "

thanks for all your help...

on these cars.. how many o2's are there?

on my 95 bird there are 4.. and i was told 2 of them are basically pointless

are there just 2 o2's on the fox's?
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Old 11-05-2006, 02:34 AM
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grabbem88
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Default RE: Stock motor.. running RICH (have searched)

yes two 02's...and to my reply...trust me you have alot going on that needs adressed
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Old 11-05-2006, 02:37 AM
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Default RE: Stock motor.. running RICH (have searched)

what else could be causing it to run rich?
if i go out tomorrow and talk to the boys in town, and find an h pipe, and get some brand new o2's
if i am still running rich, what would i look for?
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Old 11-05-2006, 02:39 AM
  #15  
grabbem88
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Default RE: Stock motor.. running RICH (have searched)

maybe a fuel pressure regulator..... adjustable
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Old 11-05-2006, 02:42 AM
  #16  
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Default RE: Stock motor.. running RICH (have searched)

just for my own future reference..
is MAF more dependant upon o2's?
i have ordered a MAF conversion, for my motor that will be going in next year,
i have a 302 bored to a 311 we built with 10.5 to 1 compression
plan on throwin on a trickflow intake, and doing the maf conversion..
hope i dont run into this problem again..
i dont know much about EFI

... where is the air/fuel screw lmao
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