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.

fox running VERY rich.

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Old 07-05-2007, 07:17 PM
  #1  
02WhiteGTVert
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Default fox running VERY rich.

Ok here's the deal,i got my buddies 87 T-top in the backyard on jackstands,trying to figure out what the hell was wrong with it,here's the mods=

CAI
Trick Flow heads
GT-40 upper & lower intake (off of an Explorer)
O/R H-pipe
E-303 FRPP Camshaft

Basically,i crank it up and it runs like straight ***. crank timing is good,i fixed the ignition timing last night,tested the ECT,relocated the AIT sensor,but still nothing. Can anyone help me out? thanks.
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Old 07-05-2007, 07:17 PM
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02WhiteGTVert
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Default RE: fox running VERY rich.

oh yea,he said it ran fine before the heads and upper & lower intake.
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Old 07-05-2007, 07:18 PM
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mattdel
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Default RE: fox running VERY rich.

hows the fuel pressure
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Old 07-05-2007, 07:20 PM
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PRO50SC
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Default RE: fox running VERY rich.

Vacuum leaks?
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Old 07-05-2007, 07:22 PM
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02WhiteGTVert
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Default RE: fox running VERY rich.

ORIGINAL: PRO50SC

Vacuum leaks?

he's got most of the vaccuum lines capped,because he doesn't know what's what with the GT40 intakes.
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Old 07-05-2007, 07:57 PM
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aode08
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Default RE: fox running VERY rich.

ORIGINAL: 02WhiteGTVert

Ok here's the deal,i got my buddies 87 T-top in the backyard on jackstands,trying to figure out what the hell was wrong with it,here's the mods=

CAI
Trick Flow heads
GT-40 upper & lower intake (off of an Explorer)
O/R H-pipe
E-303 FRPP Camshaft

Basically,i crank it up and it runs like straight ***. crank timing is good,i fixed the ignition timing last night,tested the ECT,relocated the AIT sensor,but still nothing. Can anyone help me out? thanks.
maybe improper valve lash settings, the valves are not opening and closing as they should. thats the most common , and getting the lower intake seated properly
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Old 07-05-2007, 10:09 PM
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dillon1340
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Default RE: fox running VERY rich.

it's an 87, is it speed density? i dont think they respond well to heads intake and cam swaps.
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