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.

Ok, she is still stumbling for some reason.

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Old 08-25-2007, 11:35 AM
  #1  
TwotoneVert
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Default Ok, she is still stumbling for some reason.

I have checked everything I can think of and nothing is broke, burnt, loose, or missing. I am going to replace the plugs, never have done that, wires, dizzy cap and rotor, and fuel filter. If that does not do it, I guess I will have to take it to my mechanic. Question, can I connect a fuel pressure gauge to the test port on the fuel line? I thought the test port was on the rail, but mine is located on the return line just behind the alternator. Is this right? Any ideas or comments appreciated! I would like to leave the gauge installed and mount it to the firewall. Anyone else have a pressure gauge under the hood? I know the regulator is not that old, maybe 3 years, and dont want to replace that if I dont have too.
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Old 08-25-2007, 11:54 AM
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1fastzook
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Default RE: Ok, she is still stumbling for some reason.

I guess your talking about the schrader valve on the fuel line,yes you can use it.that where i have my gauge andmy fuel feed line for then20.you might also want to repalce coil unless you already have and also the pick up inside the distributor

[IMG]local://upfiles/29615/D921115D3F0244FC9BC951B29892944F.jpg[/IMG]
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Old 08-25-2007, 12:40 PM
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2 kwik
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Default RE: Ok, she is still stumbling for some reason.

did you clean your maf? how many miles on the timing chain?
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Old 08-25-2007, 09:27 PM
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TwotoneVert
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Default RE: Ok, she is still stumbling for some reason.

Dam 1fast, that is pretty. 2 kwik, I cleaned the maf a couple of weeks ago, couldnt tell you on the timing chain.
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Old 08-25-2007, 10:01 PM
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1fastzook
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Default RE: Ok, she is still stumbling for some reason.

Also you might want to check for codes and do a cylinder balance test.
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Old 08-25-2007, 10:44 PM
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TwotoneVert
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Default RE: Ok, she is still stumbling for some reason.

No codes showing up. Are you talking about compression test?
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Old 08-25-2007, 11:26 PM
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AdderMk2
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Default RE: Ok, she is still stumbling for some reason.

no, he means a cylinder balance test. its one of the KOER tests you can run to see if you have any faults in the system that are cylinder specific
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Old 08-25-2007, 11:55 PM
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Default RE: Ok, she is still stumbling for some reason.

Injectors ever been cleaned? When does it stumble
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Old 08-26-2007, 08:28 AM
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TwotoneVert
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Default RE: Ok, she is still stumbling for some reason.

Thanks Adder, I am not sure about that one. LT, it seems to only want to stumble when cruising at a level rpm, like in 5th gear at 1k, or 4th gear staying at 45 mph, etc.
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