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Losing Power at higher RPM's?

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Old 03-30-2005, 02:05 PM
  #11  
roundman
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Default RE: Losing Power at higher RPM's?

ORIGINAL: OuTlAwZ

I've searched the this site, but couldn't find anything or just didn't search good enough.

When I gun in 2nd it accels up to about 3000 rpm's, then it seems to bog down and/or hesitate. Is this a carbueator Problem?



83- 5.0- Stock
4speed

first thing I would do is replace both fuel filters, the one in line and the one at the inlet to the carb itself, then see if the problem still occurs.
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Old 03-30-2005, 02:14 PM
  #12  
Djs94stang
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Default RE: Losing Power at higher RPM's?

Check the float level in the carb. You can also check the fuel pressure...I think it should be between 5 to7 psi roughly. I believe you have a mechanical fuel pump.
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Old 03-30-2005, 02:31 PM
  #13  
vfast
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Default RE: Losing Power at higher RPM's?

pressure should be atleast 4 psi
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Old 03-30-2005, 09:54 PM
  #14  
OuTlAwZ
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Default RE: Losing Power at higher RPM's?

Carb- Holley 4bbl 600cfm

Could bad floats cause this? I'll start with the filters anyways, can't hurt anything...
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Old 03-30-2005, 09:58 PM
  #15  
grabbem88
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Default RE: Losing Power at higher RPM's?

just unplug it,and you'll know for sure if it's the wiring or o2's....that's how i found out my harness was bad.
ORIGINAL: xjarhead1999

ORIGINAL: Dan89lx

run the codes jarhead, could be an oxgen sensor
i need to do that. just dont have a code reader or anything. but you know it may be the oxygen sensor. or at least the harness. its a rigged job the previous owner done with what looks like speaker cable or something he used to extend them. thanks, i wasnt thinking about that.
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