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  • 1996 - 2004 SN95 Mustang -General/Talk-
  • SN95 4.6L Mustang Tech

EVAP & Fuel Pressure Problem

  • Thread starter Thread starter BrightBlue00GT
  • Start date Start date Jul 29, 2009

BrightBlue00GT

I am even OLDER than Hawk!
Jun 22, 2000
2,906
0
47
Stationed in Korea
Jul 29, 2009
#1
  • Jul 29, 2009
  • #1
No codes, but during my OBDII scans I am showing these failed tests:

$21 EVAPI (Evaporative Fuel Tank Pressure Initial Low-High...)
$25 EVAPRISEL4

And yes the car runs poorly. Feels like it has a misfire, but I'm sure it's not an electrical (plugs) misfire. Poor power, the fuel press gauge fluctuates almost in tune with what appears to be the misfire (again, it's not).

I assume I need to test the evap system. Any way to do that short of a shop doing it?
 
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