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Discussion Starter · #1 ·
2009 GMC Acadia will not start after refueling. I have checked the gas pressure from the fuel pump. I do not see a drop in pressure after the fuel pump has primed up to fuel injectors. When at idle the pressure is maintained around 40 PSI when RPM are around 2000 the fuel pressure is at 45 to 50. Should I check my fuel injectors no error code are being generated
 

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That is a classic symptom of a bad purge valve.
Easy and cheap fix.

Heres the symotom and repair.

 
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