Gas leak??

2002 PONTIAC GRAND PRIX
150,000 MILES • 6 CYL • FWD • AUTOMATIC
Avatar
RENDE75
  • MEMBER
  • 1 POST
Engine's power is fine on flat road but weak on hills.
Also, when enigine stops, there is a strong smell of gas but no visible gas leak.
What's causing these problems?
Nov 18, 2010 at 8:22 PM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.
Advertisement
Avatar
RASMATAZ
  • CAR REPAIR CONTRIBUTOR
  • 75,992 POSTS
Probable causes of an engine running rich are as follows:

1.Excessive fuel pressure can be cause by restricted fuel return line
2.Defective Oxygen Sensors.
3.Leaking injectors and fuel pressure regulator.
4.Coolant temperature sensor out of calibration.
5.Restricted air intake system.
Nov 18, 2010 at 8:23 PM
Advertisement