fuel problem

1998 PONTIAC SUNFIRE
4 CYL • 2WD • AUTOMATIC
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HCANTU
  • MEMBER
  • 1 POST
My 1998 Pontiac Sunfire is using excess fuel and cutting out. It also has white smoke coming from the exhaust. What could be the cause?
Mar 22, 2011 at 12:59 AM
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RASMATAZ
  • CAR REPAIR CONTRIBUTOR
  • 75,992 POSTS
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
Mar 22, 2011 at 1:01 AM
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