1993 Nissian Sentra SG auto choke

1993 NISSAN SENTRA
4 CYL • FWD • MANUAL
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MIKE BRIDGE
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  • 1 POST
1993 Nissian Sentra SG auto choke is stuck on. Fuel use is excessinely high. If car stalls it is hard to restart.
Jul 16, 2011 at 12:06 AM
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RASMATAZ
  • CAR REPAIR CONTRIBUTOR
  • 75,992 POSTS
Check the fuel pressure with a gauge to rule out the fuel pressure regulator, clogged return line and fuel pump
Oct 9, 2011 at 8:12 AM
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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.
Oct 9, 2011 at 8:13 AM
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.