rough idle and black smoke

2004 HYUNDAI SANTRO
60,000 MILES
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SMSAIF
  • MEMBER
  • 4 POSTS
hi
good day

Check compression.Check ignition timing. Check injector pulsing.
plz give me detail of this checking procedures
Mar 17, 2012 at 10:58 AM
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RASMATAZ
  • ✓Experienced Mechanic
  • 75,988 POSTS
Running too rich

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 17, 2012 at 12:03 PM
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