Mechanics

ROUGH IDLE AND BLACK SMOKE

2004 Hyundai Santro • 60,000 miles

Hi
good day

Check compression. Check ignition timing. Check injector pulsing.
plz give me detail of this checking procedures
Avatar
Smsaif
March 17, 2012.




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.

Tiny
Rasmataz
Mar 17, 2012.


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