2006 Suzuki Reno constant misfires, black smoke running roung either no power of bursts of power
Jul 1, 2011 at 5:07 PM
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RASMATAZ
✓Experienced Mechanic
75,988 POSTS
Probable causes of an engine running too 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.