2006 Suzuki Reno constant misfires, black smoke running roung either no power of bursts of power
Jul 2, 2011 at 12:07 AM
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RASMATAZ
CERTIFIED EXPERT
75,992 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.