Nissan Micra 1.0 1997

PIP9799

MEMBER
1997 NISSAN MICRA
4 CYL
FWD
MANUAL
71,208 MILES

First of all the engine flooded, then after finally getting the car to start it now runs rich and uses a lot of fuel, it also gives a bit of black smoke

Monday, February 14th, 2011 AT 2:50 PM

1 Reply

RASMATAZ

MECHANIC
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.