Re: 2000 Jetta - misfire code - runs rich and burn a lot of gas

coolant temperature sensor?
Fuel pressure not correct?
MAF?

":Lee" <leeejohnson@xxxxxxxxx> wrote in message
news:8cee601d-fc05-45d1-a3dd-101ee5583e03@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
2000 Jetta - 2.0L

Basically was running fine, maybe a slight stutter at idle. The check
engine light came on - checked the code and it indicated misfire on
#4. Once the light is on the engine starts running very rich (smell
of fuel and black stuff coming out of the tail pipe) and it burns a
lot of fuel.

I've changed:
plugs
wires
coil

Every time I change a part I reset the code and it seems to run fine
for a while (40km) then the light comes on again and then the car
starts to run very rich again though even before the light comes on it
is still burning a lot of fuel.

I can't think of anything else to change. The O2 sensor was recently
changed as well (I got an O2 code for that one). Any ideas?


.

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