Ka24de, Crank, No start.

[magicalhawk6]

My nissan 240sx s13 running a KA24DE has alot of trouble staying alive. in the last few months it has been running really rich and ecu flashed two codes; 12 and 33. (MAF sensor and O2 sensor). i have replaced both sensors but code is still flashing. Now my Ka24de won't start and if it does, it stalls after a few seconds of rough idle.

also, i know i have a spark on all 4 cylinders.

[that1guywithans13]

Try taking the fuel pump fuse out it's located in the engine bay area. With it off try starting your car while pumping the gas pedal. If it starts you have liquid (either oil, gas, or coolant) wetting 1 or more spark plugs. When they are wet, the fuel being injected to that cylinder will not burn and it will have a "flood" condition.
try it see what happens.

[Levhiathan]

a faulty fpr does something similar, it will start, run for a few seconds and then cut off. have u tested ur fuel pressure yet?