Nissan Repair: Altima wont start, crank angle sensor, crank pulley

Question
QUESTION: I have had a slew of things go wrong recently on my altima. First the Cam sensor went out, so I put on a new cam sensor. I put on a new knock sensor as well. Drove it 15 miles, the number 1 injector burned out. Replaced the injector, the starter then would not start it back, the solenoid went out. Replaced the starter, and now it wont start at all. The engine wouldnt turn over so I took a ratchet and turned it a couple revolutions on the crank pulley and it turned over fine. After that, it wouldnt start. i checked for spark and fuel. I checked the timing and have found no problems as of yet. I checked the fuel by pulling off the line at the fuel filter, and pulling the the injector. I received fuel at both ends. It is turning over, but will not start. Any ideas, ive tried everything I can think of, but im lost as to what it might be. I believe it may have too much oil in it, and im going to try draining some out, although i dont really feel like that would be a problem. Thanks in advance.

-Jeff

ANSWER: Jeff,

It is either fuel or spark.  First, check the injectors by first pulling the plugs to make sure none are flooded with gas.  If any are that hole probably has a bad injector.  Second, the spark plugs need to be checked to see if they fire.  CHeck the output one at a time to make sure all are firing.  Go back over the crank angle sensor since you already replaced the cam sensor.  Remember that the cam angle sensor fires the injectors and the crank angle sensor fires the plugs.

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QUESTION: I drained all the oil out of it, and the oil is filled with gas. I drained almost two gallons of gas/oil out of the car. I pulled all the spark plugs, even before I read this and they are all firing well. Compression is good. Also the next thing that I did was remove a gas line off of the passenger side of the car because I thought that there might be an airlock in the gas line, since I failed to properly relieve the pressure from the system, and it still is very difficult to start, but it will start. I also checked the timing just to be sure, i rolled my #1 pision tdc and it is pointing at the #1 spark plug. So it started for about one second, if you pump the gas, but wont stay running. Any thoughts as to why, or why theres gas in the oil? Thanks

Answer
Jeff,

YOu have leaky injectors that either are stuck open or the crank angle sensor or computer is sending a signal to keep them open.  Do a pressure test to include a leakdown to see if they are running gas into the engine at such a rate the car will not start or stay running.