[miamileroy]

First, let me start off by saying I don't know too much about cars but, I'm very sensible. With that being said, I tried turning the key three times and I think I hear the fuel pump come on, because I hear a humming sound when I put the key to the "on" position. The check engine light is on and the code scanner gives a P0340 code " camshaft position sensor A - bank 1 circuit malfunction". I've replaced the camshaft sensor and it didn't fix the problem. A friend who knows about cars said I'm getting fuel after he pressed a valve on the engine and gas came out, then he opened something, not sure what it is, and said I'm getting a spark, so he thinks it might be the timing chain. Oh yeah, I don't know if I ever changed the fuel filter, but I got a complete tune up about 40,000 miles ago. Thanks for any help because I really can't afford a mechanic.