Hi so I’m new here and to cars but I have done a lot research and spent a lot of time trying to fix my current vehicle so here’s the story:
the first issue was code p0303 which was an engine misfire on cyl 3. I drove with that problem for 2 months becuase at the time my other vehicle was having issues.
when I had a chance to work on the engine I first checked the spark plugs for cylinders 1 and 3 on the passenger side of the car. Each plug was soaked with oil so I replaced the valve cover gasket and seals. I also replaced the factory spark plugs with NGK Iridium spark plugs and NGK wires and coil pack. I also replaced the PCV valve becuase the car was burning oil at an alarming rate. I did an oil change as well and checked the fuel injectors to make sure they were functioning properly. After all of that work I tried to start the car and it cranks but would not start. It doesn’t make sense since it ran ok before I started this work. So I proceeded to replace parts. First a new battery, new starter( tested the old starter and it was bad so that was a good thing that needed replacing.
I also tested the crank and camshaft sensors for continuity which they both have and tested the sensors themselves for ohm resistance which they also have at the right spec.
I checked the timing as well by positing the arrows on each gear at the 12 o clock position and they matched up perfectly.
I also checked the ohms on the MAF and it also is good.
I also performed a compression test on each cylinder and here are the results:
Cyl 3: 179 psi
Cyl 1: 156 psi
Cyl 4: 165 psi
Cyl 2: 135 psi
i also tested each spark plug to test for spark and all 4 plugs get a consistent spark.
I have no idea what is wrong with this car…any ideas or advice would be greatly appreciated.
I have not tested the fuel pressure but I did spray starter fluid into the intake and it did not start only crank. Fire did blow out of the intake though.