No start after HG replacement

[Rvanzoest]

I replaced the Head Gaskets so I removed all the needed parts to get to it and replace it. It cracks but no start. I marked my timing chain with 3 paint lines on each side and put them exactly back on the same gear. I had an issue with the camshaft position solenoid but replaced that with a new one. This threw a P0013 code, but once replaced no more codes. Only other issues on the forscan were compass not working (already an issue before), and passenger auto running boards having a short, which i don't think affects much as they still went up and down on the self test.
I confirmed I have spark by starting the engine with a plug grounded to the body, saw the spark.
Fully charged the battery over night with a trickle charger.
Air is clear as the filter is good and I've tried starting it with out the whole plastic assembly on it. This did cause a backfire.
I also tried putting starter fluid in, same result no start but a loud bang and some smoke.
I feel like it's the fuel that's the problem. The fuel is a few weeks old, and it's a 1/4 tank.
I had the fuel rail and injectors off, and they went back on easy. The pump worked before the work was done, but I never heard the pump activate before either.
Is there anything I can check? I was thinking using forscan to see if there is fuel pressure, I don't have a full version so not sure if I need to get the trail. or a vacuum tester.
What else could I be missing? Common issues?

Thank you so much.

 

[DieselMonk]

The camshaft position sensor, was that a genuine OEM or aftermarket? What about the cam sensors?

 

[Hamfisted]

You did both head gaskets right ? it should've fired up when you sprayed starter fluid in the throttle body. If you had it up on ramps when you were doing your work, check the fuel pump inertia switch back there in the left rear quarter panel pocket. Make sure the little red plunger on top is pressed in. That's the only gotcha I know for the fuel system. The backfiring and smoke might be a problem....






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[twodollars]

Backfire is usually a sign of incorrect ignition timing. After cranking are your plugs wet? How did you maintain crank to cam timing?