2006 f150 won't start! I sprayed starter fluid in the air cleaner and the engine just turns over. What do I check for next?

Check your ignition system. It seems like that you are not getting spark.

Does check engine light come on when key turned to the on position? If not check for blown fuses. Also might want to check inertia fuel shut off switch. If red button sticking up then press it back down to reset switch. This probably not your issue but might want to check it just in case.

Yeah that's what I was afraid of, on this engine each plug has a separate coil over the plug and if I'm not getting spark it might be the timing chain or position sensor.

Yes the engine light is on and codes read the #1 coil pack was faulty and had a catalyst code.

http://www.f150online.com/forums/v8-engines/192096-no-start-issue-my- cure.html -- check this out it might give you some items to check.

Ive checked the fuel cut off switch and the anti theft and they are all alright. will try to find someone to help check the spark.