Greetings Land Rover Owners and Techs,

My 2002 Discovery II will not start. I have the following codes: p0307, p0304 and p1300.

Started having problems this afternoon, the vehicle was stalling on the startup, but finally turned over. I received a tune-up in June; new wires, plugs, etc.

I have been reading this forum for quite sometime, as I was dealing with minor issues; but now, I feel as though, I'm in great need of assistance before spending thousands of dollars.

Discovery Freeman

 

Those codes won't cause a starting problem, more of a misfire on #'s 4 and 7.
Who tuned your engine, what brand of plugs and wires were installed, if you don't know, go look cause it is important.
Get back to us with that and the mileage along with what octane gas do you run?