I bought a 96' f-450, owner said it has been sitting for about 4 years, at first starter was locked up so replaced the starter. Got it cranking still no fire, tested lift pump and it wasn't pumping so replaced lift pump and some new gas lines have been replaced, still no start. Hooked up diagnostic tool, not showing any codes, did injector buzz test everything checked out. Fuel is getting to fuel bowl. No smoke out of tailpipe when cranking. Can get it to run off of ether, I guess still a fuel issue. Any help is appreciated!