In Reply to: Re: F150 4.6 saga continues posted by lonestarjeff on January 19, 2019 at 13:26:13:
If you don’t have O2 sensor codes I wouldn’t replace them. Especially since the Chinese replacements are are hit and miss. Can you check you fuel trims with scanner? Did you remove the oil pan? Was there anything interesting in it. Does it start up, with no delay? Ex. Extended crank. Have you done a compression test on motor? It sounds like a crankshaft or camshaft position sensor. But it should be blowing some codes. Anyway you miss connected cam sensor? 4.6 are great motors. You timing looks balls on. Anything in intake system. Like a mouse nest? Seen them build a condo in a air box.