Check engine light on steady. Code P0300 random miss fire.

Thank you for your response. Car is in shop now, was told that the valves are burnt, cylinder head, gasket and seals need to be replaced. Do you think this will correct the P0300 code?

i think i would get some other opinions!i have had that code and 8 more at same time,it was a vaccum leak,20000 miles ago,still driving with 304000 miles now.2000 f150 4.6l supercab.research your problem.what they told could be true,just saying.copy and paste link. How To Fix P0300 random misfire codes in your car - YouTube 2:56 www.youtube.com/watch?v=OyvdWeyDHf4

Thank you for the information. Will keep you informed.

your welcome.