5 /5 Troy: I took my diesel 7.3 to other mechanic shop and they couldnt repair it. Next I took it to Macks , he repaired it in a day. It runs awesome now . Before it only hesitated and the engine light wouldnt stop blinking. No light on now, after his work . Thanks for your great work. If you have a 7.3 old diesel he is the man bar none. Thanks guys !