Stupid thing about this 97 Explorer SOHC
Timing was definetly off. Apparently the camshaft slipped and turned by 60 degrees. Causing the cylinders to miss on the drivers side. 4,5,& 6 were misfiring and causing lean fuel to burn which ruined my catalytic converters. SOHC has three timing chains. The front chain was good, which I thought had slipped, but the one right behind it needed to be adjusted by 3 tooth sprockets. While I had the valve cover off, I noticed the camshaft was off. The bolt to it was not tighten and there was NO pin to keep it in place. Had to drill my own hole and stick a little pin in to keep in place along with welding glue. I have no idea how Ford makes this crap along with no timing marks?! The Haines Ford Rangers book will show you where the TDC mark is by going 6 marks over. Thats right, 6 sprokets over to the left and mark it so you know where top dead center is for your #1 cylinder head is on the passenger side valves. I was having low compression of under 100 on the drivers side which I believe is bank one. Passenger side was 160. Now I have equal compression of 160 on both sides. What a pain in the ass this has been ! Forget about going to the library reference section to find out about timing this engine when it slips cause there's nothing written on this kind of situation.