Do it the easy way. Pull the plugs, rotate the engine by hand so that the valve you are adjusting's cam is on the low part of the lobe. Do that for every valve you adjust. You don't have to know anything about firing order or TDC.Quick question please! I haven't been able to find (or understand) a clear answer and just want to be sure.
The firing order (piston order) is 1342 , 1 being passenger side 2 being driver side.
So when the TDC mark on the crank pully is up, piston 1 is ready to be adjusted. I turn the crank pulley 90 degrees clockwise (3 o'clock position) what piston is in the tdc position now? number 3 piston? Then another 90 degrees for number 4, and a final 90 degrees (9 o'clock) for cylinder 2?
Then replace the plugs while you have them out so you are changing them at the valve adjust service interval.