Dave - you dont have to worry about losing TDC when turning it over - the ECU picks up the correct cylinder sequence off the tone wheel - Still....it doesnt hurt to mark tdc when you find it....in case you ever want to degree a cam...
Hey Rat, just finished doing a compression test on my 2011 Dodge Charger R/T with the 5.7L Hemi V8.
All cylinders except cylinder one were very close to 160 psi with the throttle body fully opened, and all of the cylinders having one spark plug removed.
However, cylinder 1 is showing 0 psi. So I am getting ready to do a leak down test on cylinder 1. I was plannning just to use the old school method with a ballon to find the compression stroke, and then find the exact top using something long down into the cylinder while manually turning the motor over.
Is there an easier way to find TDC? Also, is there an easy way to make sure I am still TDC as I move from cylinder to cylinder if I plan on testing all of them? May not be a bad idea to do it since it’s basically all set and ready to go.
Seems like you know much more about this than I do. Any information you can provide would greatly help.