And don't forget the most important step in the whole process...Scratching your...head trying to figure out what to do with the numbers. Are your numbers correct? Should you do them again...and again? What are "good numbers"? What should I do if one (or two) is a little low? By low I mean a 10% deviation for the average? Or do I mean 10% less than the next lowest one? Or should the spread be only so many %?

Cut to the chase and loosen the injector line at each cylinder one at a time to see if you can find the "dead" cylinder. Then swap that injector with one from a good working cylinder and see if the problem follows the injector, or the cylinder.

No need for a diesel compression gauge or parts, unless you consider the heat shields mentioned above.

240Joe