manual doesn't provide targets or ranges for compression tests. anybody know what would be the range for a healthy engine?
hmm. at 29.96 in and 19.5 ratio, the calculation came out to 286 psi. the shop that has my truck did a compression test on mine, and it came back 250-290 psi on all cylinders. and the truck drives fine (albeit that pesky turbo seal that failed after being rebuilt in Feb. ).350psi plus. 340ish is the min to get diesel to combust