So, the compression test results for the truck Iâ€™m looking at came back ranging from 142-154 in the cylinders. Is this good, bad, so so? I would think not great. Shouldnâ€™t they all be within 5psi of each other. The shop also said there was a small coolant leak coming from the back of the engine but couldnâ€™t tell where from. Thoughts on this?