So just woke an old girl up after a hibernation....2 years. Set timing statically, set valves, changed oil and fuel filters etc etc. Smoked a bit more than i cared for. Checked timing with the tach and time, reset it for 14 degrees before tdc while running. It got a bit better...but still smokig. so will old diesel (2-3 years0 cause smoking...or what else should I be looking for? All compressions were in the 390 to 410 range, on my cheapy comp tester ( usually reads low, use it more to check that all cyls are close to each other). Forgot to mention injectors were just rebuilt with monarchs.