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Diesel runs 2+ times the compression of gas. This compression heats air only and near the top of the compression cycle, the fuel is pfsssss t as a fine mist and the high temp air in the cylinder ignites it.....boom power stroke. This fuel is released at 2500 psig so you can't have any air in the system between the pump outlet and the injector..... Like you don't want to run them out of fuel. No compression, no hot air, no runny. Bad rings, no compression. Clogged injuctors, no runny. need to keep injectors clean. ( I know you have seen Chevron commercials where they advertise their gas where they put Tehron or something like that in to keep the fuel clean.....notice the fine mist at the end of the commercial; that's what you want with your diesel injectors too.) I use like .5% Marvel Mystery Oil to do this. Like it better than most disel additives. Some don't use additives at all. I do as I feel you need a little solvent in the fuel to keep the crud out. Strong smell is associated with leaking diesel somewhere in the delivery chain. Usually easily visable with an oily looking mess. Tune up is clean injectors. Additive does that. Also I like to run mine at full rpm's for awhile every once in awhile to blow out any carbon that may have accumulated. If this accumulates around the injuctor tip, it makes running difficult. They like to run hotter than gas for efficiency reasons. Since their combustion temp is well below gas, this has to be done with the thermostat and/or work....plow or pull something . Keep the fuel clean clean clean one more time clean. Period. Keep your filters changed at recommended intervals. I prefer them over gas hands, down. HTH somewhat. Mark
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