Cranking speed, compression, timing, and fuel volume.
The VE44 in the early CUmmins pick-ups really puts the fuel out under 600 PRM and advances the timing when cold. That's why you start looking for where it's sucking air if it takes more than 1 turn of the crank before it fires. When warm you often just bump the starter and they run.
Electronic engine controls can do that as well, but they have to wait for the booster pump to build rail pressure before they can fire properly on a common-rail set-up.
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Today's Featured Article - The Nuts and Bolts of Fasteners - Part 2 - by Curtis Von Fange. In our previous article we discussed capscrews, bolts, and nuts along with their relative hardness and thread sizes. In this segment we will finish up on our fasteners and then work with ways to keep them from loosening up in the field. Capscrews, bolts and nuts are not the only means of holding two parts together. When dealing with thinner metals like sheet tin, a long bolt and
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