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This lift pump only has less than a year on it, and I don't drive the truck much in the summer. It will have good pressure warming up and as I leave, but after a short while it drops.

I am running an electric gauge. I don't believe that it is associated with the grid heaters, because after the gauge goes down, it doesn't comeback up until I turn off the engine.

I'm trying to find out if my lift pump is starting to go bad or if it is something else. The past couple of mornings it's been a little cooler than normal out here in California. I'll start up the truck and have good fuel pressure, between 14-15 psi. I'll drive a little ways and all of a...

What does the mass of the accessories and the rotating mass of the engine have to do with shifting gears? You've lost me on that one. The crankshaft, flywheel, pressure plate... etc,etc. are all spinning at the same rate (well, at least you hope they are). And the clutch disc is spinning the...

How is double clutching faster? It is alot more involved that using the clutch normally. If you know where the shift points are, shifting without the clutch won't hurt the synchro's. It's when you don't know and grind the gears or you are power shifting that will destroy the synchro's. All...

shifting w/o the clutch Don't most big rigs have NO synchro's in them?... That's why they have to double clutch to shift gears. Because there are no syncro's in the transmission, they have to release the clutch and manually synchronize the speed of the engine and transmission before either up or down...