My 2001 Dodge Ram 2500 diesel lacks acceleration at times, when you first crank it up, when engine is cold the vehicle has lots of grey smoke. Then the grey smokes clears up, but when driving at times you can put the pedal on the floor, no power, then it will run fine, then does it again. I have replaced the fuel transfer pump, mine is located on the engine, not in the tank.

Dar

• 2007 Answers
• Posted on May 17, 2009

SOURCE: 92 dodge 318 truck engine runs til you stop, then stalls when put

Then i think i'd be dumping some soapy water on the intake gaskets checking for leaks. ANd wiggle the **** out of all vacuum hoses. ( you probably did that) And if there aren't any, your cam could be tired. You got a tough one there. Hard to figure with a keyboard.

SOURCE: I have a 2001 Dodge Ram 1500 5.2L,

The plenum problem should not affect compression tests. It allows oil to get sucked into the intake and will cause carbon buildup, plug fouling, and pinging. If you have zero compression on a cylinder, it is usually a valve problem. Even a burned piston will make some compression, unless it has a big hole in the middle.
Sorry, but if your compression results are to be trusted (and it seems they are), then you have to tear a head off to find the problem, or at least get a borescope in it.

SOURCE: Rough idle and generally running terrible!

if idling rough sound like air in system.and your injection pump timing is off.

SOURCE: 2001 dodge 2500 diesel oil leak in front of power

The power steering pump is piggie backed to the vacuum pump. The seal in the back of the vacuum pump has engin oil under presure behind it cousing a leak that gets worse over time. Cummins make a seal kit to fix this leak.

SOURCE: 2001 dodge 2500 diesel turns over but won't start

You don't say if you plug it in, but this really really helps.