Today on Diesel U, we're going to talk about what injection pump is inside of
your Dodge truck.
We're just going to do a walk-through on what injection pumps are in the trucks from 1989
to current day.
The first injection pump that came out in the trucks from 1989 to 1993, you first-gen
guys, the VE pump.
The VE pump, very, very good pump.
It is a Bosch unit.
It is a mechanical pump.
It is very susceptible to contamination.
If you get some contamination in it, it can take this pump out.
That's one of the things that we're running into nowadays with the rebuilds.
The cores are getting less and less out there, because a lot of them are not rebuildable,
because they've just been absolutely wrecked from contamination.
Performance-wise, this is a capable little pump.
You know, some of the easy performance modifications that are done to it is you've got the fuel
pin that's underneath the AFC housing here.
You change it out.
Or the fuel screw can be adjusted to add a little bit more fuel.
Not a lot of timing can be gotten from this pump, because of the way it's oriented on
the engine.
You can clock it a little bit and get a little bit more, but the guys that really work on
VE performance, they know it.
They know it well, and they do well with what they're working with, as far as this pump
goes.
The 7100 was in the 1994 to 1998 second-gen body style trucks.
This really, honestly is probably the performance king.
The capabilities of this pump are dang near unlimited.
Whatever you need from this pump here, you're going to get it.
So many things that can be done.
Rack plugs.
You can put delivery valves in this thing.
You can mess with the fuel play, the fuel screw, internal timing, the timing of it to
the engine.
So many different variables that you can work with on this pump to dial it in and get it
perfect.
You can see just by the sheer size of this thing.
I think that speaks volumes to what it's capable of on the performance side-wise.
It's a very good pump.
It is susceptible, as well, to contamination.
Don't think that this pump, you can run anything through it.
I hear guys talking about all this a lot of times: "7100, oh man, I can run my Dodge on
water."
No, you can't.
You wreck any of the spill ports of the barrels on this side of the thing and it's cash, too.
All right, the problem child, 1998-and-a-half to 2002, the VP44.
If you've got a VP44 on your truck, more than likely, there's a pretty good chance you've
probably had some exposure to it, because you've probably had to work on it.
This is very susceptible to lack of fuel pressure or lack of fuel flow.
It will take out the electronics on the pump and render the pump useless.
This is also a Bosch pump.
This is an electrical and mechanical pump together.
All of the brains of the pump are in the PSG, which is a computer right here on top of the
pump.
Performance-wise, it's a capable pump, as well.
A lot of internal modifications can be done to the pump by the builders to get performance
out of the pump.
End users, it's going to be mostly electronic advancements that you can do.
Tapping the pump wire, putting a programmer on your truck, and so on and so forth.
But this is electrical mechanical pump, so this is Bosch's first venture on the Dodge
trucks, away from fully mechanical.
And now current day, the CP3.
The CP3 is also a very, very performance-capable pump.
It is a great pump.
It is a very tried-and-true pump.
It has been on the trucks from 2003 all the way to the current offering.
So it's been on the truck for 13 years at the time of this taping.
That's been the longest of all four of these pumps.
So the CP3, all your fuel pressures is controlled by an FCA valve that's on this pump.
That's the only electrical part of it.
The rest of the time, this pump is pretty much a dumb pump.
It just supplies fuel and fuel pressure to a rail.
And then the injectors take what they need from the rail.
For lack of a better word.
That's the best way I know how to explain it.
I know you're looking at this pump and you're saying, "My pump is not red and it doesn't
have these valves on the back of it."
This is the exact same pump.
It's a CP3 that was on an industrial application that we took in on a core.
So the CP3 is another really good pump.
Really don't have a lot of problems with these.
If you have a failure inside of it, it is probably because of contamination on the Dodges.
They blow out the plugs here as well, too.
That's usually from contamination.
So those are all the injection pump offerings from 1989 to current year on the Dodge truck.
So hope this has given you a little walk-through if you were wondering exactly what injection
pump is on your truck, or if you hear the term injection pump.
If you're just getting into diesel performance, kind of give you an idea of what you've got
here.
This is DieselU.
We are doing a Q&A on our Facebook page every Thursday at 3:00, 3:30, just depending on
what time we can get down to it.
So check us out on the Q&A.
DieselU.
Thank you for watching.