Hi all,

I am a second gen owner, however my Dad has a first gen with the VE pump.

He was asking about taking it in for a "tune up" and pump timing check.

Can the VE pump be timed installed? and can it be checked?

I don't see the need for a tune up with the exeption of valve lash perhaps, Its a 92 with 123km, 73K miles.

Thanks in Advance,,

cheers

 

The valves should be adjusted (assuming that they haven't been recently) and, yes, the pump can be timed on the engine. The best way to do it is by using a dial guage through the injector bore (or on top of a dropped valve) to determine TDC with certainty, and then to measure the linear displacement of the delivery piston through the port in the back of the pump. I am assuming that you were going to have a shop do this for you, so this gives you an idea of what they should say the will be doing. If you need more detailed instructions and specs, I can look them up for you -- if someone else doesn't post first.

You probably want about 15 degrees of static advance on the pump. The spec calls for 12-13, to reduce NOx emissions.

 

alec , i just bought a 90 model 250 with only 89,000 miles but it has had the pump and the turbo replaced .
i would like to check the timing and advance it to the correct spec but i need more instructions to do that . i am qualified ( ase master mechanic )and have the tools needed i think ( fully equipped home machine shop ) but i am lacking experience with this engine . i cant just advance it because i dont know where it was timed when installed .
could you direct me to details on timing this pump ?

 

Spend $20 and get a book at Autozone, Advanced or anywhere.

The instructions are in the book.

If it ain't broke don't fix it

Be careful IF you advance the timing too much things tend to melt.

Voice of experence spoked here.

 

The manual is at home . . .
On the back of the injection pump, the delivery valves and injector lines make a circle. In the center of the circle is a plug that covers the end of the piston bore. You take out the plug, and use a dial indicator to measure the piston travel: Go to TDC, rotate the engine backwards until the injection pump piston stops moving (is at BDC), zero the guage, then rotate engine back to TDC and measure the piston travel. 1.5mm is approximately 15 degrees of advance, and the generally desired setting. From what I have read, some people who are running Lucas (POD) injectors go up to 1.7mm ~17degrees of advance.

If you keep everything clean, you should be all set. Getting to all of the bolts on the injection pump to actually rotate it and set the adjustment is a PITA. Make sure you get the three on the front and one in the back .

There is the "timing pin" just below the injection pump. These are often broken (from being left engaged when the engine was started), and more often wrong. I would recommend measuring TDC for yourself.

If you buy a manual, I would recommend getting the '93 Chrysler shop manual if you have a 5 speed -- some of the wiring is different, but the re-build instructions for the getrag are included in that year only. I think that they are still available from dodge.

I hope that helped a little.

Alec

 

yes alec , that helped a great deal . i will go out as soon as it warms up and see what i can see lol . warm is relative , its 50 degrees here today and that is cold to me .................much rather it be 90 degrees .