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Engine Specific Info and Questions => IDI Engine => Topic started by: molgrips on October 27, 2008, 08:28:50 am

Title: Pump rebuild for a newbie
Post by: molgrips on October 27, 2008, 08:28:50 am

I was thinking of taking off my VE pump, taking it to bits, cleaning it, changing the seals, and putting it back together.

Is it a good idea to attempt this, using some of the guides and info on the net?

I've never done a pump before, and I'm not a trained engineer.  I am however fairly handy and I've fiddled with a few precision things in my time of various types.

Also, does it need some kind of calibration after the strip down or what?

Title: Pump rebuild for a newbie
Post by: dillenger1 on October 27, 2008, 12:50:48 pm

Dont be scared.My first was very nerve racking.<--- :D As long as you have the right tools,its a semi-breeze.Just keep everything in order.MAKE SURE you mark all original settings(throttle shaft,fuel screww,idle,max)Follow one of the rebuilds from this board and youll be fine.

Title: Pump rebuild for a newbie
Post by: molgrips on October 27, 2008, 01:18:22 pm

The right tools?  Is there anything special I need?

Title: Pump rebuild for a newbie
Post by: zukgod1 on October 27, 2008, 01:54:18 pm

There is a 3 sided socket needed for a couple of the bolts and some torx bits as well.
Aside from that not much special.

Title: Pump rebuild for a newbie
Post by: autoholic on October 27, 2008, 01:57:44 pm

You'll need the three side socket, or I just ground out a regular 6 pt which worked OK.

When you reassemble, have the pump vertical with the rear facing up, all parts in the pump, then lower the rotor head back on. You'll need to put some grease on the 2 springs to hold them in place,  since these need to go on with the head and will want to fall out.

Also, use an old pump bracket if you have one around, they make a nice mounting fixture (someone else here recommended this, works well)

Title: Pump rebuild for a newbie
Post by: blkboostedtruck on October 27, 2008, 02:47:01 pm

cleanliness is also recommended! one speck of dirt can ruin your day !
very important!
Duane

Title: Pump rebuild for a newbie
Post by: molgrips on October 27, 2008, 03:11:14 pm

Aww, thanks guys - I'm really feeling the love and support!

I'm going to do the following to try and refine my motor:

1) double check injection and valve timing
2) go under the car and see if I can see where vibration is coming from
3) get the injectors done
4) rebuild and/or re-seal the pump
5) try and get a higher 5th gear
6) give up.

Title: Pump rebuild for a newbie
Post by: AdAm84 on October 27, 2008, 07:09:16 pm

I honestly would not attempt it at home. It should be calibrated after rebuild. Your need a test stand to do that. It might work fine, but if things are worn and need replaced, then that will change your old settings, causing it to need to be calibrated. Plus, from experiance, and as a fuel tech, the shop you end up taking it to WILL hate you for bringing in a box of pieces. :evil:

Title: Pump rebuild for a newbie
Post by: molgrips on October 28, 2008, 02:48:56 am

Is it possible to change seals without full disassembly leading to recalibration?

What exactly needs calibrating?

Title: Pump rebuild for a newbie
Post by: dillenger1 on October 28, 2008, 03:19:57 am

Just make sure you mark your stuff with a scrathch pen or white out.plave all internall parts in clean diesel.I would inspect the feed pump and camplate assembly for wear.Make sure theres no gunk what so ever.

Title: Pump rebuild for a newbie
Post by: zukgod1 on October 28, 2008, 08:04:05 am

You can reseal it your self no problem.
As long as you dont make any changes to the current settings and it is currently running fine it should run fine when your done without the leaks.