Sluggish disco.........not any more!

Wizzywill said:

Has any one gone for a mot arfter tuning up the pump I
Have turned up the turbo and the pump .
I get a bit of smoke when I start it up and when I boot it
Got to mot it soon !!! ( when I sort out all the rust tho haha )

Click to expand...

chrisyleigh said:

Sorry to bump the thread but I cant seem to get the 4 flat head screws undone for the cover

Click to expand...

chrisyleigh said:

There bloody tight got the biggest flat head I have using a snapper on the flat head aswell

Click to expand...

landowner said:

Get a big screwdriver on them with a pair of grips on the screwdriver, put some twist pressure on and tap the top of the screwdriver with a hammer, they will crack off easy

Click to expand...

V8jon said:

I've had my 300tdi auto for a few months now and have had to put up with it beign like a snail setting off,so bad when cold I've had to put it in low to get up the hill out of the street!
So after searching the web and reading all the info I decided to "tweek" the injector pump, and all I can say is "wow!". What a difference,it's like a different motor now. Before it was pathetic, even dangerous setting off and up hills it was terrible,put your foot down to keep your momentum and it would not have enough guts to keep it in top gear so it would kick down a gear which is great,ease your foot off and it would go back in top a little too early and you'd have to kick down again and so on and so on, so you can imagine what it was like up a long hill.
Now it's got lots more pulling power so setting off is totaly at the other end of the scale,it goes like stink! And it's definitely got more grunt all through the revs so uphill you don't need to put your foot on the throttle as much so kickdown isn't used as much.
As for fuel consumption it seems to be the same,I've done the same 60mile journey to work and it dosn't seem to have used any more.

Definitely worth thinking about and it only takes 20 mins to do!

Click to expand...

V8jon said:

I've had my 300tdi auto for a few months now and have had to put up with it beign like a snail setting off,so bad when cold I've had to put it in low to get up the hill out of the street!
So after searching the web and reading all the info I decided to "tweek" the injector pump, and all I can say is "wow!". What a difference,it's like a different motor now. Before it was pathetic, even dangerous setting off and up hills it was terrible,put your foot down to keep your momentum and it would not have enough guts to keep it in top gear so it would kick down a gear which is great,ease your foot off and it would go back in top a little too early and you'd have to kick down again and so on and so on, so you can imagine what it was like up a long hill.
Now it's got lots more pulling power so setting off is totaly at the other end of the scale,it goes like stink! And it's definitely got more grunt all through the revs so uphill you don't need to put your foot on the throttle as much so kickdown isn't used as much.
As for fuel consumption it seems to be the same,I've done the same 60mile journey to work and it dosn't seem to have used any more.

Definitely worth thinking about and it only takes 20 mins to do!

Click to expand...

V8jon said:

Here's Some pics of what I did to my injector pump

just a word of warning, if you do these mods be aware that you could potentialy damage your engine if not done correctly and the pics are of what I did to mine so please don't blame me if it all goes tits up, thanks

looking from the drivers side wing you will see the top of the pump like this

Under the cap in the middle of the cover is the smoke screw, this will affect low boost and is a must for all autos. Lever the cap out then mark the torx bolt in the middle of the locknut to the pump body, loosen the locknut so the bolt will turn free and turn the torx bolt in 1 1/2 to 2 turns clockwise then tighten the locknut. Try it up the road to see if it smokes too much, if it does back it off until it stops smoking.

Once that's done remove the 4 screws from the top of the cover( mine had 2 screws and 2 torx that hold the throttle position sensor on)
The cover should pop up on it's own, try not to twist it side to side as you don't want to alter the position of the diaphram that's below it.
Move the cover out of the way and leave it hanging on the pipe to reveal this

you should see a little pop mark on the inner part of the diaphram mark this to the pump body so you know where to put it back to.
Pull the diaphram out and you will see it looks like this,the score mark on the taper at the end is where the fuel pin rides on,if there is two marks it has been adjusted before

then if you look in the pump where you took the diaphram out you will see a spring,plastic collar and the star wheel like so

take the spring and collar out and for fcuks sake don't loose them!*
Mark the star wheel to the body so you know the original position and turn it clockwise 1/4 of a turn at a time(you'll have to build it all back up and try it up the road) if it dose'nt smoke turn it another 1/4 of a turn.
I turned mine one full turn (360 degrees) any more and it started to smoke too much. To turn the star wheel put a screwdriver between the star wheel and the pump body and gently flick it round.

The star wheel adjusts the automatic fuel control

Now you need to take the cover off again and turn up the full load fuel delivery by adjusting the diaphram. It needs to be turned clockwise between 90 and 120 degrees,start at 90 and see how it is if it dosn't smoke too much go some more.

I moved mine from this position

to this

and that's it,easy!

you could do all these adjustments at once but if it smokes badly you won't know which to back off

It's still too early to tell but if anything I'm getting better mpg although because I've loads more power now I've got my foot down more! So when the noveltys worn off I'll be able to work it out better

If you look at the links I put in post 4 it explains it all in detail and will give you a better understanding of what to do
"Happy tweeking!"

Click to expand...

ChrisPoile said:

This is all good stuff and I would try it if I could get it started, 97MY auto. It was fine until I programmed a second fob using a lynx system. Since then it will not start at all, no diesel to injectors, all the usual stuff ok. Have an anti theft error on the ECU which will not clear and yet all the normal indicators suggest the immobiliser is switching off when ignition is switched on. Any suggestions?
Chris

Click to expand...

swwrob said:

I've done this at the weekend, done 1/2 on torx, no smoke so ended up going a full 2 turns still not smoking more than normal, 1 1/2 on star key and half turn on diaphragm. Still not smoking and seems just as gutless. Bit more responsive low end but still struggle to get past 70.

I am running 275/75/16 bfg a/t's would that be the problem?

Click to expand...