Gutless wonder....

On or around Sun, 9 Jul 2006 23:12:36 +0100, "TonyB"
<[email protected]> enlightened us thusly:

>>
>> this is true and in reference to the OP check for a blocked intercooler,
>> although that should affect the performance on boost more than off-idle.
>> wouldn't hurt to run some injector cleaner through it.
>
>Thanks Austin,
>I will try some cleaner but as you say there's no trouble when on boost. I
>have now tweaked up the torx screw under the cap on the diaphragm a few
>turns plus a small tweak on the main fuel screw at the back of the pump.
>It'll get a good test tomorrow on the way to work, but I don't think I've
>over-done it as the tickover didn't change.

hmmm. the thing with the diaphragm is to do with the response to boost
pressure, I think, isn't it? You probably need to tweak that and the main
one in opposite directions - up the fuelling on the main thing, and reduce
the boost response one so it doesn't smoke at higher revs/load? Note, I've
not tried this, but it might be a thing to consider.
--
Austin Shackles. www.ddol-las.net my opinions are just that
Satisfying: Satisfy your inner child by eating ten tubes of Smarties
from the Little Book of Complete B***ocks by Alistair Beaton.

On or around Sun, 9 Jul 2006 23:17:28 +0100, "TonyB"
<[email protected]> enlightened us thusly:

>> torx screw under what cover?
>
>There's a Welsh cover on top of the diaphragm, needs gentle levering off and
>under is a torx screw held by a locknut. It's said to control fuel delivery
>at pre-boost level. Screwing it in increases the delivery of fuel.
>Reccommended is two turns, but I've turned mine in increments until we ar
>now up to about three turns. There is a slight improvement but no smoke at
>low revs so I'll keep going.
>
>Also, it seems possible to adjust the full load supply by removing the
>diaphragm and turning a needle which controils the fuel stop lever. At the
>same time, nearby, is said to be a star wheel adjustment. I haven't tried
>these two yet as they both control on-boost fuel supply and I don't have a
>problem with that.

ah, OK, ignore my other post. I've never investigated.
--
Austin Shackles. www.ddol-las.net my opinions are just that
Satisfying: Satisfy your inner child by eating ten tubes of Smarties
from the Little Book of Complete B***ocks by Alistair Beaton.

> >Thanks Austin,
> >I will try some cleaner but as you say there's no trouble when on boost.
I
> >have now tweaked up the torx screw under the cap on the diaphragm a few
> >turns plus a small tweak on the main fuel screw at the back of the pump.
> >It'll get a good test tomorrow on the way to work, but I don't think I've
> >over-done it as the tickover didn't change.
>
> hmmm. the thing with the diaphragm is to do with the response to boost
> pressure, I think, isn't it?

**No, not the torx screw. That controls fuelling at pre-boost revs.

You probably need to tweak that and the main
> one in opposite directions - up the fuelling on the main thing, and reduce
> the boost response one so it doesn't smoke at higher revs/load? Note,
I've
> not tried this, but it might be a thing to consider.

**Yeah, I think we're thinking on similar lines. I have tested it firther
today and discovered that I've turned up the torx screw a little too much -
I get some smoke at 1200 ish revs in a high gear under heavy load so that
needs backing off a bit. Performance is better though.

Once I've got that balance right I'll try upping the boost response ones -
the needle and the star wheel under the diaphragm cap.

TonyB

>
> ah, OK, ignore my other post. I've never investigated.

It all came from Julian's reference, Austin:
http://forums.lr4x4.com/index.php?showtopic=31

which is a convoluted posting but all the info is in there somewhere. I had
to print it off and take it to bed to concentrate on it!

Thanks Julian, it was just what I needed.

TonyB

"TonyB" <[email protected]> wrote in message
news:[email protected]...
> >
>> ah, OK, ignore my other post. I've never investigated.
>
> It all came from Julian's reference, Austin:
> http://forums.lr4x4.com/index.php?showtopic=31
>
> which is a convoluted posting but all the info is in there somewhere. I
> had
> to print it off and take it to bed to concentrate on it!
>
> Thanks Julian, it was just what I needed.

The invoice is in the post

Julian.