My Discovery is a Slug

Fellas, I still haven't cleaned out the fuel sedimenter. Diggers was kind enough to remind me of a problem if the tank was full(it was). But what I did do was undo the drain screw at the base of the sedimenter and a drip of fuel came out I then screwed it back on, and found the screw had not been screwed in all the way in the first place. Now the beast is not lagging on hills and is actually keeping a reasonable pace.
I'll still check out the rest of the system.
I suspect it was sucking air when under load and not getting enough fuel to make it go.

john

Typical landrover, a loose screw or wire [img]style_emoticons/<#EMO_DIR#>/laugh.gif[/img]

Glad to hear that you have found some / all of the problem, I can see how lack of fuel would slow the car down :roll:

Good to hear that it is an improvement [img]style_emoticons/<#EMO_DIR#>/biggrin.gif[/img]

Normally always the easiet fix, but the hardest one to find

I had a 300tdi for 244,000ks.
I also drove a few other during that time and spoke to many owners.
It is Normal, for the 300 to pull away slowly initiailly, (esp when pulling into traffic with car bearing down feeling)
Cleaning or increasing the intercooler size will not help initial pullaway.
I cleaned my intercooler a couple of times. Yes there was a little bit of oil in it but it also didnt affect highway performance. (oil in there is also normal)

What did improve take off a bit was to have the no boost setting changed on the starwheel in the aneroid housing so more fuel comes in off boost.

This didnt make it a rocket but helped abit. The aircon always held it back so I made a switch on the throttle that turned air off under full throttle.

Bazzle [img]style_emoticons/<#EMO_DIR#>/smile.gif[/img]

Bazzle - WELCOME

mate take a look at New members intros and tell us about yourself

welcome again

mick

I have a 1993 3.5 tlr discovery and mine recently as 5 days ago I went to Adelaide in the discovery and when i started to go up the Adelaide hills this thing just died in the a.. I have only had the landy for about two weeks and i am not very happy with thew performance so far. I previous to the trip changed the air/fuel filters put new plug leads checked the timing and all seemed ok but this thing allways feels like it has a sluggish gearbox and its automatic by the way . I took the plugs out and found they were a bit sooted up and cleaned them but it did not make any difference.I had a thought that the auto fluid filter might be blocked and not letting enough fluid through the filter effecting the pressures in the transmission but haven&#96;t serviced it as yet .fuel ecconomy on the trip equated to about 350 - 400 on 3/4 tank of petrol even with the problem i mentioned before any one got any ideas on this one or is this a common problem with the discovery(I drive a semitrailer and this pulls better) . some help on this matter would be appreciated by anyone (Not happy jan) If anyone has an idea on this problem you can also email me at ( sunliner@bigpond.net.au ) Bruno Schneider

Hi and welcome to AULRO

the miles per gallon is about right for the model so it really shouldnt be timing, or mixture or slipping auto.

how many miles on the clock?

many disco's of that vintage wear in the camshaft and the result is lack of get up and go even tho every thing else seems okay.

a good mechanic with a vacuum gauge should be able to diagnose whether it is camshaft or not, i imagine.

many people replace the camshaft with the 3.9 ltr model as it gives the 3.5 quite a lift.

another thing to look at may be fuel pressure or worn injectors.

hope it all works out for you.

Incisor is right up to a point,, (cue mental image) 8O
A good physical by someone reputable is probably in order,
then its a matter of physics. 2.5t pulled by 3500'ccs is never gunna be a rocket, dont let it labour, if it falls below 2500-2600rpm kick it hard, but why am I telling a pro how to shuffle gears? :roll:
These V8's will happily sit on 3 grand all day,
just sit back and watch the scenery ( and fuel guage) go by.
8)

TDI's are not quick until they come on boost. The intercooler should be cleaned internally every 60k km or so. Once the cooler is clean you need to ensure the blower is making the right boost. Fit a t piece in the hose to the waste gate, it should make 11-14lb or so under load . You can tweak some turbo lag out by adjusting the smoke valve in the top of the pump a bit.