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Old 06-23-2005, 11:01   #1 (permalink)
Bruce Somerton
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Diesel pump

Can anyone tell how to adjust the diesel pump on my 1980 series III. Just
failed the MOT on the smoke test. Have been told it is pumping too much
fuel.
Thanks


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Old 06-23-2005, 18:01   #2 (permalink)
TonyB
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Re: Diesel pump


"Bruce Somerton" <bsomerton@btinternet.com> wrote in message
news:d9eqjh$7bl$1@nwrdmz01.dmz.ncs.ea.ibs-infra.bt.com...
> Can anyone tell how to adjust the diesel pump on my 1980 series III. Just
> failed the MOT on the smoke test. Have been told it is pumping too much
> fuel.
> Thanks

My old s3 had a screw and locknut arrangement on the back of the fuel pump.
Screw in to increase fueling and out to decrease. Best to try half a turn at
a time then test. You may need to adjust idle as well. This is assuming air
filter is clean, tappets set ok and all other service items are OK. Austin
may be able to give further guidance.
TonyB
>
>



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Old 06-23-2005, 18:01   #3 (permalink)
Austin Shackles
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Re: Diesel pump

On or around Thu, 23 Jun 2005 20:39:26 +0000 (UTC), "TonyB"
<Norfolk@soxclara.co.uk> enlightened us thusly:

>
>"Bruce Somerton" <bsomerton@btinternet.com> wrote in message
>news:d9eqjh$7bl$1@nwrdmz01.dmz.ncs.ea.ibs-infra.bt.com...
>> Can anyone tell how to adjust the diesel pump on my 1980 series III. Just
>> failed the MOT on the smoke test. Have been told it is pumping too much
>> fuel.
>> Thanks

>My old s3 had a screw and locknut arrangement on the back of the fuel pump.
>Screw in to increase fueling and out to decrease. Best to try half a turn at
>a time then test. You may need to adjust idle as well. This is assuming air
>filter is clean, tappets set ok and all other service items are OK. Austin
>may be able to give further guidance.
>TonyB


The SIII one is a CAV/Lucas, nesspar? The only one of they I've worked on
had the fuelling adjustment right in the middle - undo a big plug on the
side, diesel falls out, rotate pump 'til holes line up and insert 4mm allen
key into the works, turn screw inside by about 1/4 turn. Pain in the arse,
compared to the bosch ones.

--
Austin Shackles. www.ddol-las.fsnet.co.uk my opinions are just that
"Quos deus vult perdere, prius dementat" Euripedes, quoted in
Boswell's "Johnson".
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Old 06-23-2005, 18:02   #4 (permalink)
Huw
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Re: Diesel pump


"Austin Shackles" <austinNOSPAM@ddol-las.net> wrote in message
news:0l9mb1pfbm2ed3rfuhj86m3a8dmbnc506f@4ax.com...
> On or around Thu, 23 Jun 2005 20:39:26 +0000 (UTC), "TonyB"
> <Norfolk@soxclara.co.uk> enlightened us thusly:
>
>>
>>"Bruce Somerton" <bsomerton@btinternet.com> wrote in message
>>news:d9eqjh$7bl$1@nwrdmz01.dmz.ncs.ea.ibs-infra.bt.com...
>>> Can anyone tell how to adjust the diesel pump on my 1980 series III.
>>> Just
>>> failed the MOT on the smoke test. Have been told it is pumping too much
>>> fuel.
>>> Thanks

>>My old s3 had a screw and locknut arrangement on the back of the fuel
>>pump.
>>Screw in to increase fueling and out to decrease. Best to try half a turn
>>at
>>a time then test. You may need to adjust idle as well. This is assuming
>>air
>>filter is clean, tappets set ok and all other service items are OK. Austin
>>may be able to give further guidance.
>>TonyB

>
> The SIII one is a CAV/Lucas, nesspar? The only one of they I've worked on
> had the fuelling adjustment right in the middle - undo a big plug on the
> side, diesel falls out, rotate pump 'til holes line up and insert 4mm
> allen
> key into the works, turn screw inside by about 1/4 turn. Pain in the
> arse,
> compared to the bosch ones.
>


It's a CAV DPA type rotary pump. It may be overfuelling but it is more
likely that the injectors need tweaking.
Best advice from me is to pour a couple of bottles of Forte diesel additive
in the tank, make sure the mesh in the oil bath air cleaner and the pipework
allow plenty of air to pass, then screw the maximum revs screw back
temporarily until the engine is limited to around 3000 instead of 4500 revs.
This should do the trick and let you sail through with least expense.
If more expensive work is needed, dig a hole and give it a decent burial.

Huw


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Old 06-23-2005, 18:02   #5 (permalink)
SimonJ
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Re: Diesel pump

> Best advice from me is to pour a couple of bottles of Forte diesel
additive
> in the tank, make sure the mesh in the oil bath air cleaner and the

pipework
> allow plenty of air to pass, then screw the maximum revs screw back
> temporarily until the engine is limited to around 3000 instead of 4500

revs.
>

Also try running it on 50/50 paraffin/diesel, just while it is being tested.


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Old 06-23-2005, 18:02   #6 (permalink)
TonyB
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Posts: n/a
Re: Diesel pump

> >> Thanks
> >My old s3 had a screw and locknut arrangement on the back of the fuel

pump.
> >Screw in to increase fueling and out to decrease. Best to try half a turn

at
> >a time then test. You may need to adjust idle as well. This is assuming

air
> >filter is clean, tappets set ok and all other service items are OK.

Austin
> >may be able to give further guidance.
> >TonyB

>
> The SIII one is a CAV/Lucas, nesspar? The only one of they I've worked on
> had the fuelling adjustment right in the middle - undo a big plug on the
> side, diesel falls out, rotate pump 'til holes line up and insert 4mm

allen
> key into the works, turn screw inside by about 1/4 turn. Pain in the

arse,
> compared to the bosch ones.


Ooher, you're probably right. I forgot mine had a replacement engine which
was said to be a 2.25 LR lump but in reality it could have been anything.
Mind you, my little Rover 418 has that sort of arrangement, removing
solenoid first, jump back to avoid shoe full of diesel, then as you say.
Takes about an hour, painful.

TonyB


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Old 06-24-2005, 06:01   #7 (permalink)
Huw
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Posts: n/a
Re: Diesel pump


"SimonJ" <me@mine.net> wrote in message
news:d9fbi3$fnd$1@nwrdmz03.dmz.ncs.ea.ibs-infra.bt.com...
>> Best advice from me is to pour a couple of bottles of Forte diesel

> additive
>> in the tank, make sure the mesh in the oil bath air cleaner and the

> pipework
>> allow plenty of air to pass, then screw the maximum revs screw back
>> temporarily until the engine is limited to around 3000 instead of 4500

> revs.
>>

> Also try running it on 50/50 paraffin/diesel, just while it is being
> tested.
>
>


Of course Simon's is not a serious suggestion in case the OP thinks it is.
Screwing the revs back is perfectly permissible however and so is the Forte
additive. A thousand fewer revs makes all the difference.
A Series Land Rover is never going to be smoke free.

Huw





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Old 06-24-2005, 13:02   #8 (permalink)
4x4 Me
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Re: Diesel pump

>
> Of course Simon's is not a serious suggestion in case the OP thinks it is.
> Screwing the revs back is perfectly permissible however and so is the

Forte
> additive. A thousand fewer revs makes all the difference.
> A Series Land Rover is never going to be smoke free.
>
> Huw


Smoke free Series, is there one? LOL

You can wind back the pump, I have always let My Landy man (Rockingham
Landys) do this when needed, as he always winds it back up to it's correct
place after the MOT, but his MAIN trick is to drop off the fuel filter,
empty and clean it, then fill the bowl with that diesel injector cleaner
(Unipart DX is facking brilliant), then tip the rest in the tank and he then
roars it up the very steep hill outside his workshop and watches all the
gunge vanish out of the exhaust pipe.

Pretty well any Diesel injector flushy stuff should do the job, I just like
that DX, I work at a garage that does MOT's, we put DX in the van every 5-6
months, other than that it's pretty well ignored and badly treated... A rep
selling a miracle new flusher said we could nominate any vehichle to flush,
and emiish test it either side.

Amazingly, we where all gob smacked the smokey diesel astra van passed the
emmish tests with flying colours (1.2%), "new" stuff added, and van grannied
around the local lanes like mad... New test... it had gone UP to 1.3%.....
One very red faced smarmy sales rep


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Old 06-24-2005, 16:01   #9 (permalink)
Huw
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Posts: n/a
Re: Diesel pump


"4x4 Me" <g.loweRemoveThis@removethistoo-ukonline.co.uk> wrote >
> You can wind back the pump, I have always let My Landy man (Rockingham
> Landys) do this when needed, as he always winds it back up to it's correct
> place after the MOT, but his MAIN trick is to drop off the fuel filter,
> empty and clean it, then fill the bowl with that diesel injector cleaner
> (Unipart DX is facking brilliant), then tip the rest in the tank and he
> then
> roars it up the very steep hill outside his workshop and watches all the
> gunge vanish out of the exhaust pipe.
>



Yep. I fill the filter with Forte additive but thought this rather too deep
to post here in my initial reply. There are enough doubting Thomas's anyway.

Huw


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Old 06-24-2005, 17:01   #10 (permalink)
SimonJ
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Posts: n/a
Re: Diesel pump

> >> Best advice from me is to pour a couple of bottles of Forte diesel
> > additive
> >> in the tank, make sure the mesh in the oil bath air cleaner and the

> > pipework
> >> allow plenty of air to pass, then screw the maximum revs screw back
> >> temporarily until the engine is limited to around 3000 instead of 4500

> > revs.
> >>

> > Also try running it on 50/50 paraffin/diesel, just while it is being
> > tested.
> >
> >

>
> Of course Simon's is not a serious suggestion in case the OP thinks it is.
>

Erm........ Yes it is.


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