diseasel

OK, not actually a LR per se...

4-cylinder NA, Bosch pump similar to the 200/300 TDi ones.

the other day, it dropped onto 3 cylinders. Pulled into a layby, found
nothing obvious wrong, and continued, and shortly the 4th pot re-asserted
itself.

yesterday, it did the same, and then after a while, went onto 2 and then
eventually onto 1, which resulted in inadequate forward motion.

got a lift back home (twas onyl about 3 miles) and came back with tools.
Diesel present in pump, both sides of the low-pressure system. Cracked off
injector pipe at #1, turned it over, tightened it up, hey presto, we now
have 2 cylinders playing and it'll run again, and in short order bled the
remaining injectors and restored it to full working order.

Now since the tank was over 3/4 full and the fuel filter appears to be
nearly new, anyone offer suggestions as to how this state of affairs came to
pass? I did wonder if it was sucking air from somewhere.

the initial misfire is regular, not erratic - it misses evenly on one pot,
and later appeared to miss evenly (FSVO even) on 2 pots.




--
Austin Shackles. www.ddol-las.fsnet.co.uk my opinions are just that
"It is a characteristic of the human mind to hate the man one has injured"
Tacitus (c.55 - c.117) Agricola, 45

Austin Shackles wrote:

>
> OK, not actually a LR per se...
>
> 4-cylinder NA, Bosch pump similar to the 200/300 TDi ones.
>
> the other day, it dropped onto 3 cylinders. Pulled into a layby, found
> nothing obvious wrong, and continued, and shortly the 4th pot re-asserted
> itself.
>
> yesterday, it did the same, and then after a while, went onto 2 and then
> eventually onto 1, which resulted in inadequate forward motion.
>
> got a lift back home (twas onyl about 3 miles) and came back with tools.
> Diesel present in pump, both sides of the low-pressure system. Cracked
> off injector pipe at #1, turned it over, tightened it up, hey presto, we
> now have 2 cylinders playing and it'll run again, and in short order bled
> the remaining injectors and restored it to full working order.
>
> Now since the tank was over 3/4 full and the fuel filter appears to be
> nearly new, anyone offer suggestions as to how this state of affairs came
> to
> pass? I did wonder if it was sucking air from somewhere.
>
> the initial misfire is regular, not erratic - it misses evenly on one pot,
> and later appeared to miss evenly (FSVO even) on 2 pots.
>
>
>
>
Sounds like you are getting air in somewhere, possibly aggravated by a
partly blocked filter.
JD

Austin Shackles came up with the following;:

> Now since the tank was over 3/4 full and the fuel filter appears to be
> nearly new, anyone offer suggestions as to how this state of affairs came
> to pass? I did wonder if it was sucking air from somewhere.

A loose joint or crack in the pipework somewhere? Certainly sounds like an
air leak.

Had a mate with similar problem (Not on a Landrover so this might not be the
case) and it turned out to be the swaged bit under the compression nut of
one of the injector pipes which had cracked at the shoulder of the swage.

--
Paul ...
(8(|) Homer Rules ..... Doh !!!

"Austin Shackles" <[email protected]> wrote in message
news:[email protected]...
>
> OK, not actually a LR per se...
>
> 4-cylinder NA, Bosch pump similar to the 200/300 TDi ones.
>
> the other day, it dropped onto 3 cylinders. Pulled into a layby, found
> nothing obvious wrong, and continued, and shortly the 4th pot re-asserted
> itself.
>
> yesterday, it did the same, and then after a while, went onto 2 and then
> eventually onto 1, which resulted in inadequate forward motion.
>
> got a lift back home (twas onyl about 3 miles) and came back with tools.
> Diesel present in pump, both sides of the low-pressure system. Cracked
> off
> injector pipe at #1, turned it over, tightened it up, hey presto, we now
> have 2 cylinders playing and it'll run again, and in short order bled the
> remaining injectors and restored it to full working order.
>
> Now since the tank was over 3/4 full and the fuel filter appears to be
> nearly new, anyone offer suggestions as to how this state of affairs came
> to
> pass? I did wonder if it was sucking air from somewhere.
>
> the initial misfire is regular, not erratic - it misses evenly on one pot,
> and later appeared to miss evenly (FSVO even) on 2 pots.
>
>

Filters may need changing. If this does not work then air leaks are a
possibility. An outside chance of it being due to a faulty lift pump [if
fitted].

Huw

On or around Wed, 1 Jun 2005 12:02:08 +0100, "Huw"
<hedydd[nospam]@tiscali.co.uk> enlightened us thusly:

>
>Filters may need changing. If this does not work then air leaks are a
>possibility. An outside chance of it being due to a faulty lift pump [if
>fitted].

main filter in the engine bay looks new; and should be if as was said it's
had a full service.

Today it ran fine, but leaked diesel from the filter, but I had a look at
that and refitted it correctly and it looks dry now.

It was dark when I refitted it before and it's a fiddly thing to fit,
compared to some.

will see if the problem recurs.
--
Austin Shackles. www.ddol-las.fsnet.co.uk my opinions are just that
"The breezy call of incense-breathing Morn, The swallow twittering
from the strawbuilt shed, The cock's shrill clarion, or the echoing
horn, No more shall rouse them from their lowly bed."
Thomas Gray, Elegy Written in a Country Churchyard.

On or around Wed, 01 Jun 2005 19:06:25 +0100, MVP
<mr.nice@*nospam*softhome.net> enlightened us thusly:

>On Wed, 01 Jun 2005 17:33:46 +0100, Austin Shackles
><[email protected]> wrote:
>
>>It was dark when I refitted it before and it's a fiddly thing to fit,
>>compared to some.
>>
>>will see if the problem recurs.
>
>I had a problem with a badly-seated seal on the filter allowing air
>in, couldn't see any fuel leaking out though. might be worth taking it
>off and checking the seals for dents indicating mis-seated.
>

well, I think it should be OK now. The odd thing is that I've had it for
over a week and done 500+ miles without missing a beat, 's only the other
day that it gave any problems. Mind, I bunged some redex stuff into the
tank, so I suppose that could've dislodged some crud somewhere.

On or around Wed, 01 Jun 2005 10:20:29 +0100, Austin Shackles
<[email protected]> enlightened us thusly:

>
>OK, not actually a LR per se...
>
>4-cylinder NA, Bosch pump similar to the 200/300 TDi ones.
>
>the other day, it dropped onto 3 cylinders. Pulled into a layby, found
>nothing obvious wrong, and continued, and shortly the 4th pot re-asserted
>itself.

some time later...

it only goes wrong if driven consistently above about 55 mph. So, suspected
lift pump. Having looked at where the bugger's mounted, I then decided to
jury-rig an electric one in the pipework to see if it solved the problem.
Some fiddling later, and off I go down the road; sure enough it goes fine.
Hang on, what's that stuff on the rear windows? ****!!! pull in hastily to
find jury-rigged pipe has come apart and merrily spilling expensive stuff on
the road. Looked at it again, hangon, the diesel's comeing out of *that*
pipe, which is th eopposiste way to the way the electric pump is pumping...
oops.

switched 'em over so it pumped in the right direction, and it then didn't
blow apart. However, the fact that it was running OK with the return from
the injector pump dumping fuel down the road led me to think the lift pump
is OK.

Next, pulled the filter housing for a proper look at it. Pipes labelled 1,
2, 3, 4. Some study reveals that some kind soul previously has put the feed
from the lift pump where the return to the tank should be and vice versa.

Swapped 'em over, and so far it's running OK....

--
Austin Shackles. www.ddol-las.fsnet.co.uk my opinions are just that
"Remember that to change your mind and follow him who sets you right
is to be none the less free than you were before."
Marcus Aurelius Antoninus (121-180), from Meditations, VIII.16