Disco 2 Replaced head new problems

ldrego · Dec 12, 2015

I have just had the head on my 03 disco replaced. The head has been tested before.fitting. Since fitting, the car struggles to fire up when cold, taking up to 30 seconds to start. The garage has told me to check to see if the fuel regulator is leaking which I will do tomorrow.
They had switched the head earlier that week for one that they had believed was working bur it was ropey.
Any other thoughts before I go out into the cold. Fuel filter was replaced too.
Thanks in advance.
Oh the car starts better once it has ran for a while.

sierrafery · Dec 12, 2015

Did they fit the injectors in the same order? , also the glow plugs were verified? though based on the following statement

They had switched the head earlier that week for one that they had believed was working bur it was ropey.

i have serious doubts about theyr reliability

johnlad · Dec 12, 2015

Id say poorly fitted injector seals and washers

ER1C · Dec 12, 2015

ldrego said:
I have just had the head on my 03 disco replaced. The head has been tested before.fitting. Since fitting, the car struggles to fire up when cold, taking up to 30 seconds to start. The garage has told me to check to see if the fuel regulator is leaking which I will do tomorrow.
They had switched the head earlier that week for one that they had believed was working bur it was ropey.
Any other thoughts before I go out into the cold. Fuel filter was replaced too.
Thanks in advance.
Oh the car starts better once it has ran for a while.

Fuel Regulator... i.e regulates fuel not to do with cold start. How long have you ran it for ?

ldrego · Dec 12, 2015

New glow plugs were fitted at the same time. I prices the problem within 30 miles of driving it. I have driven say, a total of 60 miles,
I am thinking, leaking injector seals if they have been reused copper washers. I would imagine, that would give me, diesel in the oil or oil in the diesel respectively. Is that right?

sierrafery · Dec 12, 2015

injector o-rings would let fuel in oil that's all and leaking copper washers would let combustion gasses into the fuel rail mixing up the whole fuel delivery system = starting and running issues... copper washers are not something to be reused after once fitted and injectors torqued on them, not even if they were fitted new to that faulty head then removed without running the engine... my doubts about those mechanics are becoming more serious... what about that question about the injector's order?

ldrego · Dec 12, 2015

New washers and seals were used and torqued down. chap says that the only thing that has changed is the head so it has to be the heads he is going to look at it again this week. Have to say he is not ditching ownership of the problem which is very,good.

sierrafery · Dec 12, 2015

if the head was changed it means the injectors were swapped too... i insist, were they fitted in the same order? cos the codes are stored in the ECU in a certain way, mixing the positions of the injectors will mix up the management

ldrego · Dec 12, 2015

Do you think that could be the case? That would be some error to have been made. Is it difficult to reprogram these using the lynx? Could I tell if they are in the right order with the lynx?

johnlad · Dec 12, 2015

sierrafery said:
if the head was changed it means the injectors were swapped too... i insist, were they fitted in the same order? cos the codes are stored in the ECU in a certain way, mixing the positions of the injectors will mix up the management

But that wouldn't make it difficult to start, it just fine tunes the injector tolerances

sierrafery · Dec 12, 2015

I've seen cases when it did, and it idled as sh*t too, i'm not saying that's the case here but it's good to be ruled out anyway, you can't check with tester unless you remove the cover and see what code is on the solenoid and what's stored in the ECU, just ask them if they took care of that or not they should know what they did...if you have lynx didnt you find any fault codes stored? put ignition on and read the fuel temp live data and engine speed while cranking ... is there black smoke after it starts?

markomate2 · Dec 12, 2015

johnlad said:
But that wouldn't make it difficult to start, it just fine tunes the injector tolerances

Id agree with that. My injectors were rebuilt and the codes probably dont mean much now, one was also replaced.
I haven't changed anything in the ECU yet, but she starts first turn and no smoke at all.
BUT initial starting after the rebuild did need 5xfull purge cycle and lots of cranking.
Have you checked your battery? Lots of info on here about cranking pulling the voltage down, also check the CPS wiring is ok, also a "noisy" starter can affect the CPS signal giving bad starting.
If there was something wrong with the head, IMO it would be a problem whether the car was hot or cold.
Mark

shaggydefender · Dec 12, 2015

if you need any parts mate i have a full running disco 2 TD5 here , starts instantly and is able to be tested for peice of mind , what was the reason you head was swapped? cooked or diesel in oil?

ldrego · Dec 12, 2015

shaggydefender said:
if you need any parts mate i have a full running disco 2 TD5 here , starts instantly and is able to be tested for peice of mind , what was the reason you head was swapped? cooked or diesel in oil?

Diesel in the oil. Where about are you based..

shaggydefender · Dec 12, 2015

ldrego said:
Diesel in the oil. Where about are you based..

based in pembrokeshire/west wales , can do you the full running engine with all ancillieeries delivered for £570

ldrego · Dec 12, 2015

I'll run the lynx on it tomorrow when I get a moment. On a long shot, the fuel has been allowed to run to the reserve. It's been topped up now and it seems to be starting a little better, is it possible that crap blocking the fuel lines could have caused the symptoms?

ldrego · Dec 12, 2015

shaggydefender said:
based in pembrokeshire/west wales , can do you the full running engine with all ancillieeries delivered for £570

That's a bargain price but as it stands, it looks as if the mechanic who did the job is going to sort it out. I out of interest is it a p15 td5?

shaggydefender · Dec 12, 2015

its a 10p engine but has had the metal dowels fitted , cracking engine , instant starting , clean oil and no smoke

, if you need anything else give me a shout as its still complete so all parts there at the moment

sierrafery · Dec 13, 2015

ldrego said:
I'll run the lynx on it tomorrow when I get a moment. On a long shot, the fuel has been allowed to run to the reserve. It's been topped up now and it seems to be starting a little better, is it possible that crap blocking the fuel lines could have caused the symptoms?

run a purging sequence on it, 6 consecutive full throttles with ignition on II then wait untill the MIL stops flashing... and replace the air bleed valve in the filter head's rear outer port(WJN500110)...then purge again

Disco 2 Replaced head new problems

ldrego

Active Member

sierrafery

Well-Known Member

johnlad

Well-Known Member

ER1C

Well-Known Member

ldrego

Active Member

sierrafery

Well-Known Member

ldrego

Active Member

sierrafery

Well-Known Member

ldrego

Active Member

johnlad

Well-Known Member

sierrafery

Well-Known Member

markomate2

Well-Known Member

shaggydefender

Active Member

ldrego

Active Member

shaggydefender

Active Member

ldrego

Active Member

ldrego

Active Member

shaggydefender

Active Member

sierrafery

Well-Known Member

Similar threads