Been having a look around for a second hand engine. There's 2 options local to me, first is from a 2006 td4 sport with 136k on the clock still in place so can hear it running. Won't come with injectors/turbo just wiring loom and hp pump it's up for 185 quid.

The other option is a 2002 td4 not sure of milage but the hp pump has failed ando the owner has upgraded to a later model can have the complete vehicle with out the wheels for 500 quid

I'll probably take it to a garage to have the engine swapped if I do go for it as I can't really be arsed to do it myself on the drive.

Just going to see what happens when the new maf is fitted
 
Gaj1612 said:
Been having a look around for a second hand engine. There's 2 options local to me, first is from a 2006 td4 sport with 136k on the clock still in place so can hear it running. Won't come with injectors/turbo just wiring loom and hp pump it's up for 185 quid.

The other option is a 2002 td4 not sure of milage but the hp pump has failed ando the owner has upgraded to a later model can have the complete vehicle with out the wheels for 500 quid

I'll probably take it to a garage to have the engine swapped if I do go for it as I can't really be arsed to do it myself on the drive.

Just going to see what happens when the new maf is fitted
Click to expand...

I'm not sure fitting another engine is going to solve the problem. Especially if the replacement engine doesn't come with injectors.
Best bet is to get the whole vehicle to a diesel injection specialist for a proper diagnosis. There are tests that can be run using diagnostic equipment, that can measure injector offset and compensation. This is where I would be heading, if the new MAF doesn't cure the problem.
 
Nodge68 said:
I'm not sure fitting another engine is going to solve the problem. Especially if the replacement engine doesn't come with injectors.
Best bet is to get the whole vehicle to a diesel injection specialist for a proper diagnosis. There are tests that can be run using diagnostic equipment, that can measure injector offset and compensation. This is where I would be heading, if the new MAF doesn't cure the problem.
Click to expand...
Thanks mate, at the moment it's just an option I'm considering out of frustration. I've been and seen a BMW specialist today and he reckons it's the injectors. I'll try and find someone local that can have a look at it. New maf will be here tomorrow and will be fitted tomorrow evening aswell
 
Nodge68 said:
I'm not sure fitting another engine is going to solve the problem. Especially if the replacement engine doesn't come with injectors.
Best bet is to get the whole vehicle to a diesel injection specialist for a proper diagnosis. There are tests that can be run using diagnostic equipment, that can measure injector offset and compensation. This is where I would be heading, if the new MAF doesn't cure the problem.
Click to expand...
ill be booking it in with this company tomorrow if the maf doesnt sort it http://www.bclelectrodiesel.com/index.php

if it turns out to be injectors ill buy however many i need from them as im sick of dealing with eurocarparts. hopefully itll be sorted soon as its driving me nuts.

nearly set fire to it this afternoon. as i was leaving the bmw place the tc and hdc light came on the dash. luckily it went out after wiggling the connector on the hdc button.
 
Gaj1612 said:
ill be booking it in with this company tomorrow if the maf doesnt sort it http://www.bclelectrodiesel.com/index.php

if it turns out to be injectors ill buy however many i need from them as im sick of dealing with eurocarparts. hopefully itll be sorted soon as its driving me nuts.

nearly set fire to it this afternoon. as i was leaving the bmw place the tc and hdc light came on the dash. luckily it went out after wiggling the connector on the hdc button.
Click to expand...
Make sure you get a written report on the quality of the injectors so you can take them back for a refund if they are bad. Mind you I just remembered the injector price includes you handing them back your old ones so effectively you'll still be out of pocket. :mad:
 
If they are faulty and the shop replaces them - still take them back for warranty swap - eventually you might get some that work OK as spares!
 
Alibro said:
Make sure you get a written report on the quality of the injectors so you can take them back for a refund if they are bad. Mind you I just remembered the injector price includes you handing them back your old ones so effectively you'll still be out of pocket. :mad:
Click to expand...

yeah usually have to pay a surcharge on them, tbh i dont mind as long as it runs properly.
 
GrumpyGel said:
If they are faulty and the shop replaces them - still take them back for warranty swap - eventually you might get some that work OK as spares!
Click to expand...
dont think ill be that lucky but ill definitely try. at the rate this thing is needing them could do with buying shares in the company
 
Might be worth checking the O ring in the HP fuel pump - its possible it might be disintegrating and sending particles through the fuel system that are clogging the injectors. I don't know if that was already discussed on this thread or somewhere else! If its true though, it might clog any others that injectors that this diesel service place install.
 
GrumpyGel said:
Might be worth checking the O ring in the HP fuel pump - its possible it might be disintegrating and sending particles through the fuel system that are clogging the injectors. I don't know if that was already discussed on this thread or somewhere else! If its true though, it might clog any others that injectors that this diesel service place install.
Click to expand...

i was actually just reading a thread about this. for the £8 that it costs i think it would be silly not to change it. looks a bit of a fiddle to change though, ill order one up and get it changed.
 
Nodge68 said:
I'm not sure fitting another engine is going to solve the problem. Especially if the replacement engine doesn't come with injectors.
Best bet is to get the whole vehicle to a diesel injection specialist for a proper diagnosis. There are tests that can be run using diagnostic equipment, that can measure injector offset and compensation. This is where I would be heading, if the new MAF doesn't cure the problem.
Click to expand...
fitted the new maf and although it hasnt cured the problem, its quite clear it needed changing. theres a smooth power delivery from low rpm where as before it was gutless under 2k rpm. feels a lot better now. so ill ring the diesel specialist place tomorrow and book it in.

also found some more vac pipes that need changing as theyre nearly worn through. ill replace the whole lot with silicone on pay day. would you happen to know the ID of the vac pipe?

thanks for everyones help so far.
 
If low end torque has improved, then the MAF signal was week. The Ebay MAF I fitted to mine, made a similar increase in low end torque. It should stop it smoking too.
Vac pipes are 3.2mm but some are 4mm.
 
Nodge68 said:
If low end torque has improved, then the MAF signal was week. The Ebay MAF I fitted to mine, made a similar increase in low end torque. It should stop it smoking too.
Vac pipes are 3.2mm but some are 4mm.
Click to expand...
Low end has improved but before fitting the new one there was a lack of power at low rpm then a sudden surge of power and nothing top end. Now it's a lot smoother and pulls from low rpm all the way through.
Thanks I'll order some up soon
 
Gaj1612 said:
Low end has improved but before fitting the new one there was a lack of power at low rpm then a sudden surge of power and nothing top end. Now it's a lot smoother and pulls from low rpm all the way through.
Thanks I'll order some up soon
Click to expand...
The reason for the power loss at low and higher RPM is all down to the way the ECU interprets the MAF signal.
At low Rpm the low MAF signal causes the ECU to hold back on fuelling the engine. Probably to reduce black smoke production. This lack of fuel limits the exhaust gas available to spool up the turbo, until the the Rpm is higher.
The mid Rpm point allows sufficient fuel for correct turbo spool and reasonable power too.
However as the Rpm climbs higher, the low MAF signal again limits fuel, and so limits high Rpm power.
Fitting the new MAF allows the ECU to correctly fuel the engine, boosting low Rpm exhaust volume, to spool the turbo correctly, boosting low Rpm torque. Mid Rpm torque will improve too, but because the low torque has increased, there's not a big jump in power, so mid Rpm doesn't feel improved. High Rpm torque will improve markedly as fuelling will be correct for a decent torque output.
So once the injectors are sorted, you should be up to a decent level of performance again. Hopefully without all that diesel clatter.
 
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Nodge68 said:
The reason for the power loss at low and higher RPM is all down to the way the ECU interprets the MAF signal.
At low Rpm the low MAF signal causes the ECU to hold back on fuelling the engine. This limits the exhaust gas available to spool up the turbo, until the the Rpm is higher. The mid Rpm point allows sufficient fuel for correct turbo spool and reasonable power too. However as the Rpm climbs higher, the low MAF signal again limits fuel, and so limits high Rpm power.
Fitting the new MAF allows correct low Rpm fuelling, which increases the exhaust available to spool the turbo correctly, boosting low Rpm torque. Mid Rpm torque will improve too, but because the low torque has increased, there's not a big jump in power, so mid Rpm doesn't feel improved. High Rpm torque will improve markedly as fuelling will be correct for a decent torque output.
So once the injectors are sorted, you should be up to a decent level of performance again. Hopefully without all that diesel clatter.
Click to expand...
Thanks for that mate, learn something new every day.
I was surprised how much difference it made tbh, I was towing a trailor last week and thought I was going to have to get out and push, apart from the clattering I'd be quite confident to tow with it again. Hopefully there injectorshould can be sorted easily (by that I mean cheap haha) and she'll be good to go again.
 
Gaj1612 said:
hi mate, yes its done around 157k, i had a look at the pulley this afternoon after reading other threads on here. theres no obvious signs that the pulley is shagged. doesnt wobble or anything. there is no record of it being changed though.
Click to expand...

Sorry I haven't got back to you quicker, I noticed it my engine was getting noisier but thought it just needed a service which I did and it seem to quieten down this could of been to the newer oil but after a month or so it came back, only after getting underneath to check to see if was fouling on something did I notice where the noise was coming from checked for movement but there didn't seem that much but once it was changed the engine noise reduced......that was a year ago.
 
marti666 said:
Sorry I haven't got back to you quicker, I noticed it my engine was getting noisier but thought it just needed a service which I did and it seem to quieten down this could of been to the newer oil but after a month or so it came back, only after getting underneath to check to see if was fouling on something did I notice where the noise was coming from checked for movement but there didn't seem that much but once it was changed the engine noise reduced......that was a year ago.
Click to expand...
What did you change?
 
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