gstuart wrote:

Discomadness wrote:

gstuart wrote:

Ref the fault code

Looked it up and comes up with

P0263 - Cylinder 1 Contribution/Balance Fault


Possible causes
Dirty Fuel Injector 1
Faulty Fuel Injector 1
Plugged Fuel Injector 1
Fuel injector 1 harness is open or shorted
Fuel injector 1 circuit poor electrical connection

https://www.engine-codes.com/p0263.html

Injector harness looks like part number LR006465, but sit down as it retails at £1200, can u bell out the existing loom wire by wire to ensure it’s sound

Hi mate !

Wow you been busy !

I’m thinking wiring as I know it’s not faulty injector. I’ve tried a new one and a good known second hand one etc. I believe it’s wiring related.

Sorry to sound like a fool but what do you mean Bell the wires out ? Continuity test is it ?
Crikey didn’t realise it was a separate harness. The plot thickens eh.

The pipes are ok I think.

I’ll have a nose in the morning to trace the wiring through.

Hiya

Another thought , have u tried running the engine with an external diesel can, to eliminate the fuel tank fuel

Plus are these ur injectors plse , thks , Siemens 4H-2Q-9K546AEG1-UHF

Is it right the injectors between an EU3 and EU4 are different , EU4 HPFP runs at higher pressure on a 07 , not 100% on that though , suppose I was just thinking to ensure the injectors were indeed EU4 because of the year

I’ll get my coat

Mine are the euro 4 injectors mate, I haven’t tried running from a can, never even thought of it to be honest because of the In tank pump, I was worried about annoying the management system in some way. Also I have done a leak back test and all the injectors were giving back about the same amount.

Don’t know if that means anything though.

Discomadness wrote:

gstuart wrote:

Discomadness wrote:

gstuart wrote:

Ref the fault code

Looked it up and comes up with

P0263 - Cylinder 1 Contribution/Balance Fault


Possible causes
Dirty Fuel Injector 1
Faulty Fuel Injector 1
Plugged Fuel Injector 1
Fuel injector 1 harness is open or shorted
Fuel injector 1 circuit poor electrical connection

https://www.engine-codes.com/p0263.html

Injector harness looks like part number LR006465, but sit down as it retails at £1200, can u bell out the existing loom wire by wire to ensure it’s sound

Hi mate !

Wow you been busy !

I’m thinking wiring as I know it’s not faulty injector. I’ve tried a new one and a good known second hand one etc. I believe it’s wiring related.

Sorry to sound like a fool but what do you mean Bell the wires out ? Continuity test is it ?
Crikey didn’t realise it was a separate harness. The plot thickens eh.

The pipes are ok I think.

I’ll have a nose in the morning to trace the wiring through.

Hiya

Another thought , have u tried running the engine with an external diesel can, to eliminate the fuel tank fuel

Plus are these ur injectors plse , thks , Siemens 4H-2Q-9K546AEG1-UHF

Is it right the injectors between an EU3 and EU4 are different , EU4 HPFP runs at higher pressure on a 07 , not 100% on that though , suppose I was just thinking to ensure the injectors were indeed EU4 because of the year

I’ll get my coat

Mine are the euro 4 injectors mate, I haven’t tried running from a can, never even thought of it to be honest because of the In tank pump, I was worried about annoying the management system in some way. Also I have done a leak back test and all the injectors were giving back about the same amount.

Don’t know if that means anything though.

Been following your post since the start..keep it up and great watching you and Garry exchange posts..he is like you own parts dictionary at the moment! (hope back gets better soon mate )
Anyway back to point...ref using a can..it would indeed work and doubt it would mess with the electrics..but then again this is a disco!...BUT..make sure you have some sort of in line filter if your going to bypass the one on car!Dont want crap going straight to injectors! If you spotted one of my previous topics i had an issue with what i thought was possibly teh in tank pump again..turned out to be the schraeder valve leaking and drawing air into system...currently i have removed it and bypassed with some hose until i find a suitable replacement..its running great at moment (oh no iv done it now! ) But my thought was you could easily warm the pipes going to and from the valve on yours,remove them and run a temp bypass with a feed from a can,through an in line filter and direct into the lp fuel system.You would need to remove fuse for in tank pump of course.Just a thought...

timmyt79 wrote:

Discomadness wrote:

gstuart wrote:

Discomadness wrote:

gstuart wrote:

Ref the fault code

Looked it up and comes up with

P0263 - Cylinder 1 Contribution/Balance Fault


Possible causes
Dirty Fuel Injector 1
Faulty Fuel Injector 1
Plugged Fuel Injector 1
Fuel injector 1 harness is open or shorted
Fuel injector 1 circuit poor electrical connection

https://www.engine-codes.com/p0263.html

Injector harness looks like part number LR006465, but sit down as it retails at £1200, can u bell out the existing loom wire by wire to ensure it’s sound

Hi mate !

Wow you been busy !

I’m thinking wiring as I know it’s not faulty injector. I’ve tried a new one and a good known second hand one etc. I believe it’s wiring related.

Sorry to sound like a fool but what do you mean Bell the wires out ? Continuity test is it ?
Crikey didn’t realise it was a separate harness. The plot thickens eh.

The pipes are ok I think.

I’ll have a nose in the morning to trace the wiring through.

Hiya

Another thought , have u tried running the engine with an external diesel can, to eliminate the fuel tank fuel

Plus are these ur injectors plse , thks , Siemens 4H-2Q-9K546AEG1-UHF

Is it right the injectors between an EU3 and EU4 are different , EU4 HPFP runs at higher pressure on a 07 , not 100% on that though , suppose I was just thinking to ensure the injectors were indeed EU4 because of the year

I’ll get my coat

Mine are the euro 4 injectors mate, I haven’t tried running from a can, never even thought of it to be honest because of the In tank pump, I was worried about annoying the management system in some way. Also I have done a leak back test and all the injectors were giving back about the same amount.

Don’t know if that means anything though.

Been following your post since the start..keep it up and great watching you and Garry exchange posts..he is like you own parts dictionary at the moment! (hope back gets better soon mate )
Anyway back to point...ref using a can..it would indeed work and doubt it would mess with the electrics..but then again this is a disco!...BUT..make sure you have some sort of in line filter if your going to bypass the one on car!Dont want crap going straight to injectors! If you spotted one of my previous topics i had an issue with what i thought was possibly teh in tank pump again..turned out to be the schraeder valve leaking and drawing air into system...currently i have removed it and bypassed with some hose until i find a suitable replacement..its running great at moment (oh no iv done it now! ) But my thought was you could easily warm the pipes going to and from the valve on yours,remove them and run a temp bypass with a feed from a can,through an in line filter and direct into the lp fuel system.You would need to remove fuse for in tank pump of course.Just a thought...

Hiya buddy !

That’s a good point actually. Could a small air draw do it ? Interesting. What I find interesting is that it doesn’t matter that I’ve swapped the injectors around etc fitted a new one and moved it about and the values all stay the same so really it can’t be injectors.... can it ? Ah who knows. Sure these Landrover’s are not made in production lines. I’m convinced they are born of witchcraft. They must be.

Really greatful of any ideas and advice. Gives me an idea of direction to go in. Thanks

Discomadness wrote:

Hi budd,

I get you, I did fit a brand new tccm back in August. I’m convinced it’s wiring. Don’t know why I just have a feeling. What sort of resistance values should I be looking at ? Continuity I’ve always done with the “beep” setting. I’m not the best with electronics. it’s all confusing.

In other news...

Picked up hub upper and lower bushes for the rear and some other bits, looking forward to attacking the back end. Mechanical work I can do. Electronics.... not so much. Lol.

Hi mate

Ur just looking for continuity on the wires so indeed a beep should sound as u test each wire

At least then testing each and every wire in the loom u then know it’s sound, inc inspection of the pins

I’ll see if I can find the PIN numbers for u, so u know 100% it’s ok

Keep up the good work good sir

  

Discomadness wrote:

timmyt79 wrote:

Discomadness wrote:

gstuart wrote:

Discomadness wrote:

gstuart wrote:

Ref the fault code

Looked it up and comes up with

P0263 - Cylinder 1 Contribution/Balance Fault


Possible causes
Dirty Fuel Injector 1
Faulty Fuel Injector 1
Plugged Fuel Injector 1
Fuel injector 1 harness is open or shorted
Fuel injector 1 circuit poor electrical connection

https://www.engine-codes.com/p0263.html

Injector harness looks like part number LR006465, but sit down as it retails at £1200, can u bell out the existing loom wire by wire to ensure it’s sound

Hi mate !

Wow you been busy !

I’m thinking wiring as I know it’s not faulty injector. I’ve tried a new one and a good known second hand one etc. I believe it’s wiring related.

Sorry to sound like a fool but what do you mean Bell the wires out ? Continuity test is it ?
Crikey didn’t realise it was a separate harness. The plot thickens eh.

The pipes are ok I think.

I’ll have a nose in the morning to trace the wiring through.

Hiya

Another thought , have u tried running the engine with an external diesel can, to eliminate the fuel tank fuel

Plus are these ur injectors plse , thks , Siemens 4H-2Q-9K546AEG1-UHF

Is it right the injectors between an EU3 and EU4 are different , EU4 HPFP runs at higher pressure on a 07 , not 100% on that though , suppose I was just thinking to ensure the injectors were indeed EU4 because of the year

I’ll get my coat

Mine are the euro 4 injectors mate, I haven’t tried running from a can, never even thought of it to be honest because of the In tank pump, I was worried about annoying the management system in some way. Also I have done a leak back test and all the injectors were giving back about the same amount.

Don’t know if that means anything though.

Been following your post since the start..keep it up and great watching you and Garry exchange posts..he is like you own parts dictionary at the moment! (hope back gets better soon mate )
Anyway back to point...ref using a can..it would indeed work and doubt it would mess with the electrics..but then again this is a disco!...BUT..make sure you have some sort of in line filter if your going to bypass the one on car!Dont want crap going straight to injectors! If you spotted one of my previous topics i had an issue with what i thought was possibly teh in tank pump again..turned out to be the schraeder valve leaking and drawing air into system...currently i have removed it and bypassed with some hose until i find a suitable replacement..its running great at moment (oh no iv done it now! ) But my thought was you could easily warm the pipes going to and from the valve on yours,remove them and run a temp bypass with a feed from a can,through an in line filter and direct into the lp fuel system.You would need to remove fuse for in tank pump of course.Just a thought...

Hiya buddy !

That’s a good point actually. Could a small air draw do it ? Interesting. What I find interesting is that it doesn’t matter that I’ve swapped the injectors around etc fitted a new one and moved it about and the values all stay the same so really it can’t be injectors.... can it ? Ah who knows. Sure these Landrover’s are not made in production lines. I’m convinced they are born of witchcraft. They must be.

Really greatful of any ideas and advice. Gives me an idea of direction to go in. Thanks

I would say YES...its amazing how many problems just a small air leak can cause I work with 800hp Caterpillar marine engines and they are VERY susceptible..especially at night..in a storm at sea!
My schraeder valve was only dripping/leaking slightly but caused all sorts of headaches...would start ok and run fine but as soon as you stopped and left it for literally a few minutes nada...no chance of restarting without bleeding the whole system..hopefully before the battery drained!
Maybe a new avenue to explore,plus it doesnt cost anything more than time!
Any questions feel free to ask

gstuart wrote:

Hi timmyt79

Many thks firnthe kind compliment , have been trying to keep disco going with finding parts for him

Can’t have him slacking off u know

Plus it gives me something to do and appreciate the good wishes ref my back

Great the can idea hopefully won’t screw the system up, suppose a way of eliminating the system step by step , putting the can up high and indeed good point pulling the fuse for the tank pump and using an inline filter

Will find if I can the PIN numbers of the injector loom as I thought then at least if that’s fully tested should show up any errors

Thks again

Your more than welcome..always found you to be very kind and willing to help so good on you
As i mentioned in post...air leak hunting costs nothing more than time...lots cheaper than new injectors etc!
Hey if your bored feel free to find the part number for the schraeder valve..i cant find one anywhere!