Hi all

Over the last few days Sylvia has been ticking over a little lumpy.

Today I connected my IID and obtained the below read outs parked at idle.

i would say those injectors need looking at. they are not coded on them so swap around and verify it is the injectors rather than a electrical gremlin as i know the loom for the injectors can be problematic.
I would say swap Inj2 with Inj1 see if the problem moves with the injector. if it does not then it will be electrical.

now i am not a mechanic but that is what i did on my TD6 after being told 3 injectors needed replacing. i changed an injector but the problem did not move with it. I changed the loom and the problem went away. i got that tip from wheeler dealers!!

Just adding one of them 1 or 6 is a pain to get too so use your noodle and change the easy ones for testing

Hmmm...... I see that the injector loom fails in a lot of instances? I don’t know if it will be worth buying and fitting a new loom in the first instance?

Jim

Gotmoat the same values. As Ive heard IId tool is struggeling on the minus / positive readings of the numbers. The injectors with the high numbers can be compensating. Try to mive around, or do a leak test.

The looms are very easy to test with a multimeter due to the injector ecu being under the bonnet.

There's a part of the loom around the back of the head which is joined by bmw type crimp connectors so if there's no obvious electrical corrosion anywhere then that's where I would start looking.

My car like yours original developed a fault with one injector which then flagged up an issue with one of the others which I'm told is due to the ecu trying to compensate cylinder balance. I just had mine ticking over and pulled each injector plug one by one. The one which made no difference to the tick over was obviously the faulty injector.

Thanks Paul

Is it not a major job pulling an injector?

Jim

Would it work if I just disconnected the plug to the injector from the injector loom? Then when the plug is disconnected if it makes no difference to the engine note it is either that injector or that part of the loom is damaged?

Jim

Yep, just remove the electrical connector on the injector. It will be either or tbh Jim. Once you've identified which injector is at fault I'd the suggest to check the loom with a multimeter and if that checks out ok, the fault will be with the injector. If it doesn't then you've 2 choices, buy a new loom or repair the one you have.

thing is if you remove the injector you will know for sure. You can also get a bottle with a wide neck and visible check how the injector is spraying compared to a good one. simply identify the good injector then plug the suspect one in on the same part of the loom. if it sprays the same you know it is the loom. if it does not it is the injector. then you only spend money on the faulty part.
I cannot remember how much the loom is but it was around the same as 1 injector

Is the loom simply plug and play?

Jim

Yes. You can literally remove it within 30mins.

As others advised check the loom but before you start spending money pull the plugs off make sure there is no corrosion and the small connectors are not spread open too much. Refit and also give each plug a wiggle with the engine running to see if there is a note change. It's easy enough to remove the loom and also do a continuity test. Shame you are not in Oz, I have a good spare loom. No need to program anything when changing injectors or the loom however you can reset the injector adaptive values with the BMW software so no doubt can do the same with IID tool 2007 TDV8 VSE
2003 TD6 gone.
2002 P38a gone
1999 P38a gone
1997 p38a gone
1993 VSE gone
1992 VSE gone
1966 Series 2a with V8 conversion gone

Jayk69 wrote:

You can also get a bottle with a wide neck and visible check how the injector is spraying compared to a good one.

Neither would I. Plus you would need to make up some injector pipes as the standard ones won't reach very far...

If you need to test the spray pattern of the injector it is easy enough to remove the nozzel once the injector is pulled out. I use aerosol brake cleaner aimed into the removed nozzel, the pressure is enough to see the emmiting pattern, it should be 5. Also a good way to diy clean them. I would not recommend this unless you know how to remove the nozzel corectly, its not hard to get right but even easier to mess up a good injector. 2007 TDV8 VSE
2003 TD6 gone.
2002 P38a gone
1999 P38a gone
1997 p38a gone
1993 VSE gone
1992 VSE gone
1966 Series 2a with V8 conversion gone