Td4 injector.

Hi folks.
Quick question can't find anything on removing the actuator from a faulty injector so i can replace it with a working one.
Is this a suitable fix or am i better just replacing the entire injector?

Thanks

Chris

Have you proved it to be an injector for sure?? If so I'd sub the whole injector and dissassemble the faulty one at your leisure. I have seen a you tube of the top coming off but it all looks a bit fragile!!

Not really to be honest.
The solenoid resistance is the same on all 4 of .8 of an ohm.
Haven't found data yet on wether thats correct but when i pull the power supplies individually when its running number 2 hardy changes the engine note.
I will do a running leak back test later

thursodog said:

The solenoid resistance is the same on all 4 of .8 of an ohm.

Click to expand...

It's not actually a solenoid on a common rail diesel. The top section is actually a stack of piezoelectric elements. These elements change shape (get longer) when voltage is applied. This lengthening is just enough to lift the valve off its seat and allow the fuel to flow.

Don't connect a battery to the injectors connector or the elements get damaged. The ECU drives them with a high voltage pulse, which is current limited to a very tight tolerance.

It is very possible to assemble an injector incorrectly and it not work, simply because the movement of the piezoelectric elements is so tiny.

Thanks pal.
I have the hippo up and running.
One damaged thingy ontop of injector 2 and the retaining bracket on injectir 4 had snapped so there was no compression in 4.
Replaced and all running perfectly again.
Got a mate to plug in and clear faults and no new ones appeared so its back to bouncin along farm tracks and fields for now.
Many thanks
Chris

Some noise from the rear as well but if its the diff i will wait till it gets a bit nousiet and change for a reconditioned unit and change the mountings at the same time for less tuan 300 quid.
Looks an easy job.
Apart from that and an underseal we should be good for winter.
C

thursodog said:

rear as well but if its the diff i

Click to expand...

Diff failure isn't as common as IRD failure. However tyres can make a noise that sounds like a diff humming.

Before condemning the diff, you need to check all tyres are identical with least worn on the rear.

Then change the oil in both the IRD and rear diff. Looking at the condition of the oil will give you a clue as to the condition of the bearings. If there's metallic particles in the oil, then the bearings are failing, but dark coloured oil means they're most likely OK.

Mine gets full of white mess - water I think, breather all good, I just change the oil every year.....

Cheers for the advise.
5 identical new tyres all at te same pressure just to make sure.
Proper chunky bjghers so hopefully just that i am hearing.
Will check the oil soon and see whats what.
Cheers
C

Maybe the rear cv's ??