Do Injecters ever go bad+easiest way to remove

[Mark(The Miser)UK]

thanks for that.....i have a leaking one on a engine i just bought....see if it just needs to be tightened a bit...if not il pull the ones from my old engine....those where fairly new...so if they are hard as hell to turn you just work them in and out? is that carbon in the threads?

You need to be sure exactly wheere the injector is leaking before you try and tighten it further.
Wipe with tissue and see if leak is from old leakofff pipe, fuel line nut , injector body at split, or coming up the threads, or even merely old diesel boiling off the threads from an earlier leak. 
Tightening the wrong part is, naturally, unproductive, but will also cause other issues if you are unlucky. 

Threads that truely are carboned up need to be treated with care due to the soft nature of the head threads. That is what the air wrench struggles with. If diesel is bubbling up then it will not be hard to undo.

[guy plain]

 well i have the injecters out....the one that was leaking was leaking past the treads....i ran the car for a hour to see if it would clear up after washing the area....i pit my IP in  a vise...hooked up lines and injecters...all seem to be pooping and good mist comming out....not driblers lol
   the dam PO had used silicone to try to seal them...the one thats was leaking was cranked in tight... others where not all that tight and came out easy.....that 1 1/16 socket made it easy ...thanks for that !!!
  one more problem.....a bently manual is a bit far away for me right now...more due to the time it will take to get here... can some please tell me the tourqe specks for injecters on a 1.6 td ?
    and thanks again for the help... im sure ill be back again...and again .. lol

[Mark(The Miser)UK]

well i have the injecters out....the one that was leaking was leaking past the treads....i ran the car for a hour to see if it would clear up after washing the area....i pit my IP in  a vise...hooked up lines and injecters...all seem to be pooping and good mist comming out....not driblers lol
   the dam PO had used silicone to try to seal them...the one thats was leaking was cranked in tight... others where not all that tight and came out easy.....that 1 1/16 socket made it easy ...thanks for that !!!
  one more problem.....a bently manual is a bit far away for me right now...more due to the time it will take to get here... can some please tell me the tourqe specks for injecters on a 1.6 td ?
    and thanks again for the help... im sure ill be back again...and again .. lol

I assume you mean injector to head with new heatshields, well I think it's about 52lb ft. However, with new shields just nip them up by hand until you feel the shield give way, and then for the resistance to begin to build again. Only do max if they leak. Note sometimes they leak to start with, then within a few days stop.

[guy plain]

 ahh shame to say...with the old heat shields..i live in a small a$$ town far from a dealer that caries any VW parts....so i make due till i go to the city and get the needed parts...but i get to do lots of jobs twice....so they must be good? lmao

[Mark(The Miser)UK]

ahh shame to say...with the old heat shields..i live in a small a$$ town far from a dealer that caries any VW parts....so i make due till i go to the city and get the needed parts...but i get to do lots of jobs twice....so they must be good? lmao

Search for my instructions to reuse. Use 'Mole' clamp grips a 3/8ballbearing and aM17/M19 nut.Redistort so about 1mm  gap when shield on end of an injector.

[guy plain]

darn didnt get that last post in time..lol oh well.its back together and has never run better....cleaned all threads and tourqed to 50 ft,lbs...no leaks ... did a hillbilly pop test...all sprayed the same as far as i could see...no dribles anyways....now onto all the other crap i have to do lol

[rabbitman]

If the heat shields leak you could end up with a really stuck injector or possibly the head could burn where the injector seats.

[guy plain]

oh cheer me up!!! lol they where suposed to be new...but once tourqed thy are used...im kinda new to these small deisels...im going to try to run it as is for now....any thing i should watch out for? some thing might tell me if somethings going wrong?

[Mark(The Miser)UK]

If the heat shields leak you could end up with a really stuck injector or possibly the head could burn where the injector seats.

Surely if the diesel leaks up through the threads it will lube them. Only if diesel leaks from offtakes and sits in a prefectly sealed thread will it dry out? ... Maybe.

Can you please explain how the head burns under the heatshield. Surely you'd need flames coming up the threads.

Noone ever got back to me about how many of their single use heatshields  have leaked, nor how many single use heatshields allowed injectors to stick in.    

I also have an announcement re heat shield reuse. I recently had  one of my ancient shields fail. After an initial panic I bought all I could afford with the change in my pocket... 2 @ £3.20 each. Nearly $5 a piece.    I shall create a thread to explain why I'm more relaxed about the whole thing [shield failed outside the engine  after about 12 reuses]

[rabbitman]

Never seen a head burn under the heat shield but I've heard of it . Plus it kinda makes sense, if you have a gap right there and lots of fire..........it might have more to do with lack of maintenance+corrosion+heat.

[Mark(The Miser)UK]

Never seen a head burn under the heat shield but I've heard of it . Plus it kinda makes sense, if you have a gap right there and lots of fire..........it might have more to do with lack of maintenance+corrosion+heat.

As well as the classic leaning on the injector and breaking the boss off, I wonder if anyone in their efforts to stop leakages have tightened the injector through the ledge that holds the heatshield, snapped it off or merely cracked it or bent it out of shape, leading to those symptoms...

[8v-of-fury]

Mark, are you really one to be giving injector advice?? LMFAO.

[wdkingery]

I had to torque my injectors to well over 100 ftlbs or they would come loose. Didn't seem to have an adverse effect, altho I haven't pulled them sense. 

[rabbitman]

I had to torque my injectors to well over 100 ftlbs or they would come loose. Didn't seem to have an adverse effect, altho I haven't pulled them sense. 

Um, why where they coming loose? You used new heatshields? I've never ever heard of them coming loose, usually people put antiseeze on the threads so they won't get stuck in.

[Mark(The Miser)UK]

Mark, are you really one to be giving injector advice?? LMFAO.

Based upon what?
I've never had injector failure, never had glowplug melt down. I've never broke an injector out.I'm the only one on two VW forums that worked out that expensive injector adjusting washers were simply a waste of money, [Even the Mercedes Guru's got that wrong ]; that properly manipulated heatshields can be reused safely, that there are potential gains available from lower injector pressures, rather than going higher...