pencil injector

[bobbari123]

Hi!
Does anyone know specs for stanadyne pencil nozzles?
i have a mk3 transit 52kw diesel.
it has a lack of power and it builds up much of black smoke and it has failed the mot.
i just bought the car , but i have owned two mk5 transits before and never had issues with smoke.
so i try to take injectors out and test them but i need to know opening pressures and things like that.
i am going to take also the intake manifold out and clean that and blank the egr, a lot of carbon deposit in intake manifold.

[Altransit]

I'm not sure if this is of any help .........................

viewtopic.php?f=31&t=131802

[bobbari123]

I found the specs.
Opening pressure for new injector 260-270 bar
Service limit 240bar.
You can easily try them with hydraulic hand pump and pressure gauge.
And right adapter fitting

[VMH]

Useful information. Do you know where you can get replacement tips though? I need to re condition mine also but the nearest repair shop is effing miles away.
Be careful when removing the inlet manifold. A bit of carbon came loos on mine and dropped into the cylinder locking up the engine. I had to remove the head to get it out. Not a bad thing as it meant i could decoke the whole top end and re grind the valves but was not happy at the time.

[VMH]

Mine is a 1995 mk2 banana engine. Is it the same?

[bobbari123]

Hi.
some links:
Service manual: http://www.stanadyne.com/docs/misc/9900 ... Manual.pdf
see what injector is in your car: viewtopic.php?f=31&t=131802
Choose your injector type from list to get specs : http://www.dieselpartsworld.com/26632.html

and now just follow the service manual, i don´t have any special tools so i just take them apart and put them into ultrasonic cleaner and carefully clean tip of nozzle from carbon deposit.
also tip of that needle which is inside of nozzle.

[baxi]

have put petrol or kerosene into tank in the past helps emission test - with higher standards coming in euro 4 / 5 / 6 ect , and fuel is not the same these days no heavy oil , even the smell is different , governments want us to change up electric (joke ) leyland daf tried that in the 70s 7.5 ton could carry one ton .

[bobbari123]

Hi.
I succesfully serviced my injectors.
There was a lot of black smoke coming from exhaust and car was failed mot emission test and has been standing 7 years.
I bought it and first thing on my what to do list is now done.
No smoke from exhaust.
I carefully grind tips of needles under microscope with 4000 grid sandpaper without touching sealing surface just to get rid of carbon.
And outside the head of the nozzle i cleaned with brass brush.
And then i put them to ultrasonic cleaner and after that back together and adjusted opening pressure and lift and now absolutely no smoke anymore.