Clean and test injectors tii?

[Andy74tii]

I have read periodically here that some folks have had their tii injectors cleaned and tested at Bosch diesel repair shops. I'm thinking of doing this while I have everything apart, although I have not had any problems with either the KF or the injectors. What exactly do they do, and what should I be asking them for?

Thanks,

Andy74tii

[bluedevils]

They will test for spray pattern, leakage, and pressure (and probably more). Tell them what the specs are so they can test accordingly. If I remember correctly, KF injectors have a lot higher pressure levels than standard diesel injectors.

[mihajlo]

I just had this done in the San Diego area. It took a while to find a place that could test them properly. I typed in "diesel fuel injector service" in maps.google.com and finally ended up finding someone who could do it. It took some calling around. I can find the number of the place that did it if you need it.

The test is fairly simplistic: mount the injector on test rig, shoot fuel at ~490 psi and watch the spray pattern.

[jgerock]

Graphic courtesy of CD

Andy, if you are feeling brave, you can mostly take injectors apart for cleaning using either a soaking solution or an ultrasonic cleaner (or both). I've done this with very good results.

While you are doing the cleaning, make sure the pressure maintenance valve on the back of the KF pump is clear.

[c.d.iesel]

..." if i remember correctly,

KF injectors have a lot higher

pressure levels than standard

diesel injectors" = FALSE

1970's - 80's M-Benz diesel injectors

open at approx 130 Bar (1900 psi !)

1970's BMW Kugelfischer gas injectors

open at 30 ...38 Bar (425 ....540 psi)

two different bench pressure testers are required

the important goal is that the service center

matches the 4-injectors to near same opening

pressures . That's where your power and

smoothness comes from

-=DANGER=- -=ACHTUNG!=-

NEVER POINT AN INJECTOR AT YOUR BODY,

SKIN, FINGER WHILE OPERATING / TESTING!

IT WILL PENETRATE INTO YOUR BODY!!

[Andy74tii]

Thanks folks this is Judy the info I needed!

[markmac]

Gus Pfister, Pacific Fuel Injection (South San Francisco). He did mine, they looked good, but one wasn't so good, repaired - as good as new.

www.alpinabmw2002.com

[c.d.iesel]

" Thanks folks this is Judy the info I needed! "

whos JUDY?

is that like "Bob's yer Uncle " 's sister ?

[jgerock]

" Thanks folks this is Judy the info I needed! "

whos JUDY?

is that like "Bob's yer Uncle " 's sister ?

I think Andy meant to type "just" instead of "judy". Those darn QWERTY keyboards.

[Andy74tii]

Ha, I didn't even notice that, sorry for the Judy thing. It's this dang newfangled ipad touchpad!

[Collinster742002]

Oh autocorrect, how I hate thee.