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Originally Posted by DieselConvert
Wow. Thanks for all the quick replies. I have heard good things about this forum from the "run you car on vegoil" crowd over at infopop forums, and you guys have not disappointed!
Tom J - what do you mean by lapping? Also since I have your attention - I've come across quite a bit of info from you and others on injectors on this forum - what is the best solution to use for cleaning the injectors ultrasonically? and what do you do with the injectors to make sure ALL the water is gone from the tiny holes. I fear putting them on the pop tester and damaging the holes because of some stubborn water.
In the past I have used carb dip (not in the ultrasonic) to clean them, but I swear, that stuff is responsible for the injector leak in my Peugeot 505TD and I'd rather avoid it if possible.
btw, some day I hope to get a mercedes or three, and have been keeping my eyes open for a 190D turbo 5spd.
thansk again for your help.
-Tony O
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You can use Simple Green (water based) for a less-toxic alternative, or L&R ultrasonic firearms cleaner solution.
Also, water isn't going to "damage" the injector unless it's left in and can oxidize something. Forcing it through the hardened steel orifices by pop testing it won't hurt the injector.
Use compressed air to dry or do a separate ultrasonic bath of break free for a bit (this is what I use to fully de-water them after the compressed air.)
Lapping is basically removing any tiny surface imperfections by running the lapped surfaces over crocus cloth on a granite surface table to give them some semblance of a flatness tolerance.