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On 8 Jan 2006 at 23:44, Constantino Tobio wrote: > By the way, 3 of the 4 "old" spares have yellow tips, and I can't see > where they say Bosch or VW on them. Some sort of odd 3rd party, perhaps? I think some early Bosch injectors came with no tips, then they came with black tips, and finally they came with yellow tips. In general, the tip color matches the color of the molded plastic on the inlet end. There are certainly aftermarket replacements out there, but I've had enough trouble with them that I would never use them. Genuine Bosch injectors have the Bosch logo and part number on one flat side of the molded plastic on the inlet end. If the injector was distributed thru the VW system, then the VW logo and part number will also be on the opposite flat side. Early black type 3 injectors have Bosch numbers ending in 001, late yellow ones end in 007. I believe they can be interchanged, but I try to keep them all the same in one car. Aftermarket injectors are unmarked. It's quite possible that some aftermarket injectors are fine, and some may just be rebuilt Bosch injectors with new injection molded caps on them. I don't know, but I've had a few cars which never ran right in spite of everything I could do with them. They settled right down as soon as I put in the correct Bosch injectors. My '71 came with 3 Bosch injectors and one aftermarket. I spent 2 days trying to correct a running problem and, in desperation, finally replaced that one injector. It ran fine after that. I don't know if the problem was flow rate or the solenoid, but it was certainly something related to that injector. I haven't run into this enough times to be absolutely certain about it, but I now tend to be suspicious of non-Bosch injectors. -- Jim Adney jadney@vwtype3.org Madison, WI 53711-3054 USA ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ List info at http://www.vwtype3.org/list | mailto:gregm@vwtype3.org ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~