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- Xref: sparky rec.autos.tech:10326 rec.autos.vw:4409
- Path: sparky!uunet!elroy.jpl.nasa.gov!ames!titan.ksc.nasa.gov!myjak
- From: myjak@titan.ksc.nasa.gov (Michael D. Myjak)
- Newsgroups: rec.autos.tech,rec.autos.vw
- Subject: Re: Cleaning injectors
- Message-ID: <1992Jul29.090953.3035@titan.ksc.nasa.gov>
- Date: 29 Jul 92 09:09:53 EST
- References: <hcnmj3g@dixie.com> <1992Jul29.101203.21102@mr.med.ge.com>
- Organization: NASA, Kennedy Space Center
- Lines: 26
-
- >
- > I believe the '79 VW would have used Bosch's CIS injection system, with the
- > metering being controlled mechanically by a deflected plate in the
- > airsteam. If this is the case, cleaning would involve forcing the solvent
- > through the injectors at pressure, and little more.
-
- yes, for CIS systems this is indeed true. It takes about 30-35psi to
- force feed these injectors.
-
- > One thing to
- > pay special attention to is the spray pattern. If it's clean and the
- > pattern is still crappy, E-mail me & I can send you some injectors.
-
- If I remember correctly, these injectors have a mechanical
- aspirator... its kind of like a 3-tooth pinion gear in a 4-tooth slot.
- Input gasoline pressure forces the pinion to spin which in turn forces
- the spray in to a conical shape. If the teeth are worn, or gunked up,
- or both, the mal-formed spray pattern is indeed the indicator.
-
- - Michael D. Myjak
- Senior Technical Specialist, Systems Analyst
- McDonnell Douglas Space Systems Company - KSC
- MYJAK@TITAN.KSC.NASA.GOV
-
- Fea'ture N. Distinction; Characteristic; Perculiarity (!)
- A bug with documentation.
-