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-   -   need help with CIS (http://forums.pelicanparts.com/porsche-928-technical-forum/673151-need-help-cis.html)

AirtekHVAC 02-15-2013 09:40 AM

thanks Dennis, but I am not looking for me...for Jim Doerr, I think he wants to play with one....If I cant clean mine out, I will try to rework it meself...if that does not work, I'll take it to the rebuilder near me.

DPW928 02-17-2013 07:50 AM

Just a side note for anyone adjusting their control pressure (WUR) or system pressure (regulator on the distributor). After changing either pressure, the A/F mixture will need to be reset.

For rebuilding the FD, a PDF document can be downloaded from the following site. http://www.porsche928forums.com/download/manuals/CISRebuild.pdf .

AirtekHVAC 02-17-2013 07:56 AM

That's the one that makes it look easy....lol...is it a trick?

DPW928 02-17-2013 09:21 AM

No trick. If I can do it anyone can. Just take it slow, clean all surfaces, make sure the o rings are the correct size and recheck everything. The most common problem in DIY rebuilds comes from fuel leakage between the two halves since the 928 came with a steel gasket. Just make sure all the surfaces are flat and clean, then sparingly use a sealant if desired but make sure you don't block any of the small decoupler orifices.


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