Actually, the CIS is not that complicated and for the most part, it is extremely reliable. I think you can get the CIS fuel pressure tester fairly cheap....J.C. Whitney of all places. Other guys have used the tester and have gotten good results. It has two pressure gauges and the necessary hoses and fittings to hookup to various test points in the system.
Go to this web site and download the free copy of the Bosch K-Jetronic Tech Guide. Has something useful information in there to get you started.
http://www.phat-gti.com/downloads/boschtech-12d.pdf
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Dave
'85 930 Factory Special Wishes Flachbau
Werk I Zuffenhausen 3.3l/330BHP Engine with Sonderwunsch Cams, FabSpeed Headers, Kokeln IC, Twin Plugged Electromotive Crankfire, Tial Wastegate(0.8 Bar), K27 Hybrid Turbo, Ruf Twin-tip Muffler, Fikse FM-5's 8&10x17, 8:41 R&P
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