The injection system seems to be a bit of a mystery for many tii owners especially the Kugelfischer pump. If you want to educate yourself, the information is out there thanks to various discussion groups on the web and to people like Bob Murphy of the tii Register (which distributes information and long-out-of-print tii tuning manuals). You can learn to set-up, test, and tune your injection system with the help of these resources. But when it's time for a pump overhaul, this is a job best left to the experts of which there are precious few who can do this job properly.

Gus Pfister. >larger image

Doing research for my own rebuild, the name recommended most often by ace tii mechanics and Bimmer performance shops alike is Gus Pfister of Pacific Fuel Injection. Gus has 30 plus years of experience rebuilding Kugelfischers, and as an added bonus for tii-driving Bay Area 02ers, he's in our own back yard.

The fuel pump "waiting room." >larger image

I contacted Gus by phone to make an appointment to have my injection pump overhauled and a check-up of the injectors. He was kind enough to agree to let me bring a camera and tape recorder into his shop, to see both the inside and out of what he does. (Ive always wanted to take apart a Kugelfischer pump and see what makes it tick, but the rarity and cost of a spare makes this impractical!)

A few weeks after my phone conversation with Gus, I parked my '73 tii in the garage, pulled off the injection pump and injectors, and headed up to South City.

Parts is parts? Don't believe it. >larger image

Upon entering Pacific Fuel Injection I am immediately wowed by the number of injection pumps, all in various states of disassembly. Same goes for the stacks of sealed UPS boxes containing tired pumps from scores of BMW and Mercedes repair shops, all waiting patiently for their turn at some of Gus magic. There are flow benches and other impressive, yet alien-looking machines, rows of workbenches, tools and solvents and all these amazing parts bins-stacks of them all filled to the top with freshly plated parts freshly plated Kugelfischer parts!

Flow bench. >larger image

Gus, who was busy tuning on one of the flow benches is now aware of my presence, comes over to greet me and then were off for a tour of his shop. Like I said, this guy is busy (in fact it's Saturday and he's working) so we get down to business. Here is part of our conversation.

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