Hi Dennis,

    Its also been my experience that the Vanagon pumps don't put out enough
pressure. I think I have the answer as to why some folks are getting them to
work on CIS systems. In the multiport Vanagon format, the fuel pressure
regulator relieves the pressure quickly enough to keep the operating
pressure at or about 30 to 40 lb's of available pressure, which works well
with the electric injectors. But not enough to open the manual CIS's
injectors. So here are my thoughts on why it works somewhat. With the
mechanical control pressure regulator, and fuel distributor design, the low
pressure Vanagon pump is dead-heading so to speak, and builds up enough
pressure to open the CIS injectors.............. It is most likely very hard
on the pump, and should shorten its life greatly. I would spend the money
and get da right sh t! I meant I would not presume to out wit those dummies
at Bosch!
    I also agree on the use of an accumulator, and metal fuel lines,
pressure and relief.

Howard

> The Vanagon fuel pump is designed to run at less than 40 psi. CIS
> requires a pump that can deliver at 80 psi, has a check valve, and you
> will also need a fuel accumulator. You also need to replace the hoses
> with reinforced lines or steel tubes designed for that pressure.
>
> Dennis