[T3] Injector fuel hose connectors

[jadney at vwtype3.org]

> I have nothing but the geared clamps, but I don't over tighten them so
> they
> work fine...BUT.
> I re-hosed the car in 09 when I restored it and one of the hoses where it
> entered the pan started to leak, and I got thinking, ANY of the clamps you
> tighten wont adapt to a hose that squished out with time, and that hose
> will
> loosen, but the spring clamps will keep constant pressure on the
> connection
> and adapt for a hose that shrinks or squishes out with time.

That particular connection has no barb; it's just a smooth tube. So
sealing there is a bit more difficult. I've never had trouble there, but
maybe I tightened mine there a bit more than you did.

For places where you don't mind a more permanent style clamp, I like the
OE style pinch clamps with 1 or 2 "tension loops" that would help with the
problem you're describing. Otherwise, we're depending on the resilience of
the outer jacket and inner tube to maintain the sealing pressure.

My feeling is that the major drawback of the worm gear clamps is that they
don't form a smooth circle: The region around the "buckle" can give uneven
pressure.