Heck yes!! This is one of the most little-known common problems in water
boxers. Fix those leaks, and your mileage will increase. Save a few bucks
to boot.

One way to check for leaks is pressurize the tailpipe with a vacuum
cleaner. Blow some smoke into the vacuum cleaner intake, and see where it
comes out.

Piece o' cake to find. An exhaust patch (metal piece with clamps) as a
good temporary fix.

Jon

> Hadn't thought of that -- I have some slight leakage at both sides of
> the manifold (the two-into-one cast iron piece).  Would leakage make the
> ECU run rich?  I think the exhaust smells a little rich.
>
> Allan
> --
> 1991 Vanagon GL
> --
>   Allan Streib
>   astreib@fastmail.fm
>