RE: 1987 260E

Made the mistake of pulling on the vacuum line that runs from the valve cover gasket breather hose to fuel pressure regulator, and inadvertently pulled the mushroom shaped rubber fitting out of the end of the fuel pressure regulator.

Secured a new rubber fitting, but am not able to force it into the very small hole in the fuel pressure regulator.

The fitting is just way too big for that little hole.

Obviously, since the FPR is big $$$, I don't want to replace it just because of the rubber fitting issue.

Any advice?