The injection pump is completely electronically controlled. Well, except for the advance but anyway, vacuum should have nothing to do with fuel.

I agree on checking for bubbles forming in the fuel lines when hot. But it's a mystery how the brakes are effecting things.

__________________
-Evan


Benz Fleet:
1968 UNIMOG 404.114
1998 E300
2008 E63


Non-Benz Fleet:
1992 Aerostar
1993 MR2
2000 F250