By the information in previous posts, I believe I may have a vacuum leak on my 300E 2.6.
Symptoms are slight surge on gentle acceleration and demist comes on during hard acceleration. Is this likely and is there a most common point where leaks occur?
Many thanks for advice that anyone can give.

__________________
Tony
76 W116 280SE
74 W107 450SLC
88 W124 300E
82 W123 280TE

On our '91 the rubber couplings and ports have hardened or cracked, and the plastic vacuum tubes have held up well. On on older vehicle, the tubes may fail as well. Even if you fix the problem circuit, you may have imminent failures elsewhere if you don't replace it all. Still, the worst deterioration will occur where there is the most heat, like at the EGR, or physical stress, such as connections from the engine to components mounted on the body.

Steve

__________________
'91 MB 190E 2.3
'08 RAV4 Ltd 3.5
'83 Lazy Daze m'home 5.7