vaccume hose
 

hello
i have a 92 190e 2.6 i need to know where the vaccume hose
for the fuel pressure regulator goes to.? i though it goes to constant vaccume.?others say it goes to the hose that comes from the valve cover to the aircleaner housing lid.?
thanks jose

The fuel pressure reg on MBs is NOT hooked to vacuum (as other cars are). It is just a vent and it is attached to the hose going to the airfilter so that it only gets clean air, instead of pulling in moisture etc.

vaccume hoses
 

thanks that helps alot
here is another question
which solenoid. does the vaccume hose coming from the egr valve. goes too. one goes to the airpump the other egr but which solenoid goes to what the way it is now.in park when i rev the motor the egr open up isn't it suppose to only open under load=
while driving.?

EGR works off idle. Its possible that it will open without driving. The more important consideration from the point of view of your question is that one solenoid is off on a warm car and the other isn't. The EGR solenoid is the one that is working. The secondary air solenoid closes at some warm-up temp and is closed when warm.