Darn annoying. Switch the truck off, ( 1995 80 series) and 10 minutes later you've lost that 1st 'free' brake application with vacuum assist. When you're a manual and on a steep hill, its disconcerting to have to jam your foot so hard on the pedal the truck doesn't roll along while you shift to neutral and key it. Soon as it starts pedal sinks and all is well, got great brakes again. What's the most likely suspect causing a loss of vacuum after a few minutes of not running the engine and how would you check.
Pic of my trusty LN106 bush rig as the 80 is in semi-retirement so it last another 30 years. .
Cheers.
Pic of my trusty LN106 bush rig as the 80 is in semi-retirement so it last another 30 years. .
Cheers.