Hey,


Just working at diagnosing my running rich codes and when I disconnected my brake servo line at the manifold the engine stalled. Is this normal? I thought that when you have a big vacuum leak such as a loose or disconnected line the engine rev's go up. Can someone confirm this on their truck?

 

That is a big vacuum line, just about all cars and trucks stall or come really close when you pull that off.

 

see above

 

Thanks for confirmation