Vacuum Leak

[George657]

Does outside temperature have an effect on vaccum?
I'm at college and its -2. My vaccum has now dropped to -14HG on idle.

 

[xDaNx]

What should a Cupra R vacuum value be at idle and max vacuum anyone know.

Mine sits at -20 on idle and see upto -23 when coasting in gear.

 

[George657]

Mine use to sit at -20. Got in the car this morning and it sits at -16. Took the car for a drive and it still boost's fine, hold 20PSI ect.
I cant hear any leaks, and iv looked around the engine bay for any loose connections or hoses.
Any help please?

 

[George657]

Anyone?

 

[George657]

Bump! Have done a PCV delete into a catch can. Still only getting -16hg on idle. Bill has advised me to try another gauge. Any other suggestions?

 

[cupraslayer]

Got to love problem solving on these engines!

 

[George657]

Bump, carried out a couple more tests.
It's deffinatly not the gauge.
I'm certain it's not a leak!
Could it be the map or the maf?
Holds -18/-15 on Vac.