Hi there, need some help....was trying to plumb a boost guage into the vacumn line from Combi Valve which connects under Inlet Manifold....but NO VACUMN!
Could someone please tell me if this line should have vacumn or boost under load as it seems to develop neither.
Could be reason I get the "infamous" rattle under cold start and when blipping throttle...goes away under boost.
Help would be much appreciated!