Join Date: Jul 2011
Location: Cologne, Germany
This is the thread where it ended up being the fuel regulator.
easy enough to check....pull off vacuum hose from plenum and suck through it, if you can suck through it (or there is petrol in the hose) the diaphragm is split...make sure though, the hose itself is not split.
you could also clamp off the fuel return hose from bottom of FPR, see if your idle improves
Dom - Alfa Spider 1990 S4 - formerly: Alfa 101 Sprint, 2600 Sprint, Montreal - family classics: Jensen Interceptor II, '58 Hooper RR Silver Cloud I, Shadow II, '60 Corvette.