16v idle

My 16v idle is a little lumpy, timing and co have been set right but I want it better! Could the system pressure be out! Would it be worth getting the guage from sir crazyquiff?

Firstly, what form of idle control does your 16V have, because there's a couple of variations.

Sorry should have said! Its got the AAV from a mk1 gti!

I'd say lumpy idle is nothing to do with fuel system pressure. Its rarely system pressure which is out of spec. I'd be looking at things like injectors, condition of spark plugs, condition of other ignition system components in general.

New injectors, plugs, dizzy cap, rotor arm, leeds, coil, fuel filter! After fitting new injectors the co was miles out, different metering head was tried but was still miles out, then I found out how to adjust it! thought if the co was so far out the pressure my be out too!