This car is running very rich, too rich to put analyser on. It is slightly intermittent but will always run rough within 10 min.

No DTCs

Low vacuum reading

Items the garage has substituted/tried, CTS, Distributor, ECU tried in another car, EGR blocked off, PCV checked, V-Tech oil pressure switch and solenoid checked. Fuel pressure and flow to spec. Compressions hot and cold. O2 sensor removed to check for blocked cat.

Injection running at about 4ms.

The only thing I can see that makes no sense is the ignition timing at idle is at about 60 deg! I realize that the ECU controls the ign timing, is there any other external influences which would cause this over advanced timing? It may be obvious but after looking at this car for so long i have started to glaze over.

Any thought would be great.

Simon