Z3 Roadster Auto, Wplate - Engine Cutting Out

[albion]

Recently I have been suffering a spate where the engine keeps cutting out for no obvious reason. Its worse when I fill up with petrol but happens at other times. Am in the process of establishing if its contaminated petrol (have always used Shell Vpower) although are currently trying 95ron+ Millers petrol additive, but I think it might be something more sinister. There are no warning lights showing to indicate a problem. If it was injectors or fuel pump, would they show a warning light?

Anyone got any ideas?

[Steve]

Not sure if petrol pump would show a fault.. i could be wrong

[albion]

I have now tried adding Millers Eco Max petrol additive (double dose) which has worked wonders, running smooth, no cutting out - magic! Must have been caused through just running 95ron petrol (super-unleaded is as rare as hens teeth in rural scotland and when you can get it, its probably been lying in their tanks for weeks!)

[albion]

Discovered problem. Replaced Camshaft Position Sensors, Inlet & Exhaust - runs like a new car now