Major stink of petrol for first 15 minutes or so of driving and greyish smoke from the exhaust whenever idling even when fully warm

 

Have changed the fuel lines so that's not the cause of the stink

 

Conzult shows a dead O2 sensor, but both are dead on my other Zed without the same symptoms

 

Any ideas most welcome

I think it may depend what voltage you're O2 sensors are dead at, they could be permenantly reading lean, so the ECU is chucking more fuel in.

Permanently stuck on 0.31 volt

Disconnect the O2 sensors and see what happens - although the O2s aren't used during warm up so its doubtfull to be those. Check the fuel rail temperature sensor connection. It is next to the injector connector for the middle cylinder on the left bank of the engine (smallish black square connector going onto a spade terminal).

 

Have you run the ecu diagnostics?

 

CheerZ,

 

Andy

Have run ECU diagnostics and only got ab error with the temperature sensor 30 starts ago. Have reset the errors plus the ECU.

 

Slightly concerned that there may still be an error with the temperature sensor since it never shows aboue 66 C even after a 30 mile drive