Zetec On Jenvey's Running Lean

[flatout]

HI all

,

I have got my zetec running on jenvey throttle bodies & Emerald ECU

I have carried out various experiments to find the problem but have not wished to touch the mapping although I do have the software for examining the maps plus a real time display of what is happening . the map in there that i am using is the GBS power map that i had from leoni from emerald .

 

1 Have set TPS in ECU

2 Fuel pressure 3bar

3 GBS power map installed

4 Road test with Innovate Digital Air/Fuel Ratio Meter used getting reading of 49 AFR on tickover getting reading of 18.0 AFR on normal driving when engine loaded up to around 5000 rpm its droping of to 13-14 AFR

5 Have looked for leaks in the fuel line all ok

6 Fuel return from the regulator is free, and not blocked

 

 

Is this normal reading that i will get with the AFR meter with the zetec as to me it looks like its to lean .

 

Chris

[Grim]

a reading of 49:1 mixture is incredibly lean, i'd be surprised if it even ran. Could it be a measurement fault / air leak on the exhaust manifold / sensor?

[flatout]

Thanks Grim will look for air leak on the exhaust manifold over next few day's any other thoughts .

Edited February 19, 2012 by flatout