TVR Chimaera over fuelling issues - Help needed!

[Coxy914]

Right, I have a problem with severe over fuelling on my Chimaera
So far, we have replaced plugs, leads, rotor arm, vacuum advance unit repaired (vac pipe air leak) oil and filter changed new engine management coolant temp sensor redex in fuel.
It is showing Massive hydrocarbon and co readings. CO IS 5 at idle 1300 hcs + at 3500 rpm.
Has anyone else had similar problems or have an idea where we need to look next?
air flow sensor or lambdas or faulty injector maybe???

any help would be appreciated!

[Coxy914]

I've ordered an AFM which should be here tomorrow and fingers crossed, this cure the problem!