Help me AEU86, you're my only hope

[jondee86]

Hey no problem bro We all have different ways of diagnosing and trouble
shooting. Totta and I may not always agree but in the end you get more
information and more possibilities to explore.

This thing you have been doing with the crankcase breather is interesting
too. By pinching the breather you are letting blowby pressure build up inside
the engine. Blowby contains unburned hydrocarbons amongst other things,
and when you release the pressure there will be a rush of "enriched" gas into
the intake manifold which then enters the combustion chambers. It appears
that this creates a rich mixture for a few seconds and this is seen by your
sensor.

This in turn suggests another experiment that you could try. Get 12V from
the battery positive and use it to energise the cold start injector while the
engine is idling. If that does not send your mixture rich, then nothing will

Cheers... jondee86