Quote:
Originally Posted by grigorean
Seeing the condition of spark plug, I can say that the mixture is rich, and that is also a thing that push me to idea of air leak, because i need to run enough rich that engine will not stop when warm...the sensor plate is not deflecting so much...the gap that is created when is sucked down is some about 1-1,5 mm maximum.Fuel strainer is ok.Fuel tank was empty and cleaned, fuel in the tank is new, and when I was checking the fuel flow to fuel distributor I have seen that fuel is perfect clean, and fuel flow is exactly as specified in WIS, about 1 litre in 40 seconds.
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When the engine is warm, have you checked the mixture control duty cycle at the diagnostic connector? Pins 3 (ECU) & 2 (ground). When the duty cycle is correct, it will oscillate centered on 50% (45 deg if using a dwell meter).
What spark plugs are installed?