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pdx930 pdx930 is offline
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Join Date: Sep 2009
Location: Hillsboro, OR
Posts: 56
As stated previously, the lambda fuel head expects the frequency valve circuit to be present and operatign at 50% duty cycle to bleed off pressure in the lower chambers and allow more fuel to pass to the injectors. Your symptoms and images seem consistent with that control circuit having simply been plugged without the required adjustment to the springs in the upper chambers. This should result in proportional lack of fuel exactly as you are seeing in your graphs.

The next step seems to be swapping out the fuel head with a non-lambda unit, installing the lambda circuitry and valve (yuck!), or getting your fuel head recalibrated so that it will work with the frequency valve removed.
Old 06-28-2010, 02:01 PM
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