Re: 427/425 Engine Problem
Rich - if I remember correctly, the power valve supplies additional fuel at low vacuum. It he is still using ported vacuum, it is going to be very low so the power valve will supply enough fuel to keep it running ok. When the car warms up and he has the engine running at a higher rpm, the PV will not supply the extra fuel and maybe starve the engine. Could be that he has had the wrong PV both times or the engine is not producing sufficient vacuum.
Rich - if I remember correctly, the power valve supplies additional fuel at low vacuum. It he is still using ported vacuum, it is going to be very low so the power valve will supply enough fuel to keep it running ok. When the car warms up and he has the engine running at a higher rpm, the PV will not supply the extra fuel and maybe starve the engine. Could be that he has had the wrong PV both times or the engine is not producing sufficient vacuum.
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