Quote:
Originally Posted by Speedy Squirrel
The zinc plated vacuum limiter is supposed to eliminate the popping. Is the vacuum control line connected correctly? If it is original, the diaphragm has likely degraded and made it non-functional. It is testable with a little effort. The other possibility is that it is just too rich under load to compensate as adjusted.
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The vacuum line is teed off the same line as by distributor and bov taken from the tap below the butterfly on the throttle body. i did test the the diaphragm with a hand pump seamed good opened and closed and held pressure . The large hose if i remember correctly is connected to the back side of the Ic and the smaller hose is connected to the large tee that feeds the wastegate taken directly off the intake manifold.