The Servo was rebuilt with the engine, it was removed and sent back to precision reinstalled same issue
Precision then built a new one and we swapped and same issue. Confident it is NOT the Servo.
checked fuel pressure with a handheld after electric and b4 engine after engine b4 Servo after Servo b4 spider and out of spider ALL GOOD with engine running and with different mixture settings and mags switched this is all done with air filter removed
they checked for intake leaks. Checked upper deck all the way to the sleeves on the injectors, matter of fact we removed the upper from the injectors which at idle at sea level really do nothing.
is there an airline on that engine that if it was placed backwards upon installation i.e. line that is SUCKING is placed in spot where it should be blowing on the Servo or mags or manifold that could cause this.