Looking for help.


1986 22re under 10k on new motor. Signs and symptoms- runs fabulous at idle and at low rpm/throttle, as soon as you give it more than half throttle or at higher speeds/rpm's it boggs down and loses power. I have replaced the fuel pump and filter along with cleaning out fuel lines. no change so I tested the fuel pressure and it registered at 38psi at an idle but dropped to 15psi upon acceleration, so I replaced the pressure regulator, Still no change. checked the timing, replaced plugs and wires recalibrated the MAF and checked for vacuum leaks. Nothing has fixed the problem, any suggestions?