i have an 1985 gsl-se all solenoids in tact and rack in working order. air pump removed, split ait solenoid valve on side of motor removed. 6 ports non operational due to back pressure tube not hooked up. now the issue seems to be when the throttle is off of the trottle position sensor. IT HESITATES AND BOGS DOWN!!! only when at operation tempatures.

now thing i have done and checked. all ignitions components operational and working. it is not a spark issue!!! new plugs NGK, new cap rotor and wires. Tested both coils and ignitors!!! working fine. also verified visually on strut tower with leading plugs. motor still ran with only trailing and did not get worse. i have not checked the fuel pressure and the injectors are cleaned and tested. 680cc!!!

is the fuel pump where i want to start, or the fuel rail pulsation damper and fuel pressure regualtor. i have verified TPS is set with light method. AFM works, and i have tried swapping another one.

any suggestions other then search will help. i have tried searching for days!!! new fuel tank as well with pickup screen cleaned.

please help!!!

thanks
marshall