i have a 1989 gta 350TPI it started running bad so i checked the fuel presure and it was 62 lbs way to high so i changed the regulator it was a bbk adjustable that did not work so i ordered a universal aeromotiv regulator hooked it p front whare the rubber lines are and it still reads 62 lbs itstill will not adjust up or down i dont know what to do please help what should i do next? o and the fuel pump is a TPIS 400hp pump it has been in the car for a year or so.

 

Will it not release pressure at all? Have you checked the fuel filter? Are all of th injectors firing? Try an Ohm test.

 

i called TPIS today and they told me to change the metering block under the afpr that i is probablysticking i never thought of that i tought that the regulator was the diaphram and the bbk housing but he said that the regulator is in the metering block so im going to return the aeromotive afpr and get a reglator from GM.

 

if it was the filter it would not get enough presure not to much.i did not check the injectors though how do i do that? just in case this metering block doest fix it.

 

Also make sure your return line from the fuel rail to the tank is not restricted

 

how and why would that happen all of a sudden? and how do i check that? also do you know if thats true about the bottom square base that holds the regulator he ses that it is the regulator and it has a valve in the base is this true? he also ses that gm sells the whole bottom base and regulator together he ses you cant get them seperate if this is true then why does jegs and summit all sell these so called regulators with just the diaphram,spring and housing?