StalkerGT

I'm running stock heads and cam, stock injectors, sn-95 maf. It's 38psi with the vacuum on. It's just weird because this is the first time it has ever done it. Never had a problem all summer. When the vacum is off it goes up to about 42. The pressure does go back up after I rev it up

projectresto83

sounds like it is working just fine....whats the timing at? what plugs? what do they look like? any codes? so stock MAF 94/95 sensor with that housing then?

StalkerGT

Timing is at 14 degrees..plugs looks good. It's a sn-95 maf and housing. It's just weird that this is the first time it has ever ran like this...never had any problems till I went to adjust the fuel pressure

projectresto83

Did you change the regulator and change it or has it ran with that regulator then you changed it and it runs like this?

projectresto83

change the filter.....

StalkerGT

No this regulator has been in since April and was brand new when I installed it...it only started doing this when I went to adjust the fuel pressure. The fuel filter was done in may when I put in a Walbro 255

mattdel

Def something weird with the regulator going on..

projectresto83

^^ thats what it sounds like...tweak the pressure back up and see what happens

StalkerGT

I put the pressure up to 50 with vacum on to see what would happen...when I reved it up the fuel pressure went up like it should have ... I turned it back down and back to the same problem. Fuel pressure went down went I hit the gas. Why won't the regulator let me put it any lower than 38 psi?

projectresto83

bc its a bad regulator from the sounds of it.....or your gauge is wrong?..