01-25-2014, 11:07 AM
Join Date: Nov 2013
Total Cats: -154
Insight on fuel delivery, fuel pressure, and related
1994, Naturally aspirated, plan to keep it that way, for now its just a daily street car
rebuilt block, but has 2000 heads, intake manifold, injectors etc..
Megasquirt ecu, AEM wideband o2, AFR gauge already
Ive got wayy to low fuel pressure. like 18.9psi constantly, maybe it twitches up to 20psi sometimes...this reading is based off the digital gauge in my tuner studio. also the car has always had lean running related issues and a twitchy AFR reading, unsteady idle, random cutting out on the highway
Just ordered a new walbro190lph fuel pump kit, new fuel filter and an new adjustable fuel pressure regulator.
Im good for the install of the pump and filter, but having a hard time finding a solid write up on how to install the new regulator and adjusting it to proper pressure just for normal daily driving (naturally aspirated) use.
Any insight here?
What pressure, in psi should i be shooting for?
also any link to a good write up or install video of the regulator would be much apreciated