Re: TBI Fuel Pressure
Well i got my fuel pressure gauge installed saturday and figured out a couple things. First even cold the pressure was barely hitting 10psi while cranking and even less while crankin when warm. Once started it was onky holding 13psi on both tanks. When i bolcked the return hose pressure went to 17psi and while it stayed there i deemed weak pumps so i pulled left tank. Found out it was newer and of a much higher pressure and gph than i had remembered it being but still not as good as it could be though more than enough to support the engine. I got a new fuel filter just because it been a few years. Good thing. Turns out it was atleast 80% or more restricted and i believe may have been most of the root of my problem. Fuel pressure is now 15psi cold and warm running and 12-13 psi while cranking and thats just on the right tank and inly from changing the filter. Only had about 10,000 miles on it and i run premium so didnt think that would be as clogged as it was. Im gonna install much stronger pumps this week anyway just incase they are getting weak but im thinkin my problems are gone. It idled strong for almost 25mins after the filter change until i shut it off. No longer did it die or struggle to start. Im hopin its good again.
__________________
Thank a Veteran. They have sacrificed more than you will ever know!
2003 Chevy Z71 Tahoe 190,500 miles
2002 Chevy Silverado 1500 4x4 230,000 miles
1987 custom built Silverado 4x4 435,764 miles
1985 K5 Blazer 396 bb 4x4 project
1982 K5 Blazer Silverado 4x4 519,348 miles
|