Fuel pressure
Asked by Pete1973 Feb 04, 2016 at 06:12 PM about the 1997 Chevrolet Blazer 2 Door 4WD
Question type: Maintenance & Repair
I have a 97"Chevy blazer 4.3 that the pressure is
not at the 50psi it's holding at 40psi & won't start
up. I just replace the fuel pump & fuel regulator &
cap & rotor & now the fuel filter too . Need help.
1 Answer
Rowefast answered about a year ago
The fuel pressure needs to be between 56 to 63 lbs. A dead head pressure is even higher. (just checking the fuel pump). The 4.3L is notorious for the injectors, spider lines, and the fuel regulator leaking. You do a fuel bleed down test, build up the pressure by cycling the key to build up pressure, with the key off watch the gauge and pressure should not drop more that 5 lbs in 3 minutes. If so the injectors, spider lines , and regulator need to be replaced as a unit in order to have long lasting results.
Your Answer
Related Questions
-
Fuel pressure 1 answer
I have a 97"Chevy blazer 4.3 that the pressure is not at the 50psi it's holding at 40psi & won't start up. I just replace the fuel pump & fuel regulator & cap & rotor & now the fuel filter too . Ne...
1997 Chevrolet Blazer 2 Door 4WD
-
Maintenance & Repair
-
Fuel pressure regulator 1 answer
Multiple misfires and fuel pressure regulator was codes. I changed fuel pressure regulator and it still will not run
1995 Chevrolet Blazer 4 Door 4WD
-
Maintenance & Repair
-
fuel pump pressure 1 answer
Fuel pump last pressure replace new fuel pump no pressure
1997 Chevrolet Blazer 2 Door LS 4WD
-
Maintenance & Repair
-
Fuel pressure regulator 1 answer
Can anyone tell me where and how to replace a fuel pressure regulator in my 98 Chevy Blazer??
1998 Chevrolet Blazer
-
Maintenance & Repair
-
what would cause no fuel pressure 2 answers
I was having problem starting, changed fuel regulator. No pressure. Then fuel pump and filter. Still no fuel pressure (0 psi) I can hear the relay click and pump going.
2001 Chevrolet Blazer 4 Door LT 4WD
-
Maintenance & Repair
Shortcuts
Search Chevrolet Blazer Questions
Chevrolet Blazer Experts
-
#1Andrew OlsenReputation2,040
-
#2yetilikesbeerReputation1,390
-
#3RowefastReputation1,060
Related Models For Sale
Used Cars For Sale
Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.