Fuel pressure

5

Asked by 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

43,695

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.

1 out of 1 people think this is helpful.

Your Answer

Add photo

Related Questions

  • fuel pump pressure 1 answer

    Fuel pump last pressure replace new fuel pump no pressure

    1997 Chevrolet Blazer 2 Door LS 4WD

    -

    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

  • service engine light is on with a code of po452 what does that mean 1 answer

    where is the fuel pressure sensor located

    Chevrolet Blazer

    -

    Maintenance & Repair

  • Why doe my 1995 chevy blazer fuel pressure regulator keep going bad? 22 answers

    I have replaced the regulator 3 times and also the fuel lines inside the manifold once. The pressure at the test port behind manifold is 50 lbs. The pressure at the filter is 63 lbs. with fuel line ...

    1995 Chevrolet Blazer 4 Door 4WD

    -

    Maintenance & Repair

  • fuel pump pressure ? 1 answer

    What is the fuel pressure on the Corsica V6 . At the pump and at the injectors

    1996 Chevrolet Corsica

    -

    Maintenance & Repair

Search Chevrolet Blazer Questions

UK Questions

Are you a UK consumer? CarGurus now has a discussion forum in the UK.

Chevrolet Blazer Experts

#1 Andrew Olsen
Andrew Olsen
Reputation 1,840
#2 yetilikesbeer
yetilikesbeer
Reputation 1,110
#3 Rowefast
Rowefast
Reputation 690
View All

Related Models For Sale

Used Chevrolet Tahoe
834 Great Deals out of 28,003 listings starting at $1,700
Used Chevrolet S-10
12 Great Deals out of 1,625 listings starting at $1,399
Used GMC Jimmy
287 listings starting at $2,800
Used Ford Bronco
181 listings
Used Ford Explorer
1,097 Great Deals out of 72,155 listings starting at $1,000
Used Chevrolet Camaro
417 Great Deals out of 40,746 listings starting at $3,500
Used Jeep Grand Cherokee
918 Great Deals out of 66,713 listings starting at $1,500
Used Ford F-150
3,112 Great Deals out of 209,132 listings starting at $1,200
Used Jeep Cherokee
319 Great Deals out of 54,421 listings starting at $2,495
Used Chevrolet Suburban
559 Great Deals out of 19,205 listings starting at $1,964
Used Chevrolet C/K 1500
1,061 listings starting at $1,250
Used Chevrolet Impala
919 Great Deals out of 35,385 listings starting at $1,700

Used Cars For Sale

2001 Chevrolet Blazer For Sale
179 listings starting at $2,900