I have a 95 S10 with a 4.3 vortecand a cpi fuel injection. I've replaced everything but the fuel lines and It won't start. The pump only primes it to 22psi. Any help?

Asked by Jul 09, 2016 at 06:18 PM about the 1995 Chevrolet S-10 2 Dr LS Extended Cab SB

Question type: Maintenance & Repair

I can start the truck when I pour gas into it. But only for a second.  It with
crank fine but won't start.  It only gains to 22psi when I turn on the switch.  
  Every thing tells me it should be 52 psi to 60 psi.  
I can't get the fuel pump to activate with the test wire under the hold it's
been down a month and I've spent $500 on it already any help would be
appreciated.

1 Answer

17,675

You need at least 50 psi to fire the injectors. It's supposed to be between 55 and 65psi. Either your pump is weak, the regulator on the back of the injector spider is leaking/bad or the lines inside the plenum are bad. 22psi will not run the truck

Your Answer

Add photo

Related Questions

  • 97 S10 4x4 4.3 help 1 answer

    Ok, my buddy has a 1997 S10 4x4 4.3 and it stopped running about a month ago well he checked the fuel pump and it works good has good presuor, it's getting fuel to the throttle body and it makes a...

    1997 Chevrolet S-10 2 Dr LS 4WD Standard Cab Stepside SB

    -

    Maintenance & Repair

  • Fuel System Loses Pressure 21 answers

    I have a 2003 Chevy S-10 Pick Up with the 4 cylinder & auto trans. Whenever I start it I must "cycle" the key 2 or 3 times to prime the fuel system. If I don't it cranks a very long time before start...

    2003 Chevrolet S-10 2 Dr LS Standard Cab SB

    -

    Maintenance & Repair

  • 98 s10 with 4.3 vortec wont start 18 answers

    my factory fuel pump went out i put a after market inline pump on but it wont start

    1998 Chevrolet S-10 2 Dr LS Extended Cab SB

    -

    Maintenance & Repair

  • Spider won't spary 2 answers

    94 s10 4.3,replaced spider twice, new from az ,neither will spray fuel ,new fuel pump,,new ecm,,new ecm temp switch, has plenty fuel pressure, at a loss,help

    1994 Chevrolet S-10 2 Dr STD Standard Cab SB

    -

    Maintenance & Repair

  • 96 Chevy S10 Blazer with 4.3 L engine vortex will turn over but won't start. Why? 77 answers

    The RPM's fluttered and it died. The PCM code read that it was the crankshaft sensor. We have checked the following: coil - replaced fuses - good control module (ecm) - replaced plug wires - replaced...

    1996 Chevrolet Blazer 4 Door LS 4WD

    -

    Maintenance & Repair

Search Chevrolet S-10 Questions

Chevrolet S-10 Experts

#1 Andrew Olsen
Andrew Olsen
Reputation 2,240
#2 Trebor66
Trebor66
Reputation 950
#3 John Saffrahn
John Saffrahn
Reputation 940
View All

Related Models For Sale

Used Ford Ranger
179 Great Deals out of 6,264 listings starting at $1,300
Used GMC Sonoma
5 Great Deals out of 471 listings starting at $2,700
Used Toyota Tacoma
543 Great Deals out of 38,016 listings starting at $2,900
Used Ford F-150
2,460 Great Deals out of 210,791 listings starting at $895
Used Dodge Dakota
110 Great Deals out of 3,953 listings starting at $1,500
Used Chevrolet Blazer
3 Great Deals out of 1,128 listings starting at $1,995
Used GMC Sierra 1500
906 Great Deals out of 64,755 listings starting at $1,500
Used Dodge Ram 1500
440 Great Deals out of 11,516 listings starting at $700
Used Chevrolet C/K 1500
883 listings starting at $4,599
Used Chevrolet Camaro
144 Great Deals out of 35,537 listings starting at $1,995
Used Ford Mustang
314 Great Deals out of 45,659 listings starting at $2,000