I have a 4.3 vortec '98, I change the fuel pump,the spider injection and was working fine, parked the truck for 10 days and won't start,fuel pump doesn't have any pressure,and it's new?Some help pls

Asked by Nov 26, 2015 at 10:29 AM about the 1998 Chevrolet C/K 1500

Question type: Maintenance & Repair

4 Answers

160

first of all make sure your 20 amp fuse is good if it is go down to the pump itself and disconnect the fuel pump four way connector with a test light go between the grey wire and the thicker black (this is your fuel pump power and ground) with a test light that has a bulb not an l.e.d. turn the key on it should light for two seconds then go out and then light again once you start cranking the motor if it does light you got a bad pump or the wire in the unit is bad if it doesn't light try it again from the frame to the grey wire (power) if it lights now you have a bad ground if it doesn't you have no power going to the pump, swap the relay with a known good one if still no power, a professional is required

1 of 1 people found this helpful.
64,385

Agree,

Ok when I turn that ignition on I hear the fuel pump working,but doesn't sent any fuel to that spider fuel injectors

160

You need to put a fuel pressure gauge on the shredder valve with the pump running engine off you should get 63 psi and after the pump shuts off it should hold if the pump is running and you have no pressure the plastic line connecting the pump to the pump housing either ruptured or came off

Your Answer

Add photo

Related Questions

C/K 1500

Looking for a Used C/K 1500 in your area?

CarGurus has 896 nationwide C/K 1500 listings starting at $2,500.

ZIP:

Search Chevrolet C/K 1500 Questions

Chevrolet C/K 1500 Experts

#1 Andrew Olsen
Andrew Olsen
Reputation 3,330
#2 John Saffrahn
John Saffrahn
Reputation 2,500
#3 Rowefast
Rowefast
Reputation 2,050
View All

Related Models For Sale

Used Chevrolet Silverado 1500
1,685 Great Deals out of 174,972 listings starting at $1,250
Used GMC Sierra 1500
809 Great Deals out of 67,884 listings starting at $2,484
Used Ford F-150
2,174 Great Deals out of 206,277 listings starting at $1,499
Used Chevrolet C/K 2500
214 listings starting at $2,250
Used Dodge Ram 1500
463 Great Deals out of 11,092 listings starting at $700
Used Chevrolet Tahoe
562 Great Deals out of 28,965 listings starting at $1,699
Used Chevrolet C/K 3500
228 listings starting at $4,995
Used Chevrolet Camaro
219 Great Deals out of 30,798 listings starting at $1,217
Used Toyota Tacoma
523 Great Deals out of 40,493 listings starting at $2,495
Used Chevrolet S-10
11 Great Deals out of 1,349 listings starting at $1,395

Used Cars For Sale

1998 Chevrolet C/K 1500 For Sale
174 listings starting at $2,500
1997 Chevrolet C/K 1500 For Sale
143 listings starting at $3,895
1995 Chevrolet C/K 1500 For Sale
105 listings starting at $2,500

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.