I have a 1998 chevrolet K1500 5.7 L vortec mpi reg cab 4wd 120,000 miles.

Asked by Jun 30, 2015 at 12:29 AM about the 1998 Chevrolet C/K 1500 Silverado RWD

Question type: Maintenance & Repair

I have 60 fuel pressure with key on and 50 fuel pressure when truck is running at the
port at the top of motor behind the spider injection. I get 1 pint of fuel in 7 seconds
using stop watch on my smart phone. I was able to drive my truck around my lot up
and down hills and back up into my garage while someone sat under the hood spraying
starting fluid into throttle body. I put 3 different 1/2 bottles fuel injection cleaner into a
little more than 1/4 of  a tank of gas. I sprayed crc, gumout,and valvoline throttle body
cleaner into the throttle body. the truck will start once in a while on its own now, but
only runs 4 a few seconds. most of the time it cranks strong, starts, and stalls
immediately. can someone tell me how to diagnose the problem or tell me how to fix
it?

3 Answers

21,845

what makes the injectors pulse? thats the key as you proved this with your tests belive it or not! with study you may find a crank or cam sensor is the problem , my first would be a crank sensor guess.

Could b u need pull motor replace rings dbl check pressure on fuel pump. Injector cleaner won't do it. Spider may b bad.

If spider no good it will fry the rings. Check 02 sensors also

Your Answer

C/K 1500

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

CarGurus has 821 nationwide C/K 1500 listings starting at $2,436.

ZIP:

Chevrolet C/K 1500 Experts

  • #1
    Andrew Olsen
    Reputation
    3,840
  • #2
    John Saffrahn
    Reputation
    2,650
  • #3
    Rowefast
    Reputation
    2,210
View All

Related Models For Sale

Used Chevrolet Silverado 1500
2,715 Great Deals out of 175,181 listings starting at $955
Used GMC Sierra 1500
1,180 Great Deals out of 64,912 listings starting at $999
Used Ford F-150
3,264 Great Deals out of 223,479 listings starting at $1,200
Used Chevrolet C/K 2500
209 listings starting at $2,995
Used Dodge Ram 1500
410 Great Deals out of 11,150 listings starting at $1,495
Used Chevrolet Tahoe
827 Great Deals out of 42,174 listings starting at $1,987
Used Chevrolet Camaro
456 Great Deals out of 31,824 listings starting at $1,450
Used Chevrolet C/K 3500
216 listings starting at $3,199
Used Chevrolet S-10
13 Great Deals out of 1,205 listings starting at $1,600
Used Toyota Tacoma
713 Great Deals out of 45,875 listings starting at $2,500
Used Chevrolet Silverado 2500
10 Great Deals out of 232 listings starting at $3,995

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.