99 suburban runs but won't start

Asked by Mar 26, 2017 at 06:52 PM about the 1999 Chevrolet C/K 1500 LS Extended Cab RWD

Question type: Maintenance & Repair

I have a 99 suburban k1500 5.7 vortec. Its been
sitting for a couple years. Using ether, it starts and
runs. Drives pretty good, other than a little sputter
if you accelerate too fast. But no misfires or
anything.

But without ether, it wont start.. It just cranks and
cranks. Any ideas?

6 Answers

90,755

Check the fuel pressure, may have low fuel pressure. Check at the Schrader Valve, it should be 56 to 63 lbs.

What are the possibilities if its low? Fuel pump?

90,755

Real good. Hard starting when it gets under 55 lbs. no start when it gets to 50 and below. I bet it is right on the edge to be able to run but not start. Once you build up fuel pressure on the gauge, let it sit for 3 minutes with the key off. The fuel pressure should not drop more than 5 lbs. If it does, this is an indication of leaking spider injection assembly.

90,755

Oh yea, the fuel pump.

Decided to replace the fuel pressure regulator today to see if that changed anything. Put in the new regulator, closed everything up and now There's no pressure in the lines at all. Fuel pump still runs, but no pressure

90,755

Repairs to the spider assembly never last, always have problems down the road. It is always recommended to replace the assembly. But on yours, the assembly should have ben of the new upgraded one. Should just check the fuel pressure. It is easy to do. Just rent a fuel pressure gauge from an auto parts store, let them know what you are checking so get the right fitting.

Your Answer:

C/K 1500

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

CarGurus has 12 nationwide C/K 1500 listings and the tools to find you a great deal.

Postal Code:

Chevrolet C/K 1500 Experts

  • #1
    Andrew Olsen
    Reputation
    4,780
  • #2
    John Saffrahn
    Reputation
    2,810
  • #3
    Rowefast
    Reputation
    2,490
View All

Related Models For Sale

Used Chevrolet Silverado 1500
77 Great Deals out of 9,429 listings starting at $3,995
Used GMC Sierra 1500
60 Great Deals out of 8,831 listings starting at $4,499
Used Ford F-150
101 Great Deals out of 12,413 listings starting at $352
Used Dodge Ram 1500
15 Great Deals out of 513 listings starting at $2,600
Used Chevrolet Silverado 2500HD
17 Great Deals out of 1,342 listings starting at $6,995
Used Chevrolet Camaro
20 Great Deals out of 1,009 listings starting at $10,500
Used Chevrolet Tahoe
10 Great Deals out of 931 listings starting at $4,999
Used Toyota Tacoma
23 Great Deals out of 1,588 listings starting at $6,858
Used Chevrolet S-10
4 listings
Used Chevrolet Silverado 2500
3 listings starting at $6,495

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. Content will be removed if CarGurus becomes aware that it violates our policies.