GM Truck Club
THE PREMIER CHEVY TRUCK & SUV FORUM
Founded in 2004 ~ We're the #1 Chevy Truck & SUV Forum.
Silverado & Sierra | Tahoe & Yukon | Suburban & Yukon XL | SUV & CROSSOVER
Page 1 of 2 12 LastLast
Results 1 to 10 of 13
  1. #1

    Default 1998 5.7 vortec no start..

    I'm having a problem with a 98 vortec 5.7...It will only start cold if starting fluid is shot in the throttle body area,,,once it is running it is ok..runs fine...if you shut it off and restart with in about 5 mins,,,it goes,wait longer,and it need to be primed again. the distibutor cap and wires are new,as is the fuel pump and filter,has over 60lbs at the injectors..also the entire injector spider has been replaced..I've read people having the same exact problem,but have seen no solutions...anyone help?

  2. #2
    Legend
    murdog94's Avatar
    Join Date
    Feb 2008
    Location
    Cloquet, Minnesota, United States
    Posts
    8,198
    Blog Entries
    12

    Default

    Do you have the same 60psi after the 5min plus of sitting?? only reason i ask is it sounds like the pressure is bleeding off somehow...
    Mike

    Currently

    1997 Chevy S-10 Blazer 4X4 with 330K miles and counting (Hunting rig).

    2009 Saturn Aura XE (wifes car)

    2011 F-150 Crew 4X4

    "Hold it to the floor till you see God.... Then Brake!!!!"

  3. #3

    Default

    Can I assume that the 60 psi fuel pressure you measured was at a time when it wouldn't start? Where it will start on starting fluid suggests that the problem is a fuel delivery problem.
    '98 K1500 Suburban LS 5.7 L 4L60E NV246 ARB
    '92 Ford Explorer XLT 4x4 4.0 L A4LD BW13-54 Trac-loc rear
    "My toys were the greasy cogs and springs and pistons that lay around all over the place, and these, I can promise you, were far more fun to play with than most of the plastic rubbish children are given nowadays." Danny in Roald Dahl's Danny The Champion of the World

  4. #4
    Master Mechanic bigdaddy77084's Avatar
    Join Date
    Jan 2010
    Location
    Houston, Texas, United States
    Posts
    649

    Default

    I had a 72 gmc that did the samething..always had a bottle of gas in the back. Put a new carb on it and it stopped..
    95 tahoe 2dr 4x4 200,000+ miles

  5. #5

    Default

    Quote Originally Posted by MrShorty View Post
    Can I assume that the 60 psi fuel pressure you measured was at a time when it wouldn't start? Where it will start on starting fluid suggests that the problem is a fuel delivery problem.

    yes..60 lbs when the key is turned to on...55 lbs when running...no ck eng light codes...runs ok after a shot of starting fluid,and will restart if started within 4 mins

  6. #6

    Default

    maybe an issue with the injectors opening. Are the spark plugs "wet" after trying to start?
    Last edited by MrShorty; 04-12-2010 at 09:41 PM.
    '98 K1500 Suburban LS 5.7 L 4L60E NV246 ARB
    '92 Ford Explorer XLT 4x4 4.0 L A4LD BW13-54 Trac-loc rear
    "My toys were the greasy cogs and springs and pistons that lay around all over the place, and these, I can promise you, were far more fun to play with than most of the plastic rubbish children are given nowadays." Danny in Roald Dahl's Danny The Champion of the World

  7. #7
    Jr. Mechanic
    Join Date
    Mar 2010
    Location
    Montana
    Posts
    134
    Blog Entries
    1

    Default

    what about a vac. leak ? My ok i hate to say it all but my honda did the same thing it turned out to be the t.b. was loose as soon as i fixed it it ran and started fine.

  8. #8
    Legend
    murdog94's Avatar
    Join Date
    Feb 2008
    Location
    Cloquet, Minnesota, United States
    Posts
    8,198
    Blog Entries
    12

    Default

    IS it using coolant at all???
    Mike

    Currently

    1997 Chevy S-10 Blazer 4X4 with 330K miles and counting (Hunting rig).

    2009 Saturn Aura XE (wifes car)

    2011 F-150 Crew 4X4

    "Hold it to the floor till you see God.... Then Brake!!!!"

  9. #9

    Default '00 5.7L Vortec cold start problem

    I have the same problem...and just joined as well, so I'll follow along. I just bought this truck a few weeks ago, and I knew it had this problem.

    '00 5.7L has a problem starting in the mornings or after it's been sitting for more than an hour or two. first turn it usually doesn't try to start, second turn and after it will try to start, sit and wait, a few more turns and it fires up without any problem. after that, no problems at all, first turn and she's running fine.

    hoping to get some good ideas following this thread....
    '00 Chevy C2500 5.7L 2WD LS Crew Cab w/Std Bed - 176K Miles
    Last year of the Classic/Old Body Style

  10. #10

    Default

    Quote Originally Posted by dlhendo View Post
    I have the same problem...and just joined as well, so I'll follow along. I just bought this truck a few weeks ago, and I knew it had this problem.

    '00 5.7L has a problem starting in the mornings or after it's been sitting for more than an hour or two. first turn it usually doesn't try to start, second turn and after it will try to start, sit and wait, a few more turns and it fires up without any problem. after that, no problems at all, first turn and she's running fine.

    hoping to get some good ideas following this thread....
    We finally solved the problem...seems the fuel pump we purchased wasn't up to the task,it would lose pressure after sitting 5 mins..here is what we did..we took apart the original pump module,and replaced the electric pump inside with another new pump,made for a 96 SS impala.. this was only 69 bucks,and not the 200 plus for the complete unit. Works fine now..

Page 1 of 2 12 LastLast

Similar Threads

  1. 1998 suburban vortec knocking/ tapping
    By chevysub in forum Chevy Suburban Forum (GMC Yukon XL)
    Replies: 3
    Last Post: 12-20-2009, 03:45 PM
  2. Aftermarket Remote Start with Factory Remote Start
    By Perpendicular in forum Audio, Video & Gadget Tech
    Replies: 12
    Last Post: 10-05-2009, 05:13 PM
  3. 1998 6.5 GMC C3500 HD Hot start problem
    By Lou19 in forum Member Introductions
    Replies: 6
    Last Post: 09-28-2009, 10:02 PM
  4. Car was hard to start then didn't start at all
    By bmxr123 in forum Chevy Silverado Forum (GMC Sierra)
    Replies: 1
    Last Post: 07-03-2009, 08:48 AM
  5. 1997 Silerado ....5.7 vortec . Wont start when cold
    By qpe05 in forum GM Powertrain
    Replies: 7
    Last Post: 09-05-2007, 03:22 PM

Tags for this Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •