1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

Cylinder 6 misfire on a 1999 Chevy blazer

Discussion in 'Mechanic's Corner' started by tdunaenko, Jun 28, 2016.

  1. tdunaenko

    tdunaenko I'm NEW... What now?

    Posts:
    3
    Likes Received:
    0
    Joined:
    Jun 25, 2016
    I need help trying to figure out this problem. I still have a cylinder 6 misfire even though I have changed the distributor cap, sparkplugs, and wires and wiped the code and it came back. Here is a list of symptoms
    -hard to start
    -runs rough
    -heavy smell of gas by exhaust
    what could it be? injector? timing? injector spider? throttle positioning sensor? Fuel pressure regulator? Is there another way I can troubleshoot this. the vehicle has 188000
    km's on it
     
  2. OldCracker29

    OldCracker29 There's a world going on outside the world that I'

    Age:
    58
    Posts:
    69,216
    Likes Received:
    12
    Joined:
    May 26, 2009
    Location:
    NE Ohio
    Since you've already tuned it up, my guess would be dirty fuel injectors. :dunno: Try running a good fuel system cleaner through it.
    Oh...and :welcome: to the forum!
     
  3. Black02Silverado

    Black02Silverado Sponsor

    Posts:
    20,426
    Likes Received:
    0
    Joined:
    Jul 1, 2009
    Location:
    Half way between here and there.
    Can you give more info. Is this the 4.3 v6? Throttle body injection?
     
  4. dirtyoldman

    dirtyoldman I'm now on Medicare,officially old.

    Age:
    70
    Posts:
    17,847
    Likes Received:
    1
    Joined:
    May 21, 2009
    Location:
    Saugus,Ca.
    Injector spider & Fuel pressure regulator is my guess.Have you checked the fuel pressure?
     
  5. Black02Silverado

    Black02Silverado Sponsor

    Posts:
    20,426
    Likes Received:
    0
    Joined:
    Jul 1, 2009
    Location:
    Half way between here and there.
    Gary did a writeu-up on changing that spider.
     
  6. NMRam

    NMRam Still Here Because I'm Not There

    Posts:
    8,839
    Likes Received:
    0
    Joined:
    Sep 25, 2009
    Location:
    Ft Sumner, NM
    Did you inspect the distributor housing really well. I had one that acted similar years ago...it was always worse when it rained or there was moisture in the air...and it turned out that there was a hairline crack in the back of the distributor housing. I replaced that and it ran like a champ.
     
  7. Draenor

    Draenor KILL ALL HUMANS!!!!

    Posts:
    6,241
    Likes Received:
    0
    Joined:
    Jun 2, 2009
    Location:
    Now in Scott,LA
    Plug wire or plugs...double check that nothing is pinched and plugs gapped properly.
    Defective cap on distributor. I've had one one time be bad out the box. Also, make sure that cap got put on correctly, Ive forgot to get them screw down tight before.You could try swapping wires around to see if it follows the wire.

    Bad spider injector or FPR. Check static and running fuel pressure.

    Burnt exhaust valve or worn rings. Check compression.
     
  8. tdunaenko

    tdunaenko I'm NEW... What now?

    Posts:
    3
    Likes Received:
    0
    Joined:
    Jun 25, 2016
    Sorry for taking so long to reply, it is a 4.3 Vortec V6 I have inspected the distributer housing I have found no cracks. Everything about the distributor looks ok. What is the best injector cleaner out there? Also if I take the Plenum off I can use Make a Gasket? or I should buy the gasket.?
     
  9. Black02Silverado

    Black02Silverado Sponsor

    Posts:
    20,426
    Likes Received:
    0
    Joined:
    Jul 1, 2009
    Location:
    Half way between here and there.
    I would get a new gasket. That way you know it will be good going back on.

    As for injector cleaner. I would use AMSOIL's Perfromance Cleaner. If you PM me your address, I can get you a quote on what it will cost to have a bottle shipped to you. :)
     
  10. tdunaenko

    tdunaenko I'm NEW... What now?

    Posts:
    3
    Likes Received:
    0
    Joined:
    Jun 25, 2016
    Box 5047
    Bonnyville, Alberta
    T9N 2G3
    Canada.
     

Share This Page