Dismiss Notice

Welcome To CK5!

Registering is free and easy! Hope to see you on the forums soon.

Score a FREE t-shirt and membership sticker when you sign up for a Premium Membership and choose the recurring plan.

Ticking like a Timex

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by dcryer, Jan 27, 2003.

  1. dcryer

    dcryer Newbie

    Joined:
    Sep 3, 2002
    Posts:
    2
    Likes Received:
    0
    Location:
    California
    I have a 84 K-5 5.7L. The problem I am having is when I start the truck up in the morning, it sounds and runs fine (when its cold) but when it warms up I get a ticking noise. It only happens when there is a load on the motor, not when its idleing. I was hoping its an exhaust leak...hopely its nothing serious. Can anyone give me a little insite as to what it might be? Thanks
     
  2. Tice

    Tice Registered Member

    Joined:
    Aug 24, 2002
    Posts:
    36
    Likes Received:
    0
    Location:
    southeastern arizona
    sounds like an exhaust leak. it may also be your rocker arms tapping but i think it would do it all the time if it was rockers. Tice /forums/images/graemlins/k5.gif
     
  3. big pappa b

    big pappa b 3/4 ton status

    Joined:
    Jan 3, 2003
    Posts:
    6,328
    Likes Received:
    0
    Location:
    Falcon, Colorado
    Same as above..also, do you have headers? sometimes they can make a ticking noise that sounds like it could be something else
     
  4. mudhog

    mudhog THEGAME Staff Member Super Moderator

    Joined:
    Nov 6, 2000
    Posts:
    17,899
    Likes Received:
    2
    Location:
    portland oregon
    sounds like exhaust to me does it change with the rpm?
     
  5. dcryer

    dcryer Newbie

    Joined:
    Sep 3, 2002
    Posts:
    2
    Likes Received:
    0
    Location:
    California
    I have stock headers. The sounds gets worse with increased acceleration, but when I ease off the gas it kinda goes away. Like I stated before, you don't hear the noise at idle only when I put a load on the engine. Thank for reinforcing my first thought, because I thought it might be an exhaust leak. I will work on it this weekend.
    "Happy Wheeling All" /forums/images/graemlins/thumb.gif
     
  6. milspecjimmy

    milspecjimmy 1/2 ton status

    Joined:
    Aug 28, 2002
    Posts:
    901
    Likes Received:
    0
    Location:
    raymond, maine
    start it up some cold azz nite, like cold enough to see exhaust steam, then look under the hood and under the rig for any steam comming out where it isnt supposed to with a flash light.
     
  7. ZonkRat

    ZonkRat 1/2 ton status

    Joined:
    Jan 16, 2003
    Posts:
    1,003
    Likes Received:
    0
    Location:
    Lawrence County Tennessee
    Just start it in the dark.If the leak is big enough to hear inside truck you should be able to see it.Run RPMs up bout 2500 or so and let off quickly.Should see light flash at leak. /forums/images/graemlins/crazy.gif /forums/images/graemlins/truck.gifer /forums/images/graemlins/thumb.gif
     
  8. milspecjimmy

    milspecjimmy 1/2 ton status

    Joined:
    Aug 28, 2002
    Posts:
    901
    Likes Received:
    0
    Location:
    raymond, maine
    the clicking doesnt mean its a back fire, just means that it is leaking before the muffler, good idea though. also look at all the joints and look for ant soot. mine did this and it turned out to be a broken manifold, but the crack was behind the stupid heat sheild
     

Share This Page