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.

Noise from front, plus "clang" on shut down...

Discussion in '1982-Present GM Diesel' started by uglytruk, Apr 28, 2006.

  1. uglytruk

    uglytruk 1/2 ton status

    Joined:
    Oct 24, 2004
    Posts:
    1,329
    Likes Received:
    0
    Location:
    IN A JUNKYARD, UNDER A TRUCK*N E Rust Belt
    My 6.2 developed a noise when the engine stops turning. Sorta' a ka-ching, everybody notices it. Now I've noticed that my '87 Burb sounds a bit noisy in the timing chain(?) area. Hasn't gotten worse in 1000 miles. could anything be loose? I don't believe the motor has ever been touched, (1?)80k. Any thoughts? Sometime in my life I hope to be able to post an audio video link. I have a great clip.
    Anybody want to help me use a link/player??? :rolleyes:
     
  2. uglytruk

    uglytruk 1/2 ton status

    Joined:
    Oct 24, 2004
    Posts:
    1,329
    Likes Received:
    0
    Location:
    IN A JUNKYARD, UNDER A TRUCK*N E Rust Belt
    1st thing I checked. Rings like a bell. Double chcked bolts to crank as well. Stethescope says front noise. Waiting for geek/help to play video/audio...
     
  3. jarheadk5

    jarheadk5 1/2 ton status

    Joined:
    Mar 6, 2000
    Posts:
    4,389
    Likes Received:
    0
    Location:
    PA
    What about the harmonic balancer? How's it look?
     
  4. colbystephens

    colbystephens 1 ton status GMOTM Winner

    Joined:
    Feb 24, 2005
    Posts:
    10,924
    Likes Received:
    20
    Location:
    Oregon
    if you can email me the clip, i could probably host that video for you... colbys (at) pdx (dot) edu.
     
  5. uglytruk

    uglytruk 1/2 ton status

    Joined:
    Oct 24, 2004
    Posts:
    1,329
    Likes Received:
    0
    Location:
    IN A JUNKYARD, UNDER A TRUCK*N E Rust Belt
    That's the problemo... I worked 'till 9-10PM last few nights. We own apts and 6 move ins for the beginning of month. Lotsa' little things...

    I have a neighbor to help me, just no time...

    The videos are on my hard drive, I watched them using MSN Picture Wizard, but not sure how to do anything else with them. Not even how to put 'em on a CD.

    I'll PM you...
     
  6. uglytruk

    uglytruk 1/2 ton status

    Joined:
    Oct 24, 2004
    Posts:
    1,329
    Likes Received:
    0
    Location:
    IN A JUNKYARD, UNDER A TRUCK*N E Rust Belt
    Found The Problem...

    The crank has two "items" attached to it. The rubber insulated harmonic balancer and the belt (drive) pulley. Mine ('87) has a rubber (ring) insulated 2 piece assembly. There looks like a number of "fingers" to prevent the outer ring from spinning when and if the rubber fails. Mine did, and that's the noise.
    The fingers are rapping against each other. Hence the noise. Pix below... :rolleyes:

    6.2 crank.jpg

    6.2 crank..jpg

    21 McD # 7&9 030.jpg
     
  7. uglytruk

    uglytruk 1/2 ton status

    Joined:
    Oct 24, 2004
    Posts:
    1,329
    Likes Received:
    0
    Location:
    IN A JUNKYARD, UNDER A TRUCK*N E Rust Belt
    Changed pulley/balancer, still need a better one...

    Here's what my old one and the "better" replacement. Anyone have a newer one?

    6.2 Crank pulley-before-after 005.jpg

    6.2 Crank pulley-before-after 004.jpg

    6.2 Crank pulley-before-after 006.jpg
     
  8. colbystephens

    colbystephens 1 ton status GMOTM Winner

    Joined:
    Feb 24, 2005
    Posts:
    10,924
    Likes Received:
    20
    Location:
    Oregon
    that is a really wierd looking pulley. never seen one which looks like that on any of the 3 6.2L i've dealt with - not that i've dealt with a plethora of 6.2s,
     
  9. uglytruk

    uglytruk 1/2 ton status

    Joined:
    Oct 24, 2004
    Posts:
    1,329
    Likes Received:
    0
    Location:
    IN A JUNKYARD, UNDER A TRUCK*N E Rust Belt
    When u mentioned that 86 was "cut off" year, I was concerned that my 86 Banks would be the "normal" style. But it was the same, as in pix. But I need a better one. Hate to spend $135 at dealer, but I'm going to an alternative energy fair 125 miles away on Wednesday. Went to one to-day, but it ended sooner than ad in paper said. So 5 hours-200 miles of beautiful countryside, $35 fuel, and a PO'D wife. Oh well, I tried to make up by changing her alternator on her beutiful (300k) '91 Accord. So she gave me sh** for installing a (tested) used one. And hard to install. Can't win...
     

Share This Page