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  • PubBurgers

    March 18, 2010 11:56 a.m. PubBurgers Dork

    My Volvo is a bit noisy and i was just wondering if there are any noises in there i should be worried about. I know the fan and accessory belts are loud but there's something else. I guess i fear rod knocking but have a very untrained ear so i figured i'd see what you guys think. I could very well be worried about nothing.

    video:

    http://s268.photobucket.com/albums/jj18/JDN169/?action=view&current=M2U00059.flv

    thanks!

    Jacques

  • BobOfTheFuture

    March 18, 2010 6:39 p.m. BobOfTheFuture Reader

    I hear valve clatter (sounds just like the "singer sewing machine" sound my MG makes), bearing/belt whine, fans, a/c compressor cycling...

    I don't know volvos, but to me it just sounds like the A/C compressor is a bit loud, and thats it.

    Edit- now that i think of it, the a/c comp on my olds sounds just like that...

  • Toyman01

    March 18, 2010 7:00 p.m. Toyman01 Dork

    I vote lifters tapping and a bad alternator bearing.

  • ansonivan

    March 18, 2010 7:07 p.m. ansonivan Reader

    Quick procedure for isolating a rod knock:

    • Pull the plug wires so that they're all just barely resting on the spark plugs
    • start the engine and lift each plug wire until its corresponding cylinder stops firing
    • when the knocking noise changes you've found the cylinder with the issue.
    • if the noise never changes it's probably not an issue with the rods/crank/pistons
  • dean1484

    March 18, 2010 7:44 p.m. dean1484 Dork

    Am I the only one that was thinking that there would be written descriptions of car noises and we had to try to name them?

 
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