Civic 97 - loud ticking sound

Discussion in 'Civic' started by Agent Smith, Jul 27, 2004.

  1. Agent Smith

    Agent Smith Guest

    Hi everyone,

    I started hearing a loud ticking sound when I first start my car, a
    '97 Civic with 68,000 miles. This sound appears after the engine idles
    for a few minutes. I can hear it more distinctly if I kneel and listen
    from below. After 10 minutes of driving the sound disappears, and the
    engine sounds just right when idling. I don't think this is "piston
    slap" because it's much louder. I also checked the oil which was fine.
    I also checked all other fluids and they were in norm.

    A few months ago I had the idler pulley replaced with a new one. My
    mechanic suggested I replace all three belts some time.

    Can this ticking be attributed to the timing belt alone? Is there a
    point in replacing all three? How much of an expense am I look at?

    Any advice is much appreciated.
    Agent Smith, Jul 27, 2004
  2. Agent Smith

    motsco_ _ Guest


    I'd try changing the oil to 5w-30 and see if there's any change. Did
    this appear after the last oil change? Have you ever had the valves
    adjusted, and is the noise half-speed of the engine noises?

    motsco_ _, Jul 28, 2004
  3. Agent Smith

    Agent Smith Guest

    Yes, this is way past the last oil change. Actually, it was 5w-30 they
    put in last time. I've never had the valves adjusted because the
    engine has been in great shape so far.

    This morning I listened carefully where this sound was coming from,
    and it was clearly from the pulleys (not sure which one). I always
    thought a worn-out belt produces a loud squealing sound (you hear it
    all the time because people don't bother replacing their belts).

    I'm not sure if the noise if half-speed of the engine noises, but it's
    roughly 2-3 loud knocks per second. The engine does tick quietly but
    my Honda mechanic said all Civic engines "tick" a little.

    Agent Smith, Jul 28, 2004
  4. Agent Smith

    E. Meyer Guest

    The ribbed belts that they use now make a rattling sound, very similar to a
    failing timing chain when they get hard and start cracking in the ribs. If
    your belts are still original, go ahead and change them, they're due anyway.
    If that doesn't eliminate the sound, then look for a failing pulley.
    E. Meyer, Jul 28, 2004
  5. Agent Smith

    motsco_ _ Guest


    I wonder if he didn't tighten the crankshaft pulley bolt properly ? It
    might 'flop about' until everything heated up, then the noise would
    stop. I'm not saying he should have used LockTite...that's verbotten.

    Why in the world was the pulley replaced the first time, and how bad was
    the original one messed up?

    motsco_ _, Jul 28, 2004
  6. Agent Smith

    Agent Smith Guest

    Well, the original one started leaking oil and being *really* noisy. A
    bad rain one night pretty much finished it. I saw it---it had traces
    of oil going from the bearing.
    Agent Smith, Jul 28, 2004
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