Uh Oh! Ticking time bomb? Or something less drastic?
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Thread: Uh Oh! Ticking time bomb? Or something less drastic?

  1. #1
    Member Soulprogression108's Avatar
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    Uh Oh! Ticking time bomb? Or something less drastic?

    Ok so the little bike that could has had a little tick tock for a couple months. It started about three ago but has sat for last two while out of town.

    Starts out quiet and smooth but after half an hour or so ride it starts ticking away. It sounds like it’s in the engine. Happens at idle and gets faster as you speed up.

    Here’s a video. After a long ride it sounds pretty bad.

    It hasn’t lost any power and is otherwise running great. The oil looked great after a change. Also I checked the valves and they were in spec.

    My thoughts are maybe a ring is breaking down or the rocker arm is bent?

    Can anyone help diagnose. I hope it’s minor really can’t afford anything serious.

    https://youtu.be/TQ6RQb3WJa0

    Mahalos guys
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  2. #2
    Super Moderator Purple's Avatar
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    Sounds like exhaust gas escaping ......
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    (Warning - Forum may contain nuts) ...... Hidden Content

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  3. #3
    Senior Member GaryL's Avatar
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    Sounds like the valves need adjusting which should NOT be done on a warm or hot engine.

    GaryL
    Last edited by GaryL; 05-23-2019 at 07:49 AM.
    Be Decisive! Right or Wrong just make a decision. ​ The road of life is paved with flat squirrels that couldn't make a decision.

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  5. #4
    Ken
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    Senior Member Ken's Avatar
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    There are posts about the valve adjusting screws getting worn which leaves an excessive gap which causes the bike to click. When you measure the gap with a feeler gauge it can read ok because it measures across the whole surface of the valve adjusting screw and not the actual contact point. I suspect that is my clicking. I have the parts but haven't changed them yet.

  6. #5
    Senior Member admiral's Avatar
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    Quote Originally Posted by GaryL View Post
    Sounds like the valves need adjusting which should be done on a warm or hot engine.

    GaryL

    Maybe you meant "should not" be done on a warm or hot engine perhaps.

    Hidden Content A ride in the woods helps me relax and release tension. The fact I'm dragging a body should be entirely irrelevant?

  7. #6
    Senior Member stagewex's Avatar
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    Really doesn't sound that bad. I agree with the valve adjustment which you should check from time-to-time anyway.
    And the exhaust gasket could be loose or deteriorating too just from age and heat. Check to see if the bolts can use a slight tightening but be very careful. Those things have a tendency to snap-off and bring you bigger issues than a simple ticking sound.
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  8. #7
    Senior Member GaryL's Avatar
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    Quote Originally Posted by admiral View Post
    Maybe you meant "should not" be done on a warm or hot engine perhaps.

    Thanks Admiral. Thought I said NOT in caps but must have held the CTRL key instead. I edited it.

    GaryL
    admiral, Darth and jtomelliott49 like this.
    Be Decisive! Right or Wrong just make a decision. ​ The road of life is paved with flat squirrels that couldn't make a decision.

    Since light travels faster than sound, some people appear bright until you hear them speak.
    If I agreed with you, we'd both be wrong.

    1987 Yamaha BW350 Big Wheel
    2017 Snowdog Track sled tow motor for ice fishing
    Kubota BX2370 Subcompact tractor with snow blower
    Wilderness System Ride 115 fishing Kayaks

  9. #8
    Senior Member admiral's Avatar
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    Quote Originally Posted by GaryL View Post
    Thanks Admiral. Thought I said NOT in caps but must have held the CTRL key instead. I edited it.

    GaryL
    I was pretty certain you meant not warm or hot. I suck at typing too!
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    Hidden Content A ride in the woods helps me relax and release tension. The fact I'm dragging a body should be entirely irrelevant?

  10. #9
    Senior Member Sthrnromr's Avatar
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    Sounds like valve adjustment time to me, that's about it. Fairly easy to fix. Get errrr done.
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  11. #10
    Junior Member BrotherJim's Avatar
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    I had this happening with my '89. When I bought it, I thought the valves were a bit noisy and asked the seller about his adjustment intervals. He said he'd rather hear the valves than burn up his engine. Hmm, okay. One of the first things I did was check and adjust the valves (engine cold), but they always seemed noisy to me, even though the bike ran great. Adjusted again and again and the same thing. I couldn't stand it anymore! As it turned out, one of the keepers had gotten hammered (forget which valve) and a valve was bent, probably from never adjusting them! Although I do most of the necessary maintenance on my machines, I'm not the best mechanic, so I took it to a trusted local moto shop for the work. Cost me about $400 for the labor and some new parts. Problem solved and I couldn't be happier. Once sorted, you're still gonna hear the valves, but at a much lower, reasonable level. Good luck!

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