Engine Knock???

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Engine Knock???

This is a discussion on Engine Knock??? within the Suzuki SV650 Discussion forums, part of the Other Bikes category; I've got a 2006 SV650 I bought new a couple of weeks ago.It has about 600 miles on it now but it has been making ...

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Thread: Engine Knock???

  1. #1
    Newbie Rallyman's Avatar
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    Engine Knock???

    I've got a 2006 SV650 I bought new a couple of weeks ago.It has about 600 miles on it now but it has been making a knock since it was new. It isn't extremely loud but is definitly noticeable.It is worst at idle when hot. The weird part is that as soon as you put any kind of load on the motor( start engaging the clutch in gear) the noise goes away. The dealer said it was normal of course. It is actually best heard with my helmet on as it drowns out the other noise from the engine. If anybody has anything I'd appreciate the info.

  2. #2
    The Commander
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    jarelj's Avatar
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    Cam chain rattling? Pretty common for the SV if so....

  3. #3
    Rising Star DucOwner's Avatar
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    Rod bearing noise? The rods don't have any issues aside from spinning bearings out on a regular basis...

    Knocking, crappy gas? hmmmm
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  5. #4
    Supreme Being speedwoble's Avatar
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    Is it a knock, or a tap? Could just be clearance between the cam and valves. Should be better after valve adjustment after break-in. But I ride a Kawasaki.
    Bad gas would cause knocking that would get worse under load.

  6. #5
    Authorized Vendor CrimsonCloak's Avatar
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    Cam chain tensioner or clutch rattle would both make that kind of noise and would both go away under load. In neutral does the sound get worse or better when you rev it off of idle?
    748 "Mallard Edition" (scattered from whence it came)
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  7. #6
    Newbie Rallyman's Avatar
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    It's not really a rattle. It almost sounds like a piston or rod noise except that it goes away when you start to move(load the engine). It has that one hit per revolution sound like a rod but not nearly as loud. Pulling in the clutch doesn't change it very much. I'll be taking it to the dealer tomorrow(not the dealer I bought it at)for the 600 mile service and to check the noise. I figure if 2 dealers say it's ok then it probably is. Should it really cost $189 for the first service?!?!

  8. #7
    Newbie strike's Avatar
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    i've got a similar problem with my '00 sv650. knocking sound in neutral or with clutch pulled in (coasting or stopped at lights), but sound goes away under load or if i simply give it even a little bit of gas. my bike has about 10k miles, just started doing this a few weeks ago, and seems to be getting louder. from what i can tell the sound comes from the front of the engine.

  9. #8
    Authorized Vendor CrimsonCloak's Avatar
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    If you do wheelies it could be the front rod.
    748 "Mallard Edition" (scattered from whence it came)
    Monster 1100 (Jarel disposed of it for me)
    2002 ST4S (the "S" is for sucks)

  10. #9
    Newbie strike's Avatar
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    Quote Originally Posted by CrimsonCloak
    Cam chain tensioner or clutch rattle would both make that kind of noise and would both go away under load. In neutral does the sound get worse or better when you rev it off of idle?
    the sound goes away when i rev it off idle. would a rod noise do this as well?

  11. #10
    Authorized Vendor CrimsonCloak's Avatar
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    A light rod knock can be more pronounced at idle when oil pressure is lower and ambient sounds are quieter. Then when you rev it up it seems quieter, but I wouldn't worry about having a bad rod bearing just yet, it's just something we see alot on stunt bikes. Best bet is to find a motorcycle mechanic that's been repairing Suzukis for a while and have him listen to it for a minute.
    748 "Mallard Edition" (scattered from whence it came)
    Monster 1100 (Jarel disposed of it for me)
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  12. #11
    Newbie chadp6889's Avatar
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    I'm new to fourms and I want to post a question. I'm replying to this message since my problem is similar any help is appreciated. thanks

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