Engine knock at low RPM's? - Kawasaki ZX-10R.net
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post #1 of 11 Old 04-06-2008, 09:31 PM Thread Starter
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Engine knock at low RPM's?

Rode ALL day today, and while in stop and go traffic today, when I started off and gave it some juice, I heard some engine knock when I first twisted the throttle, until the engine started to rev. Bike only has 5000kms on it. I use premium pump fuel. Any idea's? is it normal? havent changed to the 16 tooth front yet.
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post #2 of 11 Old 04-06-2008, 09:34 PM
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sounds like bad gas
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post #3 of 11 Old 04-06-2008, 09:35 PM
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I'm assuming it's a stock bike?
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post #4 of 11 Old 04-06-2008, 09:43 PM Thread Starter
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I'm assuming it's a stock bike?

At the moment...its bone stock. Nothing at all done yet.
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post #5 of 11 Old 04-06-2008, 09:43 PM
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Bad gas is a likely candidate. If you have a timing advance module on you may have it advanced too far. But it sounds like preignition is the problem cause it usually happens at a low rpm under load. Kinda reminds you of what a chain might sound like slapping your swingarm.
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post #6 of 11 Old 04-06-2008, 09:51 PM Thread Starter
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yea, it was only when I really gave it some juice to try and get a nice jump. (pulling the hole shot in between traffic stops )

But thats the only time it knocked.
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post #7 of 11 Old 04-06-2008, 09:54 PM
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Just finish running that tank and then buy gas elsewhere. Always run the high octane stuff (93 around my parts). For the time being, don't be gunning it from a low rpm and you won't have any problems. If it starts to do it, just back off of the acceleration for the time being.
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post #8 of 11 Old 04-06-2008, 09:54 PM
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yea, it was only when I really gave it some juice to try and get a nice jump. (pulling the hole shot in between traffic stops )

But thats the only time it knocked.
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Originally Posted by axo250 View Post
Kinda reminds you of what a chain might sound like slapping your swingarm.
If it's only when you jump on it this might be the case.

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post #9 of 11 Old 04-06-2008, 09:58 PM Thread Starter
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no its not chain slap, I know the difference..its engine knock for sure. and It would continue for a while unless I eased up off the gas.
It might very well be bad gas since I never heard this before on this bike.

I do have a bottle of octane boost in my garage...think I should throw it in? or just wait till the gas is done and put fresh gas in?
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post #10 of 11 Old 04-06-2008, 10:15 PM
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Thats what i was thinkin!!......fill her up with 93 and throw some octane boost in it and see if that helps.........
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