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The TTR250 FAQ web pages -> TTR250 -> Repairs and maintenance -> Strange ticking noise after I rebuilt top end
Post Info TOPIC: Strange ticking noise after I rebuilt top end
yamahaTT250R


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Strange ticking noise after I rebuilt top end
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hey guys, i have recentlytook off the head and put a new gasket plus fitted new rings onto the piston and cleaned the valves, reassembled them then i turned on the motor and it turns but this strange ticking noise seems to have shown up im not sure it was there before but hany ideas on what is could be?

ill post a link up on youtube soon

thanks



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TTRfan


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Stange ticking noise after i rebuilt top end
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I am thinking along the same lines as Martyn. You have almost certainly had to take the camshafts off when you removed the head. Did you check the valve clearances when it all went back together?

When the engine is running, try putting the handle of a long screw driver against your ear and the other end against the head and barrel to see if you can identify more closely the source of the noise.

Brian

 



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yamahaTT250R


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heres the video link:  http://www.youtube.com/watch?v=DOZiq1W_8N8&feature=youtu.be 
yes i did remove the shims + the valves.



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Cubber


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Adam

Did you, by any chance, disturb the valves or shims when the head was removed? confuse

Martyn



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Difficult to tell from the video but it almost sounds like its coming from the cam chain.

Brian



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yamahaTT250R


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so what do you think is it normal?
if not them what should i do



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TTRfan


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yamahaTT250R wrote:

so what do you think is it normal?
if not them what should i do

As I said it is difficult to tell what's happening from the video.

The fact that you are worried and that it is a "new" noise that has happened since the rebuild suggest something is not right. 

The most obvious ticking noise that I have come across was from an engine where a veryy small piece of wire had managed to find its way into the combustion chamber and was bobbing about between the head and piston. 

My suggestion is to take the simple route first and to remove the cam cover, check everything is tight and looks as it should. Also re-measure the valve clearances.

Brian



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yamahaTT250R


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RE: Strange ticking noise after I rebuilt top end
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Hey mate it seems to be  coming from the LH side of the head most likely the intake valves as i did what you told me to with a scewdriver and it seems theat there is a light tapping noise coming from there.



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yamahaTT250R


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Ok i have found the problem, it was the clearances the shims were put back incorrectly and now its all good, thanks for your help marytn and brian!

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TTRfan


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Excellent news - glad it was a simple fix biggrin

Brian



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