I seem to have noises on my bike and was wondering what could be wrong or if someone has experienced these sounds before

1) Ticking noises from the engine, loud but the valves were checked less than 1000kms ago. My AFR meter says i am running 15-16 AFR indicating lean but my idle screws are 2.5+ turns out. I am suspecting this is an air leak on one of the cylinders but all 4 cylinders click.

2) Metallic clicking/clanging noises when releasing the clutch from standstill, oil levels look good and it is consistent two clicks. I dont see anything lose.

I also have experienced random cylinder dropouts when first starting and once I had the bike lose significant power on the road until i turned the engine off and restarted. I dont know if these symptoms are related.

Any help appreciated.

lalalandrus wrote: 1) Ticking noises from the engine, loud but the valves were checked less than 1000kms ago. My AFR meter says i am running 15-16 AFR indicating lean but my idle screws are 2.5+ turns out. I am suspecting this is an air leak on one of the cylinders but all 4 cylinders click.

2) Metallic clicking/clanging noises when releasing the clutch from standstill, oil levels look good and it is consistent two clicks. I dont see anything lose.

I also have experienced random cylinder dropouts when first starting and once I had the bike lose significant power on the road until i turned the engine off and restarted. I dont know if these symptoms are related.

1. The engines do get very 'tappety' (particularly when hot), if the valve clearances are in spec I wouldn't worry about the engine noise at all. Is that air fuel ratio when it's idling? If so it's about correct.

2. Where's the noise coming from?

Regarding cylinder dropouts when idling, it's usually gummed up carbs or poor spark plugs. If it happens whilst riding it could be a number of things: fuel tap, electrical system etc.

Thanks for the info! I am going to try to get a directional mic to pinpoint the noise.

I have the tappety noise as well on my VFR and my clearances were fine i just think its ones of those things.

I'm also getting the clicking. clunking noise when pulling away in first then it goes away and it does it twice, just had the gear box out and everything was fine and i put a new clutch and spring set in renewed all gaskets and used motul 10w40 sports semi synth in it as well and mine is doing the same thing. very unnevering and i havent a clue what that is, anyone else able to pitch in?

The tapping noise, is it coming from the rear of the engine? if so the rear manifold could be slightly loose/leaking

Drunkn Munky wrote:The tapping noise, is it coming from the rear of the engine? if so the rear manifold could be slightly loose/leaking

i have just fixed that issue lately as my original source of the tapping was indeed a loose manifold. however i am starting to conclude the tapping i am getting now is just the "normal" tapping that people have been saying is common.

onto the clicking!

Dowensy wrote: very unnevering and i havent a clue what that is

unnnerving indeed, i just oiled my chain, will see if it makes any difference.
i did also notice that my front brake rivets click if you touch them after a stop, going to do some experimentation

'Creaking' noises coming from the top shock mount are fairly common on nc30's, to eliminate this as the source just grease it up (or spray lube at least).

A lose nut or washer rattling in the V of the wnginw or somewhere else.

Cammo wrote:'Creaking' noises coming from the top shock mount are fairly common on nc30's, to eliminate this as the source just grease it up (or spray lube at least).

Ahhh I wondered why my bike sounded like a relic every time I sat on it or went over a bump!

Dowensy wrote: I'm also getting the clicking. clunking noise when pulling away in first then it goes away and it does it twice, just had the gear box out and everything was fine and i put a new clutch and spring set in renewed all gaskets and used motul 10w40 sports semi synth in it as well and mine is doing the same thing. very unnevering and i havent a clue what that is, anyone else able to pitch in?

Have you checked the chain & sprockets? Worn sprockets or a loose chain can cause the clunking.