Need help: Rattling sound in engine

[5tr4ng3r]

This morning when i start bike, the engine sound is different from usual. It sounds as though something in the engine is knocking on the metals.

 

However when i ride it, everything else seems alright. No loss in power etc. Can any bikers tell me what might be wrong so that i won't get chopped when i go mech tml?

 

Thanks in advance.

 

PS: My bike is a RXZ. The sound is like when you pull choke, but i've checked my choke it's normal.

[SparkerS1]

This morning when i start bike, the engine sound is different from usual. It sounds as though something in the engine is knocking on the metals.

 

However when i ride it, everything else seems alright. No loss in power etc. Can any bikers tell me what might be wrong so that i won't get chopped when i go mech tml?

 

Thanks in advance.

 

PS: My bike is a RXZ. The sound is like when you pull choke, but i've checked my choke it's normal.

 

normal lah, mine also, cos my dad mod it like that, u can check it out wif ur bike shop or mechanic

[apitBIOL]

something in the engine what to come out ler..open the door for it ^_^ j/k j/k...

 

how old is ur bike?

[kito]

piston maybe???

[SparkerS1]

ask in the respective threads better, ask in rxz thread bah, so that rxz riders can help u, cos currently i not riding rxz anymore

[deckard]

running in??? it will be like that..

[xiaowen]

no problem la. after u ride awhile ok alrd right?

[5tr4ng3r]

how old is ur bike?

7 years old.

 

ask in the respective threads better, ask in rxz thread bah, so that rxz riders can help u, cos currently i not riding rxz anymore

i at first thought this might be a common issue in bikes.

 

running in??? it will be like that..

not running in.

 

no problem la. after u ride awhile ok alrd right?

now ok liao, without doing anything. but the sound for that day is very scary. really very different. can it be something to do with the EO? i've not change for about almost 4000km.

 

anyway thanks for the response!!!

[Bikers Inc]

 

We discussed this in the 'Machine Clinic' section of our inaugural issue (currently on the stands). Did you recently top up your engine oil and/or the engine oil level is above the 'Max' mark?

 

 

 

"The rationale on this theory is that when the engine oil content is at its maximum volume (or slightly over) the crankshaft and the connecting rods beat or whip air into the oil creating foam in the oil. When this foam enters the lifters, the air content in the foam then allows the lifter to tap or click."

 

- Bikers Inc, Issue 1, Pg 54

 

 

 

This phenomenon affects different bikes in different ways so it has to be tested at the individual machine level. So as long as the engine oil level does not dip below the lower, 'Min' mark, there is no adverse effect for the engine itself. Perhaps, due to the age of your ride, this phenomenon is manifesting only now, so lowering the level of the engine oil may counter the problem.

 

All the best and do get it checked out by a qualified mechanic should the problem persist.

 

EDITOR

BIKERS INC

A proud publication of WILD MEDIA PTE LTD

 

[5tr4ng3r]

to check the EO level, do i start my bike or not?

[nastroazzuro80]

to check the EO level, do i start my bike or not?

 

no.........

[loufu]

mine oso got tick sound when starting bike frm cold... after reach destination the sounds seems to disappear... my fren says coz of the EO havent spread evenly yet.. so do i nid to take note of tis probs?

 

 

PS: EO last changed abt 1000+km mileage ago nia

[299]

could be your cylinder prb.

[d0n]

i encounter this same issue on my 4stroke bike as well. the slight rattling only comes in when i cold start the engine.

 

actually i always thot it is due to the piston and piston rings havent warm up and expand, creating the rattling which disappears after some short distance riding.

 

could this be possible as well in addition to what biker inc has put up?