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severe knocking noise and loss of power
Posted: Mon Nov 24, 2008 11:24 pm
by 1undadawg
I recently bought an nc30 (import) with a slight knocking noise at about 3000 rpm and was told by the previous owner not to ride it until i had it looked at.
easier said than done the six year old boy came out in me and i took her for a spin after about 40 mins the slight knock turned into a horrible clattering noise like there are nuts and bolts rattling around inside, there was a total loss in power and it was cutting out at the end of every street
. i havent got much experience with big bikes mainly 2 strokes so i havent got the foggiest what has happened but i know its pretty bad whatever it is. does this engine sound like a total loss or is there a chance it could be revived pls help somebody please
Re: severe knocking noise and loss of power
Posted: Mon Nov 24, 2008 11:26 pm
by viper_biker
Possibly the big ends are gone or a dropped valve, time for a new motor I think.
Re: severe knocking noise and loss of power
Posted: Mon Nov 24, 2008 11:33 pm
by Sligeach
in any case it sounds fooked, no point sugar coating it.
its hard to think what in the name of jaysus was going through your head thinking it would be fine
Re: severe knocking noise and loss of power
Posted: Tue Nov 25, 2008 12:15 am
by 1undadawg
this is what i feared ahh well better start saving pennies again
Re: severe knocking noise and loss of power
Posted: Tue Nov 25, 2008 12:22 am
by viper_biker
You should get a good motor for about £200. Get one from a breakers and ask for a warranty so if it's a dud you'll get your money back.
Re: severe knocking noise and loss of power
Posted: Tue Nov 25, 2008 12:24 am
by 1undadawg
cheers lads your help is much appreciated im on the hunt as we speak
Re: severe knocking noise and loss of power
Posted: Tue Nov 25, 2008 11:10 am
by MexicanGringo
why not open it up and inspect the damage, tho if a new engine is 200quid then itd be cheaper to replace!
Re: severe knocking noise and loss of power
Posted: Tue Nov 25, 2008 11:15 am
by wullvfr
yeah,get yourself a replacement engine and once fitted inspect the buggered one and see if you can solve the problem and get it sold or keep as a spare.....thats what id do anyway
william
Re: severe knocking noise and loss of power
Posted: Tue Nov 25, 2008 4:41 pm
by NC35!
It's almost certainly a big end bearing has failed.
If you are in living in the Southeast of England, I have a good replacement with approximately 15,000 miles on I can let you have for £175 delivered to your door.
Thanks
Re: severe knocking noise and loss of power
Posted: Tue Nov 25, 2008 4:50 pm
by zimm
NC35! wrote:It's almost certainly a big end bearing has failed.
If you are in living in the Southeast of England, I have a good replacement with approximately 15,000 miles on I can let you have for £175 delivered to your door.
Thanks
thats tempting even though i havent got anything to put it in :)
nc30 go-kart ?