Predator Top End Rattle

nik.smith · 01-18-2012, 12:30 PM

Hi, I have a Predator TLD and have noticed a top end rattle, I don't think it is cam chain as it really only sound at the top. Is there a common problem with the decompression cam or is it just a case of cover off to see what may be there.
It only happens when the engine gets warm, not from cold start.

Cheers

LEOGM5150 · 01-18-2012, 08:29 PM

that is usually a worn decomp. even the brand new decomp mechanisms can sound like a top end tick. if it is really loud on the right hand side it might be a stretched timing chain but if like you said it is only up at the top it is more than likely the decomp. if it was my machine and it is a new noise i would pull the valve cover and check the valve clearances. see if the decomp is extra floppy and check the timing chain if it is loose replace it.

nik.smith · 01-19-2012, 10:51 AM

Thanks very much, just in the process of removing the cover now.

Cheers

LEOGM5150 · 01-19-2012, 06:53 PM

let us know what you find.

joshr08 · 02-12-2012, 10:33 AM

yeah i had the noise really bad after my bbk install but found it to be my decomp unit. Come join us over at our site Polaris Pro Riders great active site.

01-18-2012, 12:30 PM	#1 (permalink)
nik.smith Junior Member Join Date: Jan 2012 Location: Nottingham UK Posts: 2	Predator Top End Rattle Hi, I have a Predator TLD and have noticed a top end rattle, I don't think it is cam chain as it really only sound at the top. Is there a common problem with the decompression cam or is it just a case of cover off to see what may be there. It only happens when the engine gets warm, not from cold start. Cheers

01-18-2012, 08:29 PM	#2 (permalink)
LEOGM5150 Senior Member Join Date: May 2006 Location: Powell Posts: 4,616	that is usually a worn decomp. even the brand new decomp mechanisms can sound like a top end tick. if it is really loud on the right hand side it might be a stretched timing chain but if like you said it is only up at the top it is more than likely the decomp. if it was my machine and it is a new noise i would pull the valve cover and check the valve clearances. see if the decomp is extra floppy and check the timing chain if it is loose replace it. __________________ come on over and check out our new site http://www.polarisproriders.com/ 2007 OUTLAW 525 IRS 2001 400 TWO STROKE SCRAMBLER

01-19-2012, 06:53 PM	#4 (permalink)
LEOGM5150 Senior Member Join Date: May 2006 Location: Powell Posts: 4,616	let us know what you find. __________________ come on over and check out our new site http://www.polarisproriders.com/ 2007 OUTLAW 525 IRS 2001 400 TWO STROKE SCRAMBLER

02-12-2012, 10:33 AM	#5 (permalink)
joshr08 Senior Member Join Date: Oct 2009 Location: carsonville Posts: 104	yeah i had the noise really bad after my bbk install but found it to be my decomp unit. Come join us over at our site Polaris Pro Riders great active site. __________________ IT WAS THE OTHER JOSH.

01-19-2012, 10:51 AM	#3 (permalink)
nik.smith Junior Member Join Date: Jan 2012 Location: Nottingham UK Posts: 2	Thanks very much, just in the process of removing the cover now. Cheers