slow revs drop

richieps13 · Post by **richieps13** » Sat Mar 03, 2012 5:33 pm

hi all, new to this site and new to motorbikes. ive just bought a vfr nc21, and everytime i give the engine a little rev, they seem to take a while to drop back to idle. does anybody know what the fault could be. cheers

Post by **Drunkn Munky** » Sat Mar 03, 2012 5:35 pm

Loose inlet rubbers maybe

richieps13 · Post by **richieps13** » Sat Mar 03, 2012 5:38 pm

Drunkn Munky wrote:Loose inlet rubbers maybe

i did try tightening the clips on them, got a few turns but nothing major. is there any way i can test? wd40 sprayed at rubbers etc?

Post by **Drunkn Munky** » Sat Mar 03, 2012 5:45 pm

Spray easy start aroud the rubbers with the engine running to see if the revs rise but bear in mind that if the easy start is sucked up through the airbox then the revs will rise regardless.

Its not going to hurt hetting the carbs off and checking them and making sure the inlet rubber clips are seated right also.

Post by **cbr400rrn** » Sat Mar 03, 2012 7:41 pm

Has your handle bar grip worked its way loose and catching on the bar end weight?
Have a look, its a fix that will cost you nothing before you look elsewhere

Post by **lizard821000** » Sat Mar 03, 2012 8:03 pm

normally a sign of a lean pilot or as said, snagged throttle or air leak. check all .

slow revs drop

slow revs drop

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Re: slow revs drop

Re: slow revs drop

Re: slow revs drop

Re: slow revs drop