madmike Posted August 17, 2009 Report Share Posted August 17, 2009 CBR400RR - NC29 - Gull Arm well.. a while back i posted i had a problem when i blipped the throttle up to 3000 -> 4000rpm, it would idle really low for a couple of seconds OR cut out... Well... someone said it was an air leak, and thanks to TriGGer! found the air leak (there was two of em'!) SO now thats sorted ive noticed something! When im riding along and come to a stop then blip the throttle a little bit it will do the same again, drop to about 500rpm then jump back up OR cut out... BUT! if i come to a stop, give it a big rev... say 6000 -> 7000rpm then blip it up to 3000 or 4000rpm its fine, doesn't flinch... TriGGer mentioned it could be something to do with float heights :eusa_think: Any insights appreciated! thanks Link to comment Share on other sites More sharing options...
madmike Posted August 17, 2009 Author Report Share Posted August 17, 2009 Well thats something i didn't do last time, balance them! gonna get them balanced when i get back of my holidays! If its anything related, I took the plugs out to clean today and noticed two of them had a little bit of petrol just sat on them, not on the electrode part but abit higher up, maybe thats cause the mixture screws need adjusting lol? Link to comment Share on other sites More sharing options...
madmike Posted August 18, 2009 Author Report Share Posted August 18, 2009 BUMP Link to comment Share on other sites More sharing options...
fran9r Posted August 18, 2009 Report Share Posted August 18, 2009 If you ever take the carbs off, balance them afterwards. It makes a real improvement to my 9Rs, and you will thank yourself afterwards. Make sure all the screws are set to factory settings, then see. I've a nagging thought there may be an air leak still, but sort the balancing first. Link to comment Share on other sites More sharing options...
madmike Posted August 18, 2009 Author Report Share Posted August 18, 2009 well im about to head off on holiday for a week tomorrow so when i get back ill get them balanced, been quoted about £20 at a garage, can't find any vacuum gauges for less than that lol Well ive had a proper good look and can't find another single air leak! but like i said, it will blip fine after ive given it a good Vrooooooom.... :eusa_whistle: Link to comment Share on other sites More sharing options...
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