colinworth79 Posted November 4, 2016 Share Posted November 4, 2016 Not had a problem like this before and wondered if anyone has come across this - bike gsxr 750L totally stock uk bike . 19000 miles from new. When the bike is ridden in traffic as it gets hotter the engine revs will start to creep up by them selves up to about 3k but if you blip the throttle quite hard they will then return to where its been set 1500. Same thing will happen when you pull up at the next set of lights . I had the carbs off when I first got it and removed the float bowl and cleaned them out (stock jets) and there is a new genuine Suzuki throttle cable fitted couple of weeks back . I'm thinking maybe slide sticking or a split in one of the rubbers onto of the slide maybe ? Quote Link to comment
R1guy Posted November 4, 2016 Share Posted November 4, 2016 (edited) Sounds like an air leak to me, so as you said- possibly split rubber Edited November 4, 2016 by R1guy Quote Link to comment
KATANAMANGLER Posted November 4, 2016 Share Posted November 4, 2016 An air leak would normally mean the revs were slow to drop too. Are the revs hanging up generally and taking they're time to drop? or is it just sticking and then releasing? Quote Link to comment
wraith Posted November 4, 2016 Share Posted November 4, 2016 If it's only doing it when hot give it a good service first and don't forget the air filter as I have seen lots of bikjes have running problems because of a old dirty filter, then check for air leaks and check that the choke is working right and not sticking. Quote Link to comment
colinworth79 Posted November 4, 2016 Author Share Posted November 4, 2016 bike was given a full service before I started using it to commute. Plugs , oil , air filter ect . Revs only start to hang up when its stop start traffic for a few minutes. Odd that if you snap the throttle open quick it then cures it . Only thing I need to do is to balance the carbs hopefully next week end . Quote Link to comment
Fula28 Posted November 4, 2016 Share Posted November 4, 2016 Check carb diaphragms , had one with pin hole In ,it used to mess with return to idle! Quote Link to comment
CockneyRick Posted November 5, 2016 Share Posted November 5, 2016 Check you seated the diaphragm rubbers in the groove on top of carb, as it may have pinched too. Will cause same problem. Quote Link to comment
wraith Posted November 5, 2016 Share Posted November 5, 2016 Also check that cable and carb linkage are all free and not sticking. See the butterfly links sticking but will work when given a hand full. Just me but I always start at the basics then go for the more in-depth, see people strip and put new can chain in a gsxr motor when it just needed the trencher sorting Quote Link to comment
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