Problem, help needed
 

Got a few symptoms of a problem with the bike, just wanted to pick some brains......


Seems to be losing power, all over the rev range in all gears....

Only started happenning after the std can went back on because of an MOT, Its been silicone sealed on and I can't shift it atm so can't check if exhaust is the prob...

Mainly get it when trying to accelerate hard, for example m25 yesterday traffic picked up the pace so I tried to accelerate quite hard and the bike just stuttered as if there was no power left... Is there anything I can check?

Its coming upto 12k service so wondered if it may be the plugs? also thought it could be exhaust as i've got a rene airkit and maybe its being stifled ?

well any help is appreciated cos its getting annoying now and I don't want to go on the end of year rideout like it

It sounds like the mixture is too rich when you crank that throttle... have you made any adjustments to your carbs?

Could be weak sparks. Certainly I have had similar symptoms with other bikes and it's been sparks.

However, IKBA.

well I have been getting crap mileage but the airkit hasn't been touched since it was put in....

Plugs i agree it could be, will have to try changing em

If the standard can has'nt been on for a while, perhaps it's collapsed internally, restricting the flow of exhaust?

SOunds like maybe carb icing? is it early in the morning or late at night?

didn't think it was quite that cold just yet though!!! :shock:

defo not carb icing its been doing it 2 weeks all the time

???

hopeyou get it sorted :toss:

Aah... erm SV325?? I guess knackered sparks or leads, or the old water in the front plug?

Not that I'm a mechanic or anything! Hope you get it straightened out dude!

sorry left a post an dont quite know why the little yellow man is gesturing about.

yes you can tell i am fairly new.


sorrrrrrryyyyy.

mark

any joy with your Bike Ian?

well I still think its either the front plug or something with the fueling, does seem to be running rich...

I've had no time to have a proper look tho, will just have to put up with it for the time being

The colour of your plugs will tell you whats going on...Assuming it's a mixture problem.

Stuck choke is another favourite with this bike. I doubt that replacing the stock can with the richer jetting would make it run that badly, or make that big a dent in the fuel economy. Another thought, if the carb float sticks and floods the bowl, is there an overflow pipe or does it just pour into the motor?

well Nekkid seems to be having a similar problem

http://forums.sv650.org/viewtopic.php?t=14302

Hello Ian,
Always worth checking the black foam under the tank. If is is anyway loose, it can be sucked down(especially under sudden hard acceleration) & acts like a choke over the air intake.
Also, don't just inspect visually, make sure all of the foam is firmly stuck to the tank underside by pinching & pulling(not too hard of course!)
George

more than likely your flooding the thing with the airkit

ie too much air and gas when you crank the throttle

the standard box is a flow restrictor which you now havent got

also as a flow restrictor is the end pipe ( can) and the 3 rd restrictor is the downpipes but these will flow more than the rear can handle anyway