Jerky at low rpms
#1
Jerky at low rpms
I have an 02 F4i.
I bought it used at ~12k miles, its now right about 15k, and lately I haven noticed that in first/second gear, if my rpms are anywhere in the 4,000 range, the bike really seems to be jerky. it feels like it might not be getting a constant amount of fuel or something of the sort. i drove around keeping the throttle very steady at ~20-25 mph in 2nd and could definitely feel it acting a little funny. i am going in for an oil change already in a couple days, but was curious if this was something others had experienced or knew about, and if so, what could i do to fix this?
thanks
I bought it used at ~12k miles, its now right about 15k, and lately I haven noticed that in first/second gear, if my rpms are anywhere in the 4,000 range, the bike really seems to be jerky. it feels like it might not be getting a constant amount of fuel or something of the sort. i drove around keeping the throttle very steady at ~20-25 mph in 2nd and could definitely feel it acting a little funny. i am going in for an oil change already in a couple days, but was curious if this was something others had experienced or knew about, and if so, what could i do to fix this?
thanks
#2
#3
Here is the fix
I have been chasing this tiger for a couple months now and I think I have finally seen the light after being hardheaded. The group here has been saying FPR so it is a regular problems for our bikes.
Symtoms I have
Hard start usually have to give it gas
Bike reeks of gas smell, unburned coming out of exhaust (pipe is loaded with carbon on tailpipe)
Terrible gas mileage 25 miles per gallon, 100 miles tankful
Poor idle, bike must warm up to take off
Jerky, hard to take off from stop, lacks power, did I mention jerky like the bike is not getting enough gas and cuts in and out all the time. (Really sucks to ride kinda jerky)
I ordered my fuel pressure regulator from the below link. It is item 20, you also need the o ring.
http://cheapcycleparts.com/model_yea...semblies/14454
Things I have done so far to my 02 F4I.
New K&N Air filter
New Iridium spark plugs
Cleaned the throttle bodies with sea foam
New clutch
New pipe
New Hong Kong shorties levels
Michelin Road Pilot 2's, front and rear (Derby Cycle.com)
Hope this helps, I should know if it solves my problems by this weekend.
Tom
Symtoms I have
Hard start usually have to give it gas
Bike reeks of gas smell, unburned coming out of exhaust (pipe is loaded with carbon on tailpipe)
Terrible gas mileage 25 miles per gallon, 100 miles tankful
Poor idle, bike must warm up to take off
Jerky, hard to take off from stop, lacks power, did I mention jerky like the bike is not getting enough gas and cuts in and out all the time. (Really sucks to ride kinda jerky)
I ordered my fuel pressure regulator from the below link. It is item 20, you also need the o ring.
http://cheapcycleparts.com/model_yea...semblies/14454
Things I have done so far to my 02 F4I.
New K&N Air filter
New Iridium spark plugs
Cleaned the throttle bodies with sea foam
New clutch
New pipe
New Hong Kong shorties levels
Michelin Road Pilot 2's, front and rear (Derby Cycle.com)
Hope this helps, I should know if it solves my problems by this weekend.
Tom
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