Why is my bike high?


F

fltdriver

New Member
My bike completed rehab and is no longer high.

I rode 20 miles from work to home this morning, stopped at a gas station by my house to fill the tank. When I started the bike my RPMs were 2200 at idle, sat there for a few minutes waiting for them to drop but they didn't so I just rode the 4 blocks and again let it sit for a minute or two but still had 2200+ @ idle. Shut it off and pushed the bike into the garage, smoked a cig, then started it again-still the same.

My question- Why so high? Before I left for work last night I started the bike and noticed that within 2 minutes the temp was already @165* but I didn't look at the RPMs (was kinda fixated on the temp)

Bike only has < 2k on it
 
Last edited:
R

Rabbitman109

Lumen Junkie
Elite Member
fltdriver said:
I rode 20 miles from work to home this morning, stopped at a gas station by my house to fill the tank. When I started the bike my RPMs were 2200 at idle, sat there for a few minutes waiting for them to drop but they didn't so I just rode the 4 blocks and again let it sit for a minute or two but still had 2200+ @ idle. Shut it off and pushed the bike into the garage, smoked a cig, then started it again-still the same.

My question- Why so high? Before I left for work last night I started the bike and noticed that within 2 minutes the temp was already @165* but I didn't look at the RPMs (was kinda fixated on the temp)

Bike only has < 2k on it
Click to expand...
Is the throttle sticking at all? Check this thread: http://www.600cc.org/forum/f88/fz6r-idle-speed-20069/

Explains where the idle adjustment screw is. Easy fix if your throttle isn't sticking. Also check your free play, you want to make sure that is within spec as well. Also extremely easy to fix.
 
Last edited:
F

fltdriver

New Member
After sitting for about 30 min I got back on to run to a meeting and it started and idled at 1200. Then on my way way back when I started it the bike was idling at 2000.

Would I be alright turning the idle down?-ask because on cold starts it is in the 1250-1350 range if not a tad lower.

I guess my real question is at what point am I shooting for the 1300 range- at startup or after riding for a few minutes, and should there be a difference between the two idle speeds?
 
R

Rabbitman109

Lumen Junkie
Elite Member
fltdriver said:
After sitting for about 30 min I got back on to run to a meeting and it started and idled at 1200. Then on my way way back when I started it the bike was idling at 2000.

Would I be alright turning the idle down?-ask because on cold starts it is in the 1250-1350 range if not a tad lower.

I guess my real question is at what point am I shooting for the 1300 range- at startup or after riding for a few minutes, and should there be a difference between the two idle speeds?
Click to expand...
According to page 7-21 of the owners manual, it states that it should be between 1250 and 1350. Since it is lower, and then goes higher, it may not be a bad idea to take it to the dealer. It is under warranty, so they will be able to diagnose the problem, and fix it. It could be an ECU issue...who knows.
 
P

poWKaw

New Member
I'm with FZRblack, especially if it's under warranty. You don't want things going wrong with your bike no matter how little, if I come off I want it to be my fault, not the bikes.
 
F

fltdriver

New Member
When I started my bike this afternoon it was idling @2000 on a cold start. So I adjusted the idle and it seems to have solved my problems. Thanks for the link to that thread because I was worried about having to remove the tank while it was completely full.

Thanks again. This is why I like forums.
 
D

Deanohh

New Member
I thought normal was to cold start high idle and then settle down to the spec idle as you get to operating temp.
 
K

KeysRider3

New Member
Leaky seals around the intake can cause a high rpms when the throttle should be closed. I had that problem with my Harley.
 
L

leprecaun jon

ESTABLISHED RESIDENT
Elite Member
if youd stop putting meth in the tank XP maybe your bike wouldnt always be "high" :D hahaha j/k......

if the intake seals are leaking you would b able to feel the pressure from compression... near the intake or you would see smoke or something around the seal of the intake....at least thats how i figured that leak out on the cb 250....

like if you start her up and its cold..... how the exhaust has white smoke coming out when its cold.... should have that coming out near the intake or a long anywhere the pressure goes.... like my buddy has a bad seal on his exhaust on his cb 250... i guess its called a flange and it didnt re seal right so when he warms the bike up you can physically see where the leak is...
 
Last edited:
L

leprecaun jon

ESTABLISHED RESIDENT
Elite Member
Deanohh said:
Yes, take it to the dealer under warranty for them to find out why it is not running right.
Click to expand...
:Im With Stupid: do that.... if it has a warranty let it be the dealers problem to solve otherwise your going to be kicking your self in the face
 
B

buzzbomb

Senior Member
Elite Member
fltdriver said:
Is there a way to check the intake seal for leaks?
Click to expand...
On my other bikes, I would spray starter fluid around the intakes. If the rpms shoot up, it's leaky.

On this bike, not so sure. Starter fluid is caustic and can do bad things to paint. I'm also assuming it would have the same effect with fuel injectors vs. carburated, which is what I used the trick on.
 

F

fltdriver

New Member
leprecaun jon said:
if youd stop putting meth in the tank XP maybe your bike wouldnt always be "high"
Click to expand...
Figured out my problem thanks to jon----I've been using 89 octane w/10% METHANOL.... j/k only run premium btw.

buzzbomb said:
On my other bikes, I would spray starter fluid around the intakes. If the rpms shoot up, it's leaky.

On this bike, not so sure. Starter fluid is caustic and can do bad things to paint. I'm also assuming it would have the same effect with fuel injectors vs. carburated, which is what I used the trick on.
Click to expand...
I had heard the same thing but about using WD40, either way I don't think I have a leak. Ever since I turned the idle down it has been steadily idling @1400.

No other troubles with the bike it was just bugging me that I was waisting that little bit of extra gas while sitting at stop lights/signs.

Thanks for your help guys, esp FZRblack cause without that thread it probably would have taken me forever to find the idle adjustment.
 
You must log in or register to reply here.


Top