fast idle w/ coolant change

Hi all! Great web page and service! I just changed the coolant in my 2000 vfr and now the thing wants to idle at 3000 rpm. Nothing else was done to the bike, just the coolant. I'm thinking something is wrong with the wax module. I've tried blipping the throttle w/o the cap on to get rid of air bubbles, but it just isn't working. Does anyone have any ideas?

 

To adjust your idel, you will need to remove the small rubber plug on the right of your frame to access the adjustment screw. Just insert a #2 cross tip screw driver and adjust your idel to about 1200 only when your engine has had suffient warm-up.

But before you do that, please check all of you emission/vacumn lines for any leaks. You mention that you change you coolant and you may of accidently cause a line to have a leak. A leak can cause high, or rough idel with your throttlebody fuel injection.

Good luck

 

If anyone is interested:
I found the problem with my fast idle. The wax module needed prodding. I moved the adjustment arm for it back and forth several times and it apparently came unstuck. So now all is well.:smile:

 

Hey JRotten, I'm having high idle problems with my (new to me) Y2k VFR800. Clean bike, 26k miles. Coolant was low, drained and filled. Snapped throttle, added more after it sat over night. Level now is good. Bike idles at 2000 rpm. Pulled rubber plug, used a phillips screw driver. RPM went up with a few turns clock wise. Turned counter clock wise, can't get it under 2k. Felt like I turned it a few times, don't want to end up in "no man's" land with it. Any thoughts?

 

YouTube - ‪Honda VFR cold idle adjustment‬‏

 

Right On Rangerscott !!!!

I'll get under the tank this weekend.

Many thanks from San Diego-

G-man

 

I aim to please.

 

fast idle at temp

Rangerscott,

Just took bike out. Idle at start up is close to 1400 to 1300. As soon as I get to 180 degs idle bumps up to 2500 to almost 3000.

Thanks again for the video. Are these adgustments to raise idle at start up? I'm having the opposite problem?

Thanks G-man

 

Yes. It is for cold idle only. The rod pulls on the arm. Which pulls on the starter valves. As the engine warms up the starter valves are pulled less. Once fully warmed up you adjust the idle screw through the hole in the frame.

I set the cold idle to 2k. When the engine is cold, you should see that the starter valve rods are being pulled. When warmed up they shouldnt be pulled and the plate should be straight up and down not pulling on the starter valves.

 

Wax module?? What the heck are you talking about????
Can you show us the part so we know what is going on??
CHHHHHEEEEESSSSSHHH.

 

Theyre on 2000 & up models. Kinda like a 4 wheeled carb vehicle with a water choke. Two coolant line run to it and operates the starter valves instead of a manual cable.

 

They are chokes or choke enrichment not "starter valves"

 

They're called starter valves. I'm not going to argue with you. These engines don't have chokes. The STARTER VALVES allow more air into the engine because the butterflys shut completely closed. The fuel is controlled electronically. The air is controlled mechanically.