hesitation on 6th gen at level throttle

hey folks,
Wondering if anyone has suggestion for this problem wi my 2007 RWB wi 12k miles.

previous owner had done a partial gut of exhaust - just drilled several holes in the end of each can around the outlets under the covers. no power commander or other mods except speedo healer. Its not that loud so i dont think its changed the flow that much. ?

I just had a chance to start putting some miles on the bike after buying it, and am seeing a hesitation and stumble at steady throttle. it happens from 3k up to around 5k, but not when decellerating or accellerating. only steady throttle settings. Checked air cleaner - found some mouse shit and chunks missing from the rubber intake, but seems very clean otherwise. maybe mouse ate something else like vaccuum line somewhere? the damn thing had also ate wires in the tail section but i chased all those down and silicon-taped em.

i replaced most of the tank wi fresh gas and added some injector cleaner - didnt help. Hoping I just got a tank of bad gas but I dunno...

off the Airline in Aurora, Maine on Monday

 

no pics to

 

seemed better on the way to work today - maybe it is just bad gas...

 

there is a problem with the fuel map, 3-4 is uselss and lugging engine, 4-6 runs better, but you need to run the vtec a lot more 7-9rpm. where is the pics?

 

Hi, i have the same problem with my 2002. I know it has nothing to do with running too low an RPM. This engine should not stumble or hesitate at any RPM above 1500. Mine is random, some days perfect some days aggravating. I noticed a new symptom recently on one of its bad days: when i briefly blip the throttle to 5000 and back to idle, the motor shuts down entirely instead of leveling off at idle. Fortunately i am moving along and can bump start it. I think that i will find something wrong with the wiring or the VTEC systems which means a trip to the Honda dealer. The local MC shop doesnt know these VFRs very well and all they did was suggest new plugs and filter. I think that was a grope on their part, but i will do the plugs before making an appointment.

Keeps us apprised of what you find and i will do the same.

- Miles

 

Thanks - i will let you know what i find

 

Hoodo, checkout these forum discussions, have some ideas for us to ponder, we are not alone!
If i knew that gen 6 was so prone to this, i might have bought a gen 5.... lol!
Here's to hoping the Honda shop has a VFR guru that has seen this before!
Later.


http://vfrworld.com/forums/showthread.php/3713-Intermittent-hesitation-and-just-bad-running

http://vfrworld.com/forums/showthread.php/20341-Throttle-Hesitation-Is-it-normal

http://vfrworld.com/forums/showthre...6th-gen-at-level-throttle?p=485010#post485010

http://vfrworld.com/forums/showthread.php/7247-6th-Gen-Hesitation-on-Part-Throttle

 

pretty sure its not fuel at all. I found a tight link in chain
should have looked for that first. Duh....
i guess i got fixated on fueling issues because of modded exhaust

 

wax idle unit defective

 

Is this like some kind of beat-in ritual to join the gang?
You sic this asshole on the new guys in order to weed out the weak ones?

 

If you put it on a dyno and run the machine in steady state in that RPM range you will see it is a fuel mapping issue from the factory. It is due to emissions. It also does it at the VTEC transition. A Fuel controller and a few hours on a dyno to get it mapped correctly will solve the problem.

 

Mine was doing the same thing, I would check your starter valves this cleared up a most of the issue for me.

 

Sorry, not on purpose ... we feel your pain too.

 

Suggestions have been made on several occasions that Norcalboy seek help for his anger management problems. Painful to watch sometimes.

 

Fuck you, troll. ;-)

 

First, pay no attention to sonofwolf. Other than for entertainment purposes such as:
Good recipes for kitten
How to concoct an oil that no one has ever used
How to drop your bike and get a Harley Dood to help you pick it up.
How to pick up shemales in 2 easy steps.

Norcal is probably right - a mapping issue. But you could look at a few other things...just because.

Drilled exhaust won't make any bit of a difference.
Why is there a speado healer? Was first owner obsessed with knowing the real speed since most bike speedos are off. Or, were the sprockets changed and he needed to correct it? (Go count the teeth if you can't see the stamping in the sprocket). And that could lead to checking your chain tension.
Did you check all your connections to make sure the mouse didn't work them over somewhere else?
What's your idle speed? While factory is 1200 +/-, plenty of us stay on the high side of that (1200-1400)
At 3K RPM, you're at the low end of where these bikes like to be run/cruise along in. I'd suggest a minimum of 3500 even for just tooling around town. (No disrespect Miles, but the inherent nature of these V4s will absolutely cause stumbling and hesitation at 1500 RPM, unless you've taken the time/$ to do as Norcal said).

You'll get it sorted,hoodo.

 

It would seem I knew what is wrong, all this neg stuff was made up by BB

 

Paying the tab for "a few hours on a dyno" and some kinky sex tossed in, anyone might have the same problem. There is always the priority issue too.

 

Maybe you can help Norcalboy with the kinky sex part too. One of those no need to post pix things IMO.

 

i 2nd syncing the starter valves its an easy diy maintenance item that helps with off idle and low rpm issues. you can even diy the gauge with some tubing.