Sudden High revs when cold starting in traffic

Well. The bike is done. About 13 hours of research and fucking around with it and the issue seems to have been fixed.

I am kind of disappointed in Honda Canada or Honda Japan for that matter for not coming up with direction for the tech to follow. They get a failing grade from me. Surely their engineers should have had opinions as to what was wrong with the machine they designed. But when I checked with Honda Canada, basically they were mute. He did check here for some ideas though.

It was NOT the wax sending unit as I thought it might be. Among many other things, he discovered that I had some of the vacuum lines routed incorrectly. Seeing as it was me who tried to fix the wax sending unit, that is quite possible. But that fix made no difference in the problem.

The last thing he worked on before the problem disappeared was to balance the starting valves. He discovered that the left rear cyl was way out. Once he balanced these valves, the bike ran well. Both he and I took it out for rides on different days in cold weather and no issues.

This was an expensive ordeal. He had put about 12 hours into work and research on this. The bill was high, however I was able to get them to reduce the bill a substantial amount from the initial bill. It was pretty much all labour, mostly research time. Shop supplies amounted to $35.00.

So there we go. Hope this has that fukken gremlin destroyed.

@carlgustav Hope this helps you with yours. If it does, I will send you half my bill LOL

 

Ah ha ... so I have not had the problem for some time ... to my recollection, at least since I replaced my cam chain tensioners earlier this year. And while I was in there replacing said tensioners, I balanced the starter valves ... hmmm. Mine weren't far out, but maybe just enough.

And you can send half your bill to:
1234 Main St.
Anytown, BFE 99999



ACE

 

How awfully strange, at least you've not got the issue resolved so you don't have to worry about it giving itself throttle mid corner on an intersection.

 

I bought beer instead. Come over and help drink it

 

Wait a minute there Carl. You never told me about balancing the valves. You should pay my whole bill!

 

Nope, sorry, you made the deal without digging deep enough ... lucky me .

ACE

 

Turns out my post from October 2017 was wrong and the problem was not fixed. But be damned if I was going back to that dealership and have them spend hours fiddle fucking around on it and billing me for time the way they did, and fixing nothing.

See post # 21 above.

So in reality, the problem is getting worse. When I went with Toecutter and Reg71 to the Baja last October, the problem seemed to be getting worse. At the beginning of this thread, the only time it was reving up there was when it was cold, during the start up in the morning. Once the bike had its morning hissy, the issue disappeared for the day. In Mexico that changed and it was happening a few times a day and the time it happened was all over the clock.

So I pondered just what I was going to do with this bike.

So, I have had a hard on for the 8th gen ever since they came out. Have been watching all over for one. Had to be exactly what I wanted though, white, deluxe model and factory bags. I finally found one at a larger Honda dealership in Vancouver BC. Carter Motorsports. Price seemed reasonable for here. It had some mileage on it. Something in the high 20K km. That is bugger all for these bikes. So. Off I ride to Carters with my bike and credit available on my Visa card to buy this bike. I had the cash put away to buy the bike on credit and pay that off soon as I got home. I would take whatever they offered me for my present bike. In my mind, I would be riding back to Chilliwack with this new bike that day and my problems with this reving issue would no longer be my problem. I was really excited that day.

But. No purchase without a good test ride. Took out that 2014, pearl white with the bags. Exactly what I wanted except that it was used. It ran wonderful. BUT WAIT ! The ergonomics were quite a bit different than the 6th gen. This 8th gen, the ergonomics below the waist is very much more cramped than the 6th gen. More like a sports bike than a sport tour. I rode that thing around in the city and on the highway for an hour. I was so sore when I got off in the end. I would not be able to ride that bike the same way and as long and hard as I ride the present bike. As much as I wanted an 8th gen, that was not going to happen now. So what now?

Carters is a big Honda dealer in Vancouver, probably the biggest in western Canada. Their shop had several techs working there. That afternoon, right after the test ride, I wheeled my ride into their shop and explained the problem with the bike. Seeing as I wasn't going to spend money on a new bike, I had cash available to spend on this bike now. Their service writer and the tech talked it over and were confident they could find out what the problem was. But the bike had to be cold. So next day I trucked the bike in. The tech took it for a spin and sure enough the problem reared its ugly face for him. BUT HEAR THIS !. Tech said that other than that issue, this bike ran like a charm. He could not see any reason why, once the reving issue was resolved, why I would not get another 100K km out of it. That made me feel better fir sure. I will likely be dead before I rack up those kms the way I ride these days. They talked it over and were quite sure it was a clutch problem. I kinda thought it was clutch at one time but I am far from being a tech. Anyways the bike remained there for them to work on it. Parts had to be ordered. They would call when they arrived and bike was done.


Got a call from them. It was in fact the clutch. Sent me photos of some of it. These inner and outer clutch baskets were severely worn. I said to go ahead and order the parts and rebuild the clutch. Parts were back ordered and not available until November sometime. I tried to find them in USA and same thing. But about a week ago, parts were in, and work began. A couple other things were done as well.

Saturday, they called and the bike was done. Wednesday I got a ride into Vancouver and picked up the bike, and rode it home. Problem never resurfaced. Bike is done. And hopefully the clutch was in fact the problem. Having seen the parts they took out and getting an explanation from the tech, I am fairly satisfied they found the problem and fixed it. I am just elated about this. The ride home was orgasmic!

 

Good to hear you finally got the bike sorted out.

Shame about the 8th Gen - they are also starting to be available at decent prices this side of the pond so I have been looking to upgrade. I am therefore interested by your comment about the ergos being different. Did you ever fit Helibars or similar to your 6th Gen which may explain why the 8th Gen felt wrong?

 

I did put helibars on my 6th gen. It made a difference on that bike but not a lot. I got a screaming good deal on a set that were third hand but never used. Knowing the difference it made, I would not have bought them at anywhere near full price though. Thing is, the helibars would make no difference in this case. The ergonomics change was below the waist only. My legs can't stay that cramped for long at all. BWeis found this for me. Interesting site and all about ergos.

http://cycle-ergo.com/

But yes. I was just soooo dissappointed with that. I had my heart set on getting and 8th gen when aI was done with this one and I thought I WAS done. Not now though. And I am kind of happy about that because I have a long standing fondness to this bike, it being my first motorcycle and the bike that took my cherry and took my motorcycle riding virginity.

 

I am so please to report that the revving issue has not raised its fukken ugly head again. Right now, I am fighting with myself mostly, getting the right new EBC rotors for my bike when everything is closed down for the covid thing. I should be able to get that resolved soon though I hope. This weekend the old rotors go back on until I get the proper EBCs. There is still a lot of meat on them but I think they are a little warped.

 

Good afternoon from the UK
I have resently got my self a 2007 vfr 800 and I think I am having the same problems
On a cold morning I start the bike up the choke kicks in rpm go to 2000 ish but as soon as I pull the clutch in and put in to gear the rpm rises to 3500 rpm as soon as I pull clutch in and select nutrul it go back to 2000ish this problem only happens when the bike is cold
Hellllllllllp me please

 

Oil cold, fast idle kicks in, you pull clutch, now no longer spinning the transmission with the cold oil, rpm rises...... perhaps variation where the wax motor is set. If your idle returns to normal when warmed past the cold idle period, ride more, worry less.

 

That sounds remarkably like my original issue. And as I have found out through the work of good technicians, it was the clutch. Photos are a few posts above. It has been running fine for almost 9 months now.

 

I will try and post a video up some how I only bought the thing last night when I view it the other day I left the bike to idel untill the bike was warm and choke had cut off

 

What is the mileage on your new to you bike?

 

Certainly, Randy, there can be other issues, I'm just talking about the simple stuff that may be normal. If it settles down after cold idle, then I'd not be too concerned. If it acts up when it is warm, well, time to look for something perhaps, again starting off with the basics and going from there. Might be as simple as tweaking the wax motor (even though the FSM cautions against it, sometimes ya gotta do what ya gotta do). Maybe even a sync of the starter valves might cure it.

 

25000 miles

 

Agreed. I just pointed out the resemblance. I went through a fair amount of cash trying to figure out what was wrong with mine, listening to some advice here, and elsewhere, including the was sending unit. I just don't want Derren to spend a lot of money on maybes when he could suggest to his tech, if he has one, what someone else has arrived at.

Good thing the day I rode to Carters Motorsports in Vancouver to buy a used 8th gen, I found out I could not ride that bike, so stopped in their shop to discuss my problem with their great techs,

 

I really hope it's some thing simple and iv not bought a lemon
Lol

 

I sure can't say mine was a lemon. I bought it new and this problem did not surface until it had around 200,000 km on it. Seeing as yours is much lower, maybe it is not the clutch after all. But I might wonder if your odometer has rolled over. You should be able to tell by switching the reading from metric to imperial and do the math. 25,000 miles on the dot is exactly 40233.6 km. Here is an on line calculator you can use:

http://www.worldwidemetric.com/measurements.html

Check it at 25,000 miles and again at 125,000 miles see which lines up.