06 Stumbles

[BPMC260]

I'm not sure if this is a new problem or if others have had the same...so here goes.

I have an 06' with Two Brothers slip ons, a non oiled K & N air filter, Barbian Jumper mod done.

I went for a ride with the wife and towards the end of the ride, about 450 miles, I noticed that the bike seemed like it starting running rich. It would blubber when I rolled off the throttle coming down to a rough idle. I moved the fuel values back to stock and it didn't seem to make any difference in how it ran. We made it back the next day and it seems to run OK off idle but very rough otherwise. I cleaned the airfilter as it was a little dirty and have tried do a TBS but have been unsuccessful. The #1 cyclinder won't sink up with the others, it has a low value of about half of what the others do. I pulled the #1 spark plug and it looked fine. The bike stumbles and almost makes a slight backfire noise through seems to be the number one throttle body based off watching it fluctuate when it happens while connected to my Morgan Cabrtune.

Not sure where to go from here.

Any sugestions?

Thanks,

Bob

 

[BPMC260]

So after further searching and a chastising by some on this board, it sounds like it might be the TPS?

 

[C&C]

It might be the TPS, but by your own admission, your TBS didn't go correctly. I believe I would do a do-over on the synchronization.

 

[radman]

Wouldn't really explain the low value on #1 (but my Morgan will stick a little sometimes, ensure the rod in 1 is free), but the #1 roughness/richness could be a plug wire seperated from the cap. Give 'em all a clockwise twist to make sure they're seated. Return all the idle bleed screws to 1/2 turn open and redo the TBS. TPS going to **** will do a lot more than just rough running-the bike will literally give the feeling it's about to die, as in leave this mortal plane.

 

[BPMC260]

Wouldn't really explain the low value on #1 (but my Morgan will stick a little sometimes, ensure the rod in 1 is free), but the #1 roughness/richness could be a plug wire seperated from the cap. Give 'em all a clockwise twist to make sure they're seated. Return all the idle bleed screws to 1/2 turn open and redo the TBS. TPS going to **** will do a lot more than just rough running-the bike will literally give the feeling it's about to die, as in leave this mortal plane.

I guess I was just grabbing at straws with the TPS. I made a double post and got my knuts busted by the powers that be over it ( because as you can see by my post count I make all kinds of frivolous posts) but they did suggest a link to a TPS post, which is why I thought it might be that.

Anyway, I'll recheck the plug wires and try the TBS again. I originally tried it with a Motion Pro Manometer and had the same problem but I had had nothing but problems with that tool from the get go so I purchased the Morgan model. Much easier to use but similar results with the #1 cylinder. It's just weird because even if i run the RPM up to like 3500 with the Manometer attached the #1 cyclinder is still at about 2/3's of what the others are.

I'll try it tonight.

Thanks for the help,

Bob

 

[BPMC260]

Checked all plug wires and tried to redo the TBS by starting at 1/2 turn out on all. I couldn't even get the bike to run this way, pressure would go up on Manometer/three other cycliners while the bike would stumble and die.

It's looking more and more like I'm going to have to take it to the dreaded dealer.

 

[BPMC260]

Well, the preliminary report I'm getting from the dealer is that it was a split O-ring where the fuel bar enters the throttle body. I'll know more next week.

 

[BPMC260]

Just another update...I picked the bike up from the dealer today and everything seems fine in the parking lot. As I was leaving I jumped on it pretty good and it felt like it was missing some of the throttle throw. I got on the freeway and it felt the same way so when I got home I checked the TPS in the Diag. Mode. and low and behold the TPS reads 17 at the closed positon and just 81 at wide open.

Looks like it needs to go back again...this really sucks.

 

[SkooterG]

Just another update...I picked the bike up from the dealer today and everything seems fine until I go to get on the freeway. It feels like the throttle is not opening up all the way. I get home and get it into the diagnostic mode and low and behold the TPS reads17 at the closed positon and just 81 at wide open.
Looks like it needs to go back again...this really sucks.

Sorry to hear your having such problems.

That is weird on the TPS. I have never heard of a 'bad' one not going to either end of it's limit, just a spot where there will be non-linear progressions somewhere inbetween. With it only going to 81, are you sure your throttle is opening all the way? It's not hanging up, or binding on something?

Good luck.

 

[dcarver]

Hang in there.. You WILL get this issue resolved.

FWIW, my 06 was running 'perfectly' IMHO but the dealer found one cylinder low on compression; one valve sticking open due to 'carbon'... [SIZE=8pt]said I was a ***** and didn't ride the bike hard enough..[/SIZE]

Stay with the facts of internal combustion motors and you'll get this one figured out..

 

[BPMC260]

I believe the problem now lies with what the dealer did when they were diagnosing the problems before. They pulled everything down to and including the throttle bodies off the bike and bench tested everything but some how when it all got put back together they couldn' t take 10 seconds to make sure the throttle was opening all the way. I new right away that something wasn't right, you hammer these thing senough times and you are pretty familiar with what that feeling is and when it doesn't happen your like " Hey, What the F is wrong?"

Either way I dropped it back off this morning so hopefully they can get it figured out on monday.

I'll post back later.

 

[BPMC260]

Well, I got a call from the dealer telling me that it was the cruise control linkage that was causing all the problems. The Service Manager used the term "Unsafe" in reguards to the design several times throughout our conversation. I told him not to do anything else and that I would just pick the bike up and fix it myself. As it turns out when they put it all back together they couldn't figure out o hook up the Cruise Control linkage and at some point they bent the end connector towards the other cables so with every twist of the throttle it would jam up into the other cables. It took me about 30 minutes to remedy the problem last night including the time it took to dissassemble.

I went for a 100 sprint last night and everything works fine including the very "Unsafe" cruise control.

 

[mfletch69]

ECU gone bad?

 

[BPMC260]

ECU gone bad?

They did replace it when it was in the shop. I don't know if they were searching for some warranty work on not because there wasn't anything wrong with it. But I'll take it either way.