1999 R6 - Strange running....

[AngelGrinder]

As per the title, I've only started riding my new bike properly yesterday, and didn't really notice it so much until I got onto the motorway.

Basically, it feels like I'm driving along and dabbing the rear brake (I'm not) and the bike sort of judders. I didn't notice it so much on the normal roads, as I put it down to the surface.

Before me it's been sat for 5 years in a garage, and I think it's only done about 200/300 miles since then. I have a service receipt for oil change/filter and new spark plugs.
The seller said it had the carbs stripped and cleaned, but had no recipt.

Earlier I went out with my brother, and he said it smells like it is running rich.

I'm going to put some fuel system/carb cleaner in the petrol to see if that helps, and keep riding it alot for a bit too see if it's just blowing out the cobwebs.

If not...what ideas do you have? Carbs unbalanced? Cruddy spark plugs? Blocked air filter?

I will check all these out asap.

Also, I am still running standard exhaust, so it's not dodgy fuelling from that!

Any help appreciated!

ta
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Currently Riding - 2002 Aprilia RSV1000 Mille

[Ben.]

err my r6 does this sort of, it feels like theres a fueling problem almost, the bike hates being held at steady revs, and its stutters if you try and hold it at say 5k, it wants to go up through the rev range.
new sparks, gap em (although dirty sparks wouldnt cause the bike to judder)
check the air filters still in good nick.
if they look good its almost definitley the carbs.
edit: what does your bike idle at?

R6's are supposed to have an oil change every 3000 miles might be worth doing it now?
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follow my racing season
Race bike - R6
Road bike - sv650

[TUG]

Sounds like both of you need to get your vac guages out and see how well balanced your carbs are, my fzr did the same before i balanced em.
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Haz ER-5, innit!

[AngelGrinder]

Halflyfe, you basically described the problem I'm having, so atleast I'm not alone.

and cheers Lonewolf, I had a feeling thats what it could be, my dads got the things needed to do it, will go and get myself a haynes manual tomorrow!
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Currently Riding - 2002 Aprilia RSV1000 Mille

[TUG]

Pretty easy to do when u've done it about 20 times...
Should be 3 sync screws for the 3 linkages on the carbs, dunno how to get to them on the old R6's, you get 1 and 2 equal, then 3 and 4, then you turn the middle one to level out all 4 of them, its really easy.
you have to keep setting the idle though, lol or it will rev its knackers off. But ye really easy to do.
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Haz ER-5, innit!

[Scouse]

Aaaaah, I've noticed mine doing this recently too.

I haven't got the time, stuff or patience to do it myself though. Is it a costly thing for a garage to do?

[AngelGrinder]

[Scouse]

[TUG]

[AngelGrinder]

Right, just done mine, absolutely the easiest thing to do, and I'm a total novice - I've never even changed a brake pad by myself.

Only tools I used -

Pliers
Allen Key
Phillips Screwdriver
Vacuum Gauge

Basically, you take petrol tank of, turn off the fuel tap, pull the 3 pipes out.

Take airbox out, disconnect about 6 pipes and undo screws above carbs. Then pull airbox out.

Underneath you will see the carbs and towards the back/bottom are 2 pipes that have a connector between them. You pull the connector out and end up with 4 pipes. You basically plug the 4 pipes into the joints from the Vacuum pump.

Only tricky thing is getting an auxiliary fuel supply into the engine - I cable tied a small funnel and then pushed the fuel hose over the small end of it, and got a friend to keep topping up with fuel.

Then you run the engine, and you will see on the guages how the carbs look, my number one and two were well out.

You look between the holes and will see 3 screws, you use the left hand to adjust 1 and 2, then the right hand to adjust 3 and 4. Then use the middle one to balance them together.

Open the throttle and return it and fine tune all of the valves. Repeat process untill they are all exactly the same.

Adjust idle to reasonable level (there is a small black knob on the inside of the right fairing)

Put airbox and tank back on.


And there you have a lovely running bike!

I would reccomend getting a Vacuum Gauge, and a haynes manual, can't cost more than £100 and give yourself about 3 hours.

Alot cheaper than for a garage!

Thanks xlonewolfx![/list]
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Currently Riding - 2002 Aprilia RSV1000 Mille

[TUG]

[AngelGrinder]

Yea, alot easier than I thought, as I said, I've never really done much mechanically (My dad owns his own garage) but decided I want to start - it might come in handy one day!

Bike runs SO much better now, even on idle and when you open the throttle in neutral you can hear the difference!
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Currently Riding - 2002 Aprilia RSV1000 Mille