Changed back to thumb now have problems

[banshyeehaha]

Hi guys

 

I wonder if you may be able to help me, I recently purchase my Banshee which had a twist grip fitted, I then purchased a stock thumb thottle and all the parts required from Yamaha to turn it back to how it was stock.

 

The bike kicks over on first kick but it is very groggy on acceleration at bottom end, a bit like budbudbudbudbud and then it kicks in and flys.

 

I had this problem all last week when I rode her but got used to it, today I started her up to make sure she was ok for my day out tommorow and on first kick she backfired twice (scared the shit out of me) and now the right hand side exhaust has no power (compression I think you call it) the left exhaust is OK.

 

I have tried tweeking the little silver thumb turns on top of the things that sit on top of the carbs but on the right one it makes no difference.

 

I have checked the spark plugs and they are both covered in oil, when I bought the bike I emptied the petrol that was in there and put fresh in with a mix of about 22:1 the bike has only had this one full tank since I bought it.

 

I was told by the person I bought it from that they rejetted when they put the FMF Fattys on and went up to about 260, I live in the UK if this makes any difference.

 

I really would like to fix this today as I would like to ride tommorow but only 1 exhaust seems to be doing anything.

 

Is there anything I can do to try and fix this, I am unable to rejet as I do not have any, perhaps I could get some new plugs or make changes anywhere else.

 

Thanks for you help guys, I appreciate it.

[Big Blue]

Did you sync your carbs after switching back?

[banshyeehaha]

Did you sync your carbs after switching back?

380243[/snapback]

 

Hi, I actually didn't do the change, a quad shop did it for me but the problem was there after I picked it up, so I can only assume they have or maybe they haven't, could you please advise how I go about doing this please.

 

Thank you

[Big Blue]

Do you still have the tors on? if not all you need to do is level the slides with the screws at the top of the carbs, im not sure of the best way to explain it is some thing you have to look at and to IMO.

[banshyeehaha]

Do you still have the tors on? if not all you need to do is level the slides with the screws at the top of the carbs, im not sure of the best way to explain it is some thing you have to look at and to IMO.

380247[/snapback]

 

Are the TORS the black things that sit on top, if so yes, I had to buy some new ones at great expense.

[kenr74]

Your mix is way too rich. You should be at 40:1 or maybe 32:1.

[banshyeehaha]

OK, I'll sort that out tommorow when I empty the tank.

 

So if I was to add 10 litres of fuel how much oil would I mix in with that

[ripper68]

Your mix is way too rich.  You should be at 40:1 or maybe 32:1.

380294[/snapback]

 

The manual says 20:1 with yamalube and I believe 24:1 with another brand, I personallly run 20:1 with 927 and have no problem/

[kenr74]

The manual says 20:1 with yamalube and I believe 24:1 with another brand, I personallly run 20:1 with 927 and have no problem/

380526[/snapback]

 

I didn't realize you were using liters instead of gallons. 40:1 is for gallons. Not sure what you should be at with liters.

[neilgf]

40:1 is 250mls.of oil to ten litres petrol

[banshyeehaha]

Thanks for all your help guys, I replaced the plugs and it seems a lot better, however, she is smoking really bad, since purchasing I have used 2 full tanks of fuel with a mixture of approx 40:1 but she is still smoking really bad.

 

On starting the smoke pours out the back and after idling for 5 mins calms down a little, by giving her throttle it starts to poor out the back again.

 

Does anyone have any idea what the problem might be, do you think there is something serious wrong?

 

Thanks very much for your help.

[98bonerSTOCKshee]

Thanks for all your help guys, I replaced the plugs and it seems a lot better, however, she is smoking really bad, since purchasing I have used 2 full tanks of fuel with a mixture of approx 40:1 but she is still smoking really bad.

 

On starting the smoke pours out the back and after idling for 5 mins calms down a little, by giving her throttle it starts to poor out the back again.

 

Does anyone have any idea what the problem might be, do you think there is something serious wrong?

 

Thanks very much for your help.

382840[/snapback]

check compression maybe it's time for a rebuild

[banshyeehaha]

check compression maybe it's time for a rebuild

382858[/snapback]

 

The bike was manufactured Nov 2004 are you serious?

[neilgf]

What Jets have you got in the carbs Mark?How did the plugs look when you changed them?

[Rare Scottish Tree Badger]

The bike was manufactured Nov 2004 are you serious?

382882[/snapback]

For the little time that it takes to do, just do it. ... For one thing, it'll rule out problems with your pistons/ rings/ bores. And for another, it'll give you a reference of compression that you can use in the future.

 

Rare.