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-   -   gutless (http://forums.sv650.org/showthread.php?t=102386)

Wideboy 06-01-08 12:26 PM

gutless
 
as title says really.

took the bike out this morning and it was absolutely gutless :(, i have no idea whats wrong with it. Pulling away is pants and the usual little flat-spot it gets in 1st has gone because it usually kicks in about mid range then i get good power afterwards, but now i don't.

i then thought it was because it needed a service BUT its not due for a service for another 100 miles so its not as though I've been neglecting it.

I last took it out on Monday and it was running perfect, roads weren't wet, all i did was put it in the garage and cover it over and it was bone dry.

im a bit of a numpty when it comes to twins as i've only had experience with singles and mopeds

im going to shoot off in min to get the stuff to give it a service.

sinbad 06-01-08 12:57 PM

Re: gutless
 
How does it sound?

mattSV 06-01-08 12:59 PM

Re: gutless
 
Did I pass you going through Botley?

Ah, just seen your PM ;-)

YZEtc 06-01-08 01:00 PM

Re: gutless
 
See if anything is blocking the air intake or even for a rodent's nest starting to accumulate inside the airbox.
It's possible.

I've read that 1st generation SV-650s use a stick-on sound dampener that's on the underside of the fuel tank, and if this falls away from the tank, it blocks the air intake directly below.

Wideboy 06-01-08 02:04 PM

Re: gutless
 
Quote:

Originally Posted by sinbad (Post 1379459)
How does it sound?

sounds normal thats why i was puzzled

Quote:

Originally Posted by YZEtc (Post 1379461)
See if anything is blocking the air intake or even for a rodent's nest starting to accumulate inside the airbox.
It's possible.

I've read that 1st generation SV-650s use a stick-on sound dampener that's on the underside of the fuel tank, and if this falls away from the tank, it blocks the air intake directly below.

thats what i was thinking. im about to delve into the bike and give it a bluddy good service

Quote:

Originally Posted by mattSV (Post 1379460)
Did I pass you going through Botley?

Ah, just seen your PM ;-)

yes was me, i was in a hurry to get home :D

Biker Biggles 06-01-08 02:14 PM

Re: gutless
 
Sticking chokes/plungers?Always a favourite on the curvy.

yorkie_chris 06-01-08 04:05 PM

Re: gutless
 
Possible sticky choke as mentioned, worth taking them out and cleaning and greasing them and the cables. But it's worth doing that often anyway. As well as removing the foam under the tank, because it does nothing and you might as well.

If that and the air filter are OK then I'd possibly check the carb diaphragms

HopefullySoon 06-01-08 05:11 PM

Re: gutless
 
hi

I'm experiancng simialr probs

[derail]

If i cover the rear carb air intake the bike stalls , if I cover the front carb air intake the bike stills runs , am I right in thinking that the front carb hasn't got an airtight seal and is drawing air in elsewhere .

Sorry

[/derail]

Hopefully Soon

yorkie_chris 06-01-08 05:13 PM

Re: gutless
 
Are they balanced?

If you've got the balancing screw wound way too far out and the idle adjuster unscrewed a fair way then that would allow it to do that, and also be really lumpy and horrible. If that all checks out then have a look for an air leak, if its not something stupid like the carb clip rusted in half then its possible the rubber boot has a hole in it, hairspray works to temporarily seal leaks like that, but it would have to be a big leak if putting your hand flat over the carb mouth doesn't stall it. You're not a million miles from me, give us a shout if you want me to take a look.

HopefullySoon 06-01-08 05:17 PM

Re: gutless
 
If that was at me chris no idea , not got a carb balancer .

I noticed that the front slider wasnt fluttering as the back one was , and have hesitancy under acceleration and crap starting .


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