Thanks for your reply Jeremy.
It happens totally randomly.
I had the carbs cleaned and synchronized by a mechanic so I suppose that he
tightened all the screws... I really have no experience with this.
Sometimes if the choke is on it work well but then it does it so I cannot
know if the choke helps or not.
What is the LH case cover? I could try opening it and look at the wire.
Lately it gave some black smoke which make me suspect poor ignition or that
it is running rich. When I changed the spark plugs they were black. I will
look again to see if this is happening again.
When I brought it from the mechanic he said that he cleaned the air filter
but I will look again.
Thanks for your suggestions again.
> From: James J Schneider <jjschneider@xxxxxxxxxxxx>
> Reply-To: Yamaha Virago Motorcyle Discussions <virago@xxxxxxxxxxxx>
> Date: Tue, 28 Aug 2007 13:46:24 -0700
> To: Yamaha Virago Motorcyle Discussions <virago@xxxxxxxxxxxx>
> Subject: Re: [Virago] Backfiring problem on 1985 Virago XV700
>
> "I have a 1985 Viarago XV700cc. When I bought it it wasn¹t running so I had
> the carbs leaned and synchronized, and the rubber manifolds changed. Now it
> runs on and off: It runs smoothly then suddenly it starts backfiring from
> everywhere and lose power completely. It take me some time to start it
> again then it runs OK, until it does it again."
>
>
>
> Does it go batty at a specific condition, such as a given rpm or throttle
> opening? Or is it totally random? First I'd suspect some crud loose in
> the carbs, especially if it has sat for any length of time without running.
> If not that, ignition - maybe a loose connection, maybe a bad TCI. Could
> just be corroded connections at the TCI. OR - I just remembered this
> happened to me - it could be the four pickup wires coming out of the top of
> the LH case cover. Some of the insulation was damaged on mine. Does your
> tack freak out when the problem happens?
>
> Jeremy
>
> ___________________________________________________________________________
> (un)subscribe info: http://mail.itg.uiuc.edu/mailman/listinfo/virago
> archives: http://archives.itg.uiuc.edu/virago
>
___________________________________________________________________________
(un)subscribe info: http://mail.itg.uiuc.edu/mailman/listinfo/virago
archives: http://archives.itg.uiuc.edu/virago
