Re: [Virago] Back firing

[lawrence miller <lwrnc_miller@xxxxxxxxx>]

if you have after maket pipes and have not rejettend yet need to rejet otherwise the adjustment screw are on the bottom of the carbs screw out to richen it up make sure to adjust both carbs equally.

twocylndr@xxxxxxx wrote:

I run 87 octane.  I thought the higher octanes are really only for higher compression engines.
Richen up the jets...does that mean new ones or just open up the ones in there?

-----Original Message-----
From: Rod Fleming <rod-virago@xxxxxxx>
To: Yamaha Virago Motorcyle Discussions <virago@xxxxxxxxxxxx>
Sent: Fri, 20 Jul 2007 10:22 am
Subject: Re: [Virago] Back firing

Richen up the pilot jets and it should help. Rod

Hi Kurtz.
Does that work? I´ll try with lower Octanes then. I´m using 98 Octanes.
I live in Argentina and own a ´94 XV750. Sometimes it happens to me. Those explosions when I desacelerate... I always think that those things are carburation problems.
Sorry for the writing...

Federico

> Subject: Re: [Virago] Back firing
> From: ckurtz11@xxxxxxxxxxx
> To: virago@xxxxxxxxxxxx
> Date: Fri, 20 Jul 2007 10:08:07 -0400
> CC:
>
> I remember when I was a kid we used to retard the spark on our cars to
> do that .. sounded cool .. my '83 xv920 does that .. still sounds cool.
>
> But if you're foolish enough to want that cool sound to stop you could
> advance the timing, I think, except that the timing is sealed on the
> Virago.
>
> I burn 93 octane. What do you burn? Have you tried running lower octane
> fuel?
>
> hth,
>
> Cy Kurtz
>
> On Fri, 2007-07-20 at 08:22 -0400, twocylndr@xxxxxxx wrote:
> >
> > My '85 xv1000 backfires when I let off the throttle. It doesn't do it
> > all the time...sometimes worse than others. I put new plugs in
> > it...didn't help.
> > What can cause this?
> >
> > I'm the proud owner of a '83 xv500, too. Just bought it 2 weeks ago
> > for the wife. She up graded from a 305csr Kaw. She loves the new
> > scoot!
> >
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