It is because you have an air leak in the exhaust. Tighten up the exhaust clamps.
Al Hatten
'93 Virago XV-1100
VOC #7745
Maui - Poi Country
> 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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