RE: [ST] RE: (ST) First gear "surging" on RS

["Ludo Andries \(E-mail\)" <ludo.andries@xxxxxxxxx>]

Martin,

Can you explain what you mean by 'surging'?

Ludo, Belgium
Red 99 ST



> -----Oorspronkelijk bericht-----
> Van: owner-st@xxxxxxxxxx [mailto:owner-st@xxxxxxxxxx]namens Martin Fay
> Verzonden: vrijdag 12 oktober 2001 10:24
> Aan: ST@xxxxxxxxxxxxxx
> Onderwerp: [ST] RE: (ST) First gear "surging" on RS
>
>
> I've just had my '99 ST cured of its surging problems.
> The symptoms were pronounced surging at small throttle
> openings, more pronounced
> when the motor wasn't fully warmed up.
>
> This was going on for a while but because the shop was busy
> (the Triumph
> mechanic broke his leg motocrossing) we decided to wait for
> the 12K service and
> sort it then. Well after the service where all the sensor
> settings and CO level
> were carefully checked the problem was was still evident :(
>
> So, while I was away on Honeymoon I left the ST with the
> importer for a month.
> They found the centrifugal breather (?) was worn and allowing
> oil into the
> airbox.
> This was apparently confusing the FI system causing my
> running problems. This
> part has been redesigned (machined metal instead of cast
> plastic) so a new type
> was fitted and my ST is now sorted.
>
> I had hoped that this would be covered under warranty as the
> problem manifested
> itself before the warranty expired and this is a known
> potential cause of
> problems on the earlier 955 motors. However somehow my bike
> is down as a write
> off on Triumphs database so there'll be no claims approved
> there then. Cost of
> replacement parts and labour was £160.
>
> Anyway, if your Sprint is surging, check for oil in the airbox.
>
> Martin (Howlin' Dawg) Fay
> Ireland,
>
> '01 Aprilia Futura (not for much longer)
> '99 Triumph Sprint ST
> '95 Moto Guzzi 1100 sport
>
>
>
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