GTS OWNERS CLUB

Athena · Joined: 12 Oct 2008 Posts: 19

Picked up my second hand GTS 250 today and well pleased.It has a PM exhaust fitted but apart from that it is standard.

I spent this afternoon getting used to it but the problem I have is when I slow down at a junction it " Back fires " ??? It seems to happen when I throttle off down to slow speed ??

This is the first four stroke I have ever had so Im still getting use to it so it could be just me ??
What am I doing wrong or is there a fault with the scooter ? my mate thinks its me getting use to the throttle.

If this is a fault how do I go about fixing it please

Thanks for your help

Cheers

Athena

rainham boy · Posted: Sat Oct 18, 2008 6:51 pm Post subject:

might be worth disconecting the battery for a while then reconect it and

let the scoot tick over for 10 miniutes or so to reset the ecu to the pm pipe

then try again to see if it improves the popping
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Darkside, Norwich Broadsmen SC

MikeHolland · Posted: Sat Oct 18, 2008 9:16 pm Post subject:

Had a PM on my GT200, and had the same experience. It seems to be a standard feature with the PM. The only cure I found was to close my throttle slowly when coming to a stop.

Don't know whether PM's decibel killer would make a diference.

Mike
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Vespa GTS250 Vintage Red

harrysgame · Posted: Sat Oct 18, 2008 9:30 pm Post subject:

Mine and our Steves is the same. Seems it only happens when its cold. Once it warms up its fine.

smudger · Posted: Sat Oct 18, 2008 9:54 pm Post subject:

Thats what PMs do, mine is worse when cold, but it never goes away.... Not on mine anyway.
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Maver · Posted: Sat Oct 18, 2008 10:52 pm Post subject:

smudger · Posted: Sun Oct 19, 2008 8:15 am Post subject:

Maver · Posted: Sun Oct 19, 2008 3:04 pm Post subject:

smudger · Posted: Sun Oct 19, 2008 6:16 pm Post subject:

I did idle it for a good 10 mins first time after reconnecting the battery,

this time I disconnected the battery for 15 mins, then idled it for 15 mins, then rode it and it did seem better, there was still some backfiring, and the engine was warmer than it is at 7 on my way to work. Off tomorrow but will give it a go in the am and see what its like.

Although having said all this I'm gonna put the LV back on tomorrow, in it's new black Twisted Evil

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Jason · Posted: Sun Oct 19, 2008 7:38 pm Post subject:

I must admit I love the burbling and backfiring from my PM pipe, especially when people hear this noisy 4 stroke and turn round to see that it's a scooter!

smudger · Posted: Sun Oct 19, 2008 7:41 pm Post subject:

If it wasn't my daily ride, no question I'd keep the PM on there, but for daily use the LV is the best all rounder. Just my opinion mind Wink

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GWGTS250ie · Posted: Mon Oct 20, 2008 9:42 pm Post subject:

yeah pm is to loud for daily ride , and hate the backfire but mine has always done it Crying or Very sad

did try disconnecting battery but didnt seem any different

but pm great when we are in a pack lol Twisted Evil

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The Instigator ,

smudger · Posted: Mon Oct 20, 2008 9:58 pm Post subject:

I put the LV back on today and it lasted about an hour. PM is defo the superior pipe hands down.

At least I know know I have the right exhaust fitted. Very Happy

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smudger · Posted: Mon Oct 20, 2008 9:58 pm Post subject:

I must add re-reading that post I took the LV off because the PM is better not because the LV broke or anything Wink

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Maver · Posted: Mon Oct 20, 2008 10:00 pm Post subject:

PM KING OF GTs PIPES

Cool

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