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Old 13-12-2017, 08:49 AM
HOS HOS is offline
It's about time I shut the fuck up!
Join Date: Dec 2015
Location: England
Posts: 1,557

I had a half tank of supermarket petrol lying in the Busa tank for about 2 months and was due a ride out with a mate. When he came round my garage on his gsxr I got the Busa out and fired it up to warm up for a couple of minutes but it struggled to fire up. When it did eventually fire up it sounded like it was running on 3 cylinders... as rough as a bears behind. Not what you expect from a super smooth missile.
It was struggling to hold any tickover.
So me mate Carl who had got off his bike and rolled a ciggie by now asked me what fuel was in it,? He said its probably gone off and then asked me how old the fuel was? He said that'll be it then, the fuels gone off. What he recommended was taking the bike and filling the tank with full fat Shell UL.
I was like nahhhh don't talk bollox. But he kept on at me to get it up the Shell station and fill it up.
Otherwise we weren't going out to play.
So I listened to him finally and rode through town with the big beastie sounding like a tractor. Rough as fook. While I'm wondering how much more damage I could be doing to the engine riding it like this?
Anyway we got to the Shell station and I brimmed the tank with top posh best supersupreme UL.
Now try it says Carl.
Bugger me it fired instantly and ran sweet as a nut and I'm left thinking WTF????
Didn't miss a beat again and was back to super-smooth.

So I took his word as a given and although it was never as bad again, I have had old fuel in the tank cause the bike not to run well until fresh petrol was added.
Likewise I never had any issue before with petrol left in the tank for months.
But bear in mind that Busa was very new ie: less than 1 year old, so there was no rust or sediment in the tank.

Last edited by HOS; 13-12-2017 at 08:53 AM.
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