Fuel issues

[jack_auckland]

I ride an XR400. The motor etc is all standard.

I usually use Gull petrol. From cold it will kick start in 6-7 kicks and first kick when hot.

The other day I was in a rush and got some Shell. After my ride I topped the tank up with the Shell. The next day, it was hard to start maybe 20 kicks. It started ok hot but then it stuttered a few times. The tank would have been 50/50 Gull/Shell.

Not realising it was the fuel I again topped the tank up with Shell. Next time I came to start from cold it just would not go. It would fire occasionally, but not keep going.

I drained the tank and carb and refulled with Gull and it went in the usual six kicks.

Is anyone else having fuel problems like this?

[Wellyman]

You should read your manual and see what octane is best for your machine. I highly doubt it will be the fuel itselfs fault.
WM

[riffer]

I dunno.

My bike runs crap on Shell. 13.5-14 km/litre on Caltex.

11.6-12 km/litre on Shell.

[bully]

duno about brands, but i was told by a guy not to use the bio fuels, as its hard on fuel systems and not really proven,

[rat biker 08]

I use BP 98 no probs on my old GS has more power then 91.