Hi all,

I was doing a service job for a bloke today and when I removed the carby and fuel tank to flush and service I noticed the fuel was bright yellow.

I removed the carby and pressed the primer bulb and it was like it hadn't had a drink for a LOOOOOONG time and was very dehydrated!

In the photo below you will see the yellow stain on the box is the last little bit of fuel that I squeezed out of the carb.

This mower would start on start ya bastard and run perfectly fine but it would not start on the fuel alone.

The fuel also smelled off but by no means the worst I have wiffed.

My guess is there was crappy old fuel in the tank that had started to break down and gum up and when I put fresh fuel in it started to dissolve the varnish but has anyone seen this before? Is there an additive that turns fuel yellow?

After I cleaned out the carb and tank the mower started and ran like new.

I don't remember ever seeing yellow fuel before. clear, black, purple yes but not yellow...

Curious to know what caused this.

Thanks,
Pete.
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