05-03-2015, 12:01 PM
I thought it was oil, since it looked like oil and was of similar color to new oil (remember, only 300Km on the bike). It also left an oil-like stain on the interlock brick many hours later. If it was fuel I think it would have totally evaporated off the brick in the heat of the sun.
But now when I check the black tube, there are no traces of anything. If it was oil, I would think there would be small amounts at the end of the tube.
So, let's assume it was actually fuel that dripped out. I think this tube is for fuel tank overflow. But the tank was only 2/3 full. It was a reasonably warm day (25degC), but that shouldn't cause any big amount of fuel expansion.
It also looks like I had some drip out overnight last night in the garage. Cold engine. The only thing I did prior to this was clean the headers (Optiglanz works great), with a thorough rinse with the hose. This must be a red herring, though the timing is an awful coincidence. Never had any fuel/oil dripping prior to the cleaning & rinsing.
But now when I check the black tube, there are no traces of anything. If it was oil, I would think there would be small amounts at the end of the tube.
So, let's assume it was actually fuel that dripped out. I think this tube is for fuel tank overflow. But the tank was only 2/3 full. It was a reasonably warm day (25degC), but that shouldn't cause any big amount of fuel expansion.
It also looks like I had some drip out overnight last night in the garage. Cold engine. The only thing I did prior to this was clean the headers (Optiglanz works great), with a thorough rinse with the hose. This must be a red herring, though the timing is an awful coincidence. Never had any fuel/oil dripping prior to the cleaning & rinsing.