02-08-2022, 06:15 AM
(02-07-2022, 08:20 PM)Wagonpeddler_imp Wrote: Just purchased a 2104 CB1100. Waiting for delivery. First bike ever without a fuel petcock...leading to a couple questions. Always used non-ethanol fuel in past bikes (with carburetors)....recommended for the CB1100?
Bike has been sitting for a few months. Would like to replace the fuel in the tank with fresh. IS there a way to drain the tank?
Thanks
Seems some points have not yet been fully addressed:
- any standard fuel looses its octane rating over time, so if the engine needs 87 and you park her with 87 in the tank, the rating will eventually be too low for the engine and cause knocking,
- in your car you can hear knocking (which can destroy an engine), on a m/c you can hardly hear it, if at all,
- if you start with 95 or higher, the time to pass below 87 will of course be longer.
Back to your question. If you tank is (almost) full of old fuel, take a manual pump (cost 10$
, pump it out, add e.g. 98 grade fuel - let's say a gallon or so - and start the engine. Ride 2-3 miles to make sure only the best stuff is in your injection system. Now you can fill up with whatever you care about. Next winter - unless you ride through it - buy a fuel stabilizer, so you can simply forget about pumps, petcocks and octane.
If you don't know what to do with the fuel you pumped out, use it in your lawnmower, knocking is no factor in small displacement engines.
