how to fix a flat tire in a bike? front tire
get thee to your local bike shop and ask for a demonstration written instructions are just too long and boring.
take the wheel off the bike, take the tire inner tube off the wheel, pump some air into the tube then submerge it in water till you find the leak, mark the leak, dry off the tube and patch it with an inner tube patch kit.
Remove the front wheel from the bike. Even though the wheel is flat, sometimes there is a bit of air left in the tire. Depress the valve and squeeze the tire. The next step is to remove the tire from the rim, but you only have to remove one side. If you have plastic tire irons, use them to pry the tire from the rim. If not, you can use the handle end of a pair of crescent wrenches. Do not use screwdrivers as they will damage the tire and rim. Once the tire is half way removed, remove the old innertube. Check the inside of the tire if you think something punctured it. Be careful you don't cut yourself.whatever it was is very sharp and can be very small. Use a shop rag and wipe the inside of the tire. Next, put the new innertube in and replace the tire onto the rim. Next, inflate the tube with about five or ten pumps of air. This gets the tube in the proper position. Then release that air, then fill to recommended pressure.
