if its tight and still leaking you may need to re tap the hole into the block with a larger size thread and then insert a new larger size bolt.
Investigations Person says;
Providing that the bolt and sump threads are in good condition, check that a washer is not normally fitted, where I am most if not all sump plug bolts have copper washer fitted.
You'll first need to determine where the fuel leak is coming from and then replace or repair the leaking component .
Either theres a clog. or clogged on your engine blog or on your hose.
Hi, It could be a few things wrong. Usalley a motor revving is caused by a vacuume leak at the carb base
bad gasket or oil seal, loose oil plug, try to wipe off excess oil and run machine in a stationary position to find leak.
Dirt.
Put an inner tube in the tire.
it won't affect the performance unless it leaks causing overheating and blows the engine. If it don't leak you get away with it It will more than likely leak. If it doesn't leak, you may get away with that one broken bolt. It depends on which bolt it is you broke. I personally would use an Easy Out to remove the bolt and install a new one. That way, you know it will not leak. This time use a torque wrench, and torque to specs, to make sure you don't break it.
Check for a vacuum leak on the intake. if there is no vacuum leak then you will need to rebuild the carburator. if your bike is injected change out the injecters
To effectively perform a bike tube repair for a puncture or leak, follow these steps: Remove the wheel with the flat tire from the bike. Locate the puncture or leak by inflating the tube and listening for the hissing sound. Use a patch kit to patch the hole in the tube. Roughen the area around the puncture with sandpaper, apply glue, and place the patch over the hole. Press firmly on the patch to ensure it adheres properly. Wait for the glue to dry before re-inflating the tube and re-installing the wheel on the bike.
A loose crank pully retaining bolt will make it leak.
Where's the leak? Wheel cylinder, repair or replace, rusted line, replace, master cylinder, repair or replace.
Improperly installed gasket, failed crankshaft seal, stripped bolt, warped timing chain cover, dirt or grit between the cover and the block... that's just a few ideas. I wish I could help more.