Four stroke engine troubleshoot

			Four stroke engine troubleshoot Motorcycle engine
	Engine will not start				ENGINE STARTS		>>	>>	v
									Engine Runs Poorly
	Inspect oil Warped cylinder Broken ring Loose part obstructing <topend Bottom end v	<SEIZED (Kickstart will not turn engine)	No Start Not Seized >	Check fuel delivery system >	Loosen carburetor drain valve >	No Fuel > Fuel Present v v v v v v	Tank valve Fuel line Cap vent Seat valve Vacuum hose Trash in carburetor	< >	v v High < Speed v v v v v
	Check crankcase		Check for spark v	<	< <	< <			v
Exhaust	< High Compression Valve clearence Timing v	Dry Plug < Wet Plug v	<Spark Present No Spark>	Ignition coil CDI Magneto Switch Check spark	Air <Magneto Pickup	< >	< >	< >	< v Low Speed >	Check Intake gaskets Bowl screws Vacuum line Ignition switch v
	v	>>	>>	^ >	Seat valve Plug gap					AIR Cut-off diaphram spring Blocked passage
	v	>>	>>	>>	v	EXCESSIVE NOISE >	v
					>>	>>	HEAD	Incorrect valve setting (gap) >	Adjust valves>	Check adjusting screw for wear
								Worn cam>	Replace cam
								Worn rockerarm>	Replace rockerarm
							CYLINDER	Cylinder wall worn
								Piston worn
								Piston rings worn, weak, broken
				110cc Top End Diagram GY6 50cc Engine Diagram				Piston pin, connecting rod, worn
								Cam chain tension lever worn
								Cam sprocket worn
				mefast Wholesale 334 874 3831 Motorcycle Parts
							About four stroke trouble shoot

Motorcycle engine