Jonway 250cc leaking coolant, is it overflow or hose disconnected or bad thermostat

50/50 premix that is made for aluminum block engines Prestone 50/50 in the yellow jug

The best size and type hose to use is the same as what was used in the radiator. Your local auto parts store will have it. If you need more help with this, let me know. Good luck. ... 1992 Suzuki VS 800 Intruder The best size and type hose to use is the same as what was used in the radiator. Your local auto parts store will have it. If you need more help with this, let me know. Good luck. ...I am having a problem with coolant leaking out of the overflow. I have checked the radiator, water pump and hoses. No leaks there. I have 2 theories. First theory is the head gasket. I have not checked that. The other is the thermostat. When the coolant is cold the overflow is almost empty. When it gets hot the overflow is full. I have replaced the coolant and the overflow is full again. Any ideas?More than likely the thermostat is not opening up, when the coolant gets hot and the engine is running, the thermostat should open and the coolant should flow from the radiator to the motor and back, causing the overflow to empty out, now when it gets ... 1995

It could be a bad radiator cap. If the cap isn't sealing or releasing correctly it can cause coolant to siphon excessively out of the overflow tube. It is also possible that the discharge from the overflow tube is normal and coolant is being consumed by engine overheating, a leaking head gasket or a coolant system leak elsewhere.

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I need to set my tappets for Jonway yy 250cc v motor cycle

REPLACE THE THERMOSTAT AND RADIATOR PRESSURE CAP.IF COOLANT LOW, ADD MORE COOLANT THROUGH COOLANT OVERFLOW UNTIL COOLANT LEVEL IN THE COOLANT OVERFLOW STAY AT FULL COLD MARK.REASON POUR COOLANT THROUGH COOLANT OVERFLOW MOST GM CARS DONT HAVE RADIATOR CAP.WHEN YOU GET COOLANT LEVEL OKAY, CRANK CAR LET IT IDLE UNTIL ENGINE GET HOT BUILD UP PRESSURE THEN TURN OFF CAR.CHECK FOR COOLANTS LEAKS AT THE RADIATOR HOSES,CHECK FOR LEAKS AT THE RADIATOR, CHECK FOR LEAKS AT WATER PUMP WEEP HOLE IF YOU SEE COOLANT LEAKING FROM WEEP HOLE REPLACE WATER PUMP. IF CAR OVERHEATING WHILE IDLING YOUR COOLING FANS NOT WORKING CHECK COOLING FANS FUSE AND RELAYS.IF FUSE AND RELAYS OKAY THE ENGINECOOLANT TEMPERATURE SENSOR BAD.

CAR OVERHEATING FIRST CHECK FOR LOW COOLANT IN THE RADIATOR COOLANT OVERFLOW JUG.IF COOLANT LEVEL IN OVERFLOW JUG LOW REFILL ADD COOLANT BACK TO THE FULL COLD MARK.PUT RADAITOR CAP ON COOLANT OVERFLOW JUG START ENGINE LET IT IDLE UNTIL IT OPERATING TEMPERATURE.MAKE SURE TOP RADIATOR HOSE GETTING HOT WHILE ENGINE WARM UP.IF TOP RADIATOR HOSE DONT GET HOT WHILE ENGINE IDLING YOUR THERMOSTAT COULD BE STUCK CLOSE CAUSING CAR TO OVERHEAT.IF TOP HOSE IS GETTING HOT.CHECK FOR COOLANT LEAKS CHECK TOP RADIATOR HOSE AND BOTTOM RADIATOR HOSE FOR LEAKS.CHECK FOR LEAKS AT THE RADIATOR CORES AND PLASTIC SIDE CONTAINERS.IF ALL IS GOOD ENGINE OVERHEATING WHILE IN A LONG TRAFFIC LINE, COOLANT FANS NOT COMING ON.COULD HAVE FAULTY ENGINE COOLANT TEMPERATURE SENSOR OR BLOWN COOLING FAN FUSE OR RELAY.COULD HAVE PCM FAULT.MAKE COOLING FAN ELECTRICAL CONNECTORS AND WIRING NOT DAMAGE OR BROKEN.

WELL YOU NEED TO DRAIN COOLANT LEVEL BELOW THERMOSTAT LEVEL.YOU HAVE TO DISCONNECT MAF SENSOR LOOSEN AIRDUCT 2 LARGE CLAMPS LOOSEN REMOVE 4 SCREWS TO AIR FILTER COVER LIFT UP REMOVE COVER. THEN REMOVE AIR FILTER AND HOUSING, FIRST DISCONNECT MAF SENSOR.YOU HAVE TO DISCONNECT THROTTLE CABLE AND SHIFT CABLE.YOU HAVE TO DISCONNECT REMOVE THROTTLE BODY COOLANT HOSES DISCONNECT IDLE SPEED CONTROL VALVE CONNECTOR AND DISCONNECT TPS SENSOR CONNECTOR. THEN REMOVE THROTTLE BODY ASSEMBLY. YOU NEED TO BUY NEW THROTTLE BODY COOLANT HOSES AND NEW THROTTLE BODY GASKET FOLLOW TOP COOLANT HOSE TO ENGINE BLOCK.NOW YOU SEE CAN AND REMOVE THE THERMOSTAT HOUSING REPLACE THE THERMOSTAT.BESURE TO HAVE EXTRA COOLANT ON HAND.BLEED COOLANT SYSTEM WHEN DONE.TO BLEED COOLANT SYSTEM REMOVE RADIATOR CAP ON OVERFLOW JUG.THEN OPEN BLEED SCREW ON THE WATER PUMP BYPASS HOSE PIPE JUST A LITTLE.POUR COOLANT IN THE OVERFLOW JUG UNTIL LEVEL STOP DROPPING.STOP AT COLD MARK ON JUG.CLOSE BLEEDER SCREW ON WATER PUMP BYPASS HOSE PIPE.CRANK VECHICLE CHECK FOR LEAKS. START UP ENGINE LET IDLE FEW MINUTES THEN CHECK COOLANT LEVEL ADD MORE UNTIL UNTIL LEVEL STOP DROPPING.PUT RADIATOR CAP BACK ON OVERFLOW RESERVOIR. LET ENGINE IDLE WATCH COOLANT TEMPERATURE GAUGE.WHEN GAUGE START CLIMBING. TURN OFF ENGINE WAIT FEW MINUTES TAKE A LARGE RAG OPEN RADIATOR JUST A LITTLE YOU HEAR HISS NOISE.WHEN PRESSURE STABILIZE DONT GET SCALDED BECAREFUL.OPEN CAP LITTLE MORE.IF COOLANT PRESSURE STILL BOILS OUT WAIT 20 MINUTES ADD MORE COOLANT TO RADIATOR OVER FLOW WHEN COOLANT LEVEL STOP DROPPING.PUT RADIATOR CAP BACK ON START VECHICLE UP LET IDLE UNTIL THERMOSTAT OPEN. THEN FEEL TOP RADIATOR HOSE FEELS HOT THERMOSTAT OPEN WATCH TEMPERATURE GAUGE.IF GAUGE TEMP START CLIMBING TURN OFF ENGINE WAIT A WHILE.CHECK AND ADD MORE COOLANT.WHEN THE ENGINE CAN IDLE TEMP GAUGE STOP CLIMBING YOU HAVE BLEED COOLANT SYSTEM.KEEP CHECK ON COOLANT LEVEL.

1988–91 Models

1. Disconnect the negative battery cable.
2. Properly drain the cooling system into a suitable container.
3. Disconnect the fan motor and motor connector.
4. Disconnect the upper and lower radiator hoses.
5. Disconnect and plug the automatic transaxle cooling lines at the radiator, if equipped.
6. Disconnect the coolant reservoir overflow hose.
7. Remove the radiator attaching bolts and brackets.
8. Remove the radiator with the cooling fan attached.
9. Remove the cooling fan and shroud from the radiator. NOTE: Check all cooling system hoses for any signs of damage, leaks or deterioration and replace if necessary. To install:
   
10. Attach the cooling fan and shroud to the radiator and install the assembly.
11. Attach the radiator bolts and brackets. Tighten the radiator bracket bolts to 7 ft. lbs. (10 Nm).
12. Connect the coolant reservoir overflow hose.
13. Connect the automatic transaxle cooling lines to the radiator, if equipped.
14. Connect the upper and lower radiator hoses.
15. Connect the fan motor and thermo-switch wire connector.
16. Refill the system with the proper type and quantity of coolant, check for leaks and bleed the cooling system.
17. Reconnect the negative battery cable. Fig. 7: Cooling system components — 1988–91 engines
    

1992–95 Models

1. Disconnect the negative battery cable.
2. Properly drain the cooling system into a suitable container.
3. Disconnect the fan motor and motor connector.
4. Disconnect the upper and lower radiator hoses.
5. Disconnect and plug the automatic transaxle cooling lines at the radiator, if equipped.
6. Disconnect the coolant reservoir overflow hose.
7. Remove the radiator attaching bolts and brackets.
8. Remove the radiator with the cooling fan attached.
9. Remove the cooling fan and shroud from the radiator. NOTE: Check all cooling system hoses for any signs of damage, leaks or deterioration and replace if necessary. To install:
   
10. Attach the cooling fan and shroud to the radiator and install the assembly.
11. Attach the radiator bolts and brackets. Tighten the radiator bracket bolts to 7 ft. lbs. (10 Nm).
12. Connect the coolant reservoir overflow hose.
13. Connect the automatic transaxle cooling lines to the radiator, if equipped.
14. Connect the upper and lower radiator hoses.
15. Connect the fan motor and thermo-switch wire connector.
16. Refill the system with the proper type and quantity of coolant, check for leaks and bleed the cooling system.
17. Reconnect the negative battery cable. Fig. 8: Cooling system components — 1992–95 engines
    

your radiator is probably bad small leak but itll do its deal of leak...