jessieherrera
02-10-2012, 02:52 AM
Hello,
If its liquid cooled make sure that the fluid levels are up. Make sure that the radiator cap is good and that the fan and water pump are functioning properly (the fan is easy to check as it is either spinning or not unless it is temperature switch controlled whereas it will only come on when the radiator needs cooling)
If the water pump is not leaking then it's good.
Check you hoses for kinks or restrictions.
A common and overlooked problem is a faulty thermostat. If it's stuck closed or not fully opening when needed then you will get the overheating problem, they easy to replace. Just don't over tighten the housing.
If it's air cooled then you may have too hot of a spark plug, vacuum leak, a lean carb mixture, or just riding it too hard, whereas. This may require richer jetting.
Your timing may be either too far advanced or not advancing at all. Check with a timing light. Your mechanical advance (if so equipped) may be stuck or broken or your flywheel may have shifted though neither of these are likely, but possible.
On your flywheel there should be several marks, one should be TDC or your cam alignment mark. This one puts your piston at TDC and is used for cam reference.
The next should be your "static" or initial timing mark. This one is used to set you basic timing. Timing can vary depending on your vehicle. They usually range from 2 degrees ATDC to 14 degrees BTDC.
The last one should be your total advance mark. This one is usually around 35 degrees and can be checked with a timing light above 1500 RPM. Your total advance is where your top end power is created. You can advance it until your best power is achieved. If advanced too far it can cause pinging "predetonation" which can destroy your engine. If you advance a large amount for racing or hauling power use a higher grade fuel or a water injection system.
Good luck.:)
If its liquid cooled make sure that the fluid levels are up. Make sure that the radiator cap is good and that the fan and water pump are functioning properly (the fan is easy to check as it is either spinning or not unless it is temperature switch controlled whereas it will only come on when the radiator needs cooling)
If the water pump is not leaking then it's good.
Check you hoses for kinks or restrictions.
A common and overlooked problem is a faulty thermostat. If it's stuck closed or not fully opening when needed then you will get the overheating problem, they easy to replace. Just don't over tighten the housing.
If it's air cooled then you may have too hot of a spark plug, vacuum leak, a lean carb mixture, or just riding it too hard, whereas. This may require richer jetting.
Your timing may be either too far advanced or not advancing at all. Check with a timing light. Your mechanical advance (if so equipped) may be stuck or broken or your flywheel may have shifted though neither of these are likely, but possible.
On your flywheel there should be several marks, one should be TDC or your cam alignment mark. This one puts your piston at TDC and is used for cam reference.
The next should be your "static" or initial timing mark. This one is used to set you basic timing. Timing can vary depending on your vehicle. They usually range from 2 degrees ATDC to 14 degrees BTDC.
The last one should be your total advance mark. This one is usually around 35 degrees and can be checked with a timing light above 1500 RPM. Your total advance is where your top end power is created. You can advance it until your best power is achieved. If advanced too far it can cause pinging "predetonation" which can destroy your engine. If you advance a large amount for racing or hauling power use a higher grade fuel or a water injection system.
Good luck.:)