My bike stutters at full throttle

If your 2002 Honda VTX 1800 loses power to the wheels when it gets hot, it could be due to several potential issues. Here are a few possible causes to consider:

1. Overheating: Check the cooling system of your motorcycle, including the coolant level, radiator, and cooling fan. If the engine is overheating, it can lead to loss of power. Ensure that the cooling system is functioning properly and that there are no blockages or leaks.
2. Fuel delivery issues: When the engine gets hot, fuel delivery problems can occur. Check the fuel system components, including the fuel pump, fuel filter, and carburetors (if applicable). Make sure they are clean, free from clogs, and functioning correctly. If necessary, clean or replace these components.
3. Ignition system problems: Heat can affect the ignition system, leading to weak spark or misfiring. Inspect the ignition coils, spark plugs, and spark plug wires. Ensure they are in good condition and properly connected. Replace any worn-out or damaged components as needed.
4. Exhaust system obstruction: A partially blocked or restricted exhaust system can cause a loss of power when the engine gets hot. Inspect the exhaust pipes, mufflers, and catalytic converter (if equipped). Look for any obstructions, such as debris or carbon buildup, and clean or remove them.
5. Clutch issues: If the clutch is not engaging properly when the engine is hot, it can result in a loss of power to the wheels. Check the clutch assembly, including the clutch plates, springs, and cable (if applicable). Ensure that the clutch is adjusted correctly and operating smoothly.
6. Electrical problems: Heat can affect electrical components, leading to intermittent power loss. Inspect the wiring harness, connectors, and electrical connections. Look for loose or corroded connections, damaged wires, or faulty components. Repair or replace any problematic electrical parts.
7. Engine performance issues: If none of the above issues are present, it's possible that there could be internal engine problems causing the loss of power. In this case, it's recommended to consult a qualified motorcycle mechanic or Honda dealer for a more thorough diagnosis and inspection.

Remember to follow proper safety precautions and consult the service manual for your specific motorcycle model during the troubleshooting process. If you're not confident in diagnosing or fixing the issue yourself, it's best to seek professional assistance to ensure a proper and accurate resolution.

try putting in octane 98 for one tank .put it in from about half full .follow up with one more to full

Had similar problem with Honda 100HD, turned out to be carburettor float set too low causing fuel starvation on high revs

sound like you just running low on fuel you probably dont have a problem at all don't let you fuel level run so low if it does that turn your fuel petcock to reserve and head for the nearest gas station.

Goto a bigger set of jets untill you find a set the cures the bog up.
The recommended jets are only a starting point.

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Electrical ... check points. You jmight want to run some carb cleaner through it ... change the plugs. Id look at the points or what ever turns the coil on and off, real close.

Its seems the the gas is not entering the carburator.
Sometimes if theres water in the gas (since you had filled her up ) one experiences same symptons.
Best would be to clean the carburator but first check the petc o c k if it is allowing full flow of the gas to the carb.

could be fuel delivery problem. change fuel filter, flush fuel lines.