[Haydo6520]

Hi all,

I’m new to the forum so sorry for any errors, I have a 1998 Honda foreman 450. When the engine heats up and I apply full throttle it sometimes smothers itself only giving me 1/2 power. Sometimes if I let off the throttle it will come back right straight away. Sometimes it completely dies off and cuts out. The engine gets a lot quiter when this happens. It sounds as if something is getting blocked. Some of the time it runs fine even with full throttle when it’s warm.
I have cleaned out the fuel tank, ensured all lines were clear and I checked the carb to ensure no jets were blocked however the problem persists.

Where do I go from here?
Could the exhaust be getting blocked?

Thanks in advance for any help,
Conor

 

[toodeep]

The insides of muffler came loose and every now and then block the system. It's quite common on the older foremans with stock exhaust.

 

[450esMike]

Sounds like it could be the air filter or along those lines , i had made a snorkel and did the same symptoms until I got it right

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