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Discussion Starter · #1 ·

I've got a problem with my '07 450 EXC. I've just stripped/rebuilt it and I think I've missed a connection to the carb. The bike turns over lovely with a big spark. Plenty of compression. Fuel is reaching the carb, but not being drawn through into the cylinder. Looking at the repair manual (for an '08 model) I think there's meant to be a connection from the 'engine vent hose' to the carb, but it's not clear in the picture where this comes from/goes to.

Could this be the cause of my vacuum problem and can anyone give me a decent pic/diagram of where this is?

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