Vented my engine now running poorly

AlienBoy

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If anybody knows what might be the problem basically I had my 208cc engine on my chopper things were running great and smooth good power then decided to “vent the block” so I drilled in 2 hoses from side cover to valve cover and 1 hose in valve cover that has a check valve.

Since I did this, the engine performance had been weird, it doesn’t run great and once I get up into more speed like 40km+ it starts to cut out and looses power. I notice the hose fittings aren’t super tight cause they’re stripped a bit so there’s small air leaking out of the side cover hose fittings and valve cover fittings I think but I don’t see why that would be a problem? Anyways i’ll attach a photo.

Cheers
 

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