Engine problem

[SebaManiac]

Hi guys I need help with my bike. Last week my bike start to behave suspicious.

Little bit louder

Alot of shots from exhaust when rev from over 4k rpm

When going faster than 40mph every time I leave throttle and start accelerate again it losses power for 1sek maybe half, it feels like no fuel delivery or too much fuel.

Anyone got idea what might happened? I will check engine compression soon.

Carb mixture is adjusted properly, valves as well. Also i will say that speed is normal and power is same as before. There is no problem with starting it starts first time but after longer run idle goes low below 1k rpm.

[eastanglianbiker]

have you checked condition of air filter and made sure the exhaust hasnt got any holes or cracks in it?

[SebaManiac]

Exhaust is fine, but air filter hmm. This engine behavior comes up when i had sport air filter on, now i put standard one. You thing that sport (cheap) air filter might cause this by bad filtration?

[Tango]

Exhaust is fine, but air filter hmm. This engine behavior comes up when i had sport air filter on, now i put standard one. You thing that sport (cheap) air filter might cause this by bad filtration?

So.....this is happening after you have put the original air filter back on?......or is it OK with the original filter on?

[SebaManiac]

no this happened when sport filter was on i put original back to check if something will change but engine behaviour same bad as with sport filter on.

[oslin06]

You have not got water in the tank have you ?

Keith