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someone allready posted a thread saying that there cylinder head was hissing but my exhaust is hissing and not puffing strong smoke a bit of smoke comes out but not as strong as it should you can hardly feel it
anyway i took the exhaust off cleaned it also cleaned the exhaust port and then tried to ride it
i was looking well stupid because i was only doing 15mph down the road it wouldnt go any faster the exhaust still wasnt puffing right just hissing out do you think this could be because i need a new cylinder head

if i pour some petrol down my exhaust and set it on fire will it burn all the carbon in there i have been told to do this but wont it ruin the exhaust

jordysean wrote:if i pour some petrol down my exhaust and set it on fire will it burn all the carbon in there i have been told to do this but wont it ruin the exhaust

Don't forget the fire extinguisher...

When was the last time you checked your valve clearances?

If your exhaust valves aren't adjusted to spec, you may be getting a lack of exhaust flow out of the combustion chamber and your power is going to suffer.

Gonna give us any clues as to what kind of bike this?

And as Gajet wondered, has the bike had any mainance done to it? Recently or ever?