Annoying 'Popping' Nose On Cold-Start

[Potato_In_Exhaust]

Whenever I cold-start my bike, there is a loud pop pop pop noise that I'm assuming is coming from my exhaust manifold pipe...... I've tightened it down to make sure it isn't leaking and I see no holes in it. My question is, what's causing the pop pop pop sound when starting the motor up? It's never done this before, perhaps I need to take off the exhaust cap at the end and clean the pipe? Is the pipe clogged and just needs to be cleaned internally?

 

[crassius]

I'd first check the head gasket.

 

[MotorBicycleRacing]

Whenever I cold-start my bike, there is a loud pop pop pop noise that I'm assuming is coming from my exhaust manifold pipe...... I've tightened it down to make sure it isn't leaking and I see no holes in it. My question is, what's causing the pop pop pop sound when starting the motor up? It's never done this before, perhaps I need to take off the exhaust cap at the end and clean the pipe? Is the pipe clogged and just needs to be cleaned internally?

Potato in exhaust?

 

[xseler]

Potato in exhaust?

Now that's funny, right there....!!

 

[crassius]

reminds me of being a kid back around '52 - we did that to a car and it blew out and shattered a huge plate glass window in a store it was parked in front of

 

[Venice Motor Bikes]

Potato in exhaust?