Phazer afterbang

[Haudy991]

I recently bought a 2007 Phazer, when I am hard on the throttle then hard on the brakes the thing gives off a very loud after bang. I even tried rallying the throttle slightly when i let off which helps a little but does not cure the problem. The sled has all the updates and recalls done already and I put new plugs in a few weeks ago. Has anyone else had this issue and if so how did you fix it?

 

[RedPhazer]

What do you mean by 'after bang'? Is it backfiring? If so, is is most likely an exhaust leak.

 

[yamahas]

is it the same noise you hear when you change from drive to reverse?

 

[woolyviper]

when you slam on the brakes, you trap the belt in the secondary - when you let off the secondary snaps shut. Stop slamming on the brakes, you're gonna end upside down or on your side somewhere - just pinning the throttle and letting off will give you some track slide to make it squirrely.

 

[phaze5]

yea your hard on your brakes

 

[yamahas]

agree with the other posts, i Barely ever even use the brakes cause theirs soo much engine breaking

 

[Haudy991]

Okay but even without the brakes it does it. I can be hard on the throttle and let off with the same results. Unless you're puttering around like a grandpa (no offense to grandpas) it afterbangs at almost all throttle positions.

It is not a backfire, a backfire is combustion back through the intake system. After bang is an ignition in the exhaust system usually caused by build up of raw fuel or fumes in the muffler.

 

[cannondale27]

Check your exhaust for leaks starting at the Manifolds,Doughnuts back.

 

[Haudy991]

...best comparison for any 4 stroke motocross riders is on deceleration it is like your fuel screw is turned to far in. If that helps?

 

[fraolib]

yea it just pops its gonna be an exhaust leak

 

[Haudy991]

Excellent! Thank you! I will look there first. Lets hope for some more snow!

 

[Tayz588]

Mine shoots flames out the exhaust..and pops..but thats probably because i have dual glasspacks, oh well.

 

[Haudy991]

I found that the exhaust was completely broken off at the flex pipe. It would have required me to buy a new exhaust system, so for the time being I was able to add a ring and weld it back together. I'd like to install a Aaen exhaust in the future but still doing a little homework on it.