[NZ z650]

Hi

When riding home yesterday I was coasting downhill at about 4000rpm. Pressure seemed to build in the exhaust to the point when the engine backfired and the bike "bucked". A little bit stronger and it might have been enough to throw me off.

Any ideas? It has about 1250kms (800 miles on it) is about 8 months old and only used for commutes.

Cheers
NZ z650

 

[NZ z650]

So, this morning I was coasting downhill in fourth at about 4,000rpm. I pull in the clutch and BANG! Big backfire.

Any ideas or is this forum dead?

Churs

 

[czrlaker]

Get it checked out for sure it should be covered through warranty. It could be anything from spark plug/wire, throttle body or bad sensor, fuel maybe? not sure how long it takes for fuel to become bad or if there is a difference in longevity with winter/reg fuel. The only time I ever had that was when I was running straight pipes with the Danmoto exhaust. And even then it never bucked. When you get it diagnosed please post so there is a record on the forum.

I will check my service manual for any diagnosis help or maybe a more seasoned forum member can answer. @Tremonte