Exhaust pressure - 2017+ Kawasaki Z650 Forum
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post #1 of 3 (permalink) Old 05-13-2019, 10:03 PM Thread Starter
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Exhaust pressure


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.

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post #2 of 3 (permalink) Old 06-03-2019, 05:15 PM Thread Starter
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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?

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post #3 of 3 (permalink) Old 06-03-2019, 07:01 PM
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Location: El Centro, CA
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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


Last edited by czrlaker; 06-03-2019 at 07:07 PM.
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