Backfiregreenspun.com : LUSENET : MV Agusta F4 : One Thread
Anybody ever have their F4 engines backfire on them? If so, is there a reason for this? Only happened once but once is enough. Any worry about damage or anything? Rode the bike twice since then and all seems fine.
-- John Peters (firstname.lastname@example.org), November 03, 2003
no need to worry. your bike is running rich, which is way better than lean. get it checked at the next service interval.
-- mod (email@example.com), November 04, 2003.
I actually have had mine backfire a few times. In fact, it had a huge backfire during a ride the other day. I think mine is due to the fact that the mid-pipe slightly cracked and I have an exhaust leak.
-- Pete (firstname.lastname@example.org), November 03, 2003.
Don't worry at all! my EVO3 used to do Backfiring due to rich running, after the 6000 Km. check i made my Mech adjust the carburation & Co2 emission, now everything runs smooth.
I noticed that usually new MV comes from the factory in too rich running condition, you're the 7Th person i hear (including me) that had this problem, i just wonder why this happens so often.
-- Paolo (email@example.com), November 06, 2003.