KTM 950 Misfiring or backfiring cause ????

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Rickus

Race Dog
Joined
Jan 16, 2009
Messages
1,670
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8
Location
Koës
Bike
KTM 950 Adventure S
I did a short round trip to Augrabies yesterday 240km. The bike is on 13000km now and according to the manual the spark plugs must only be changed at 15k km.
When I start opening it up a bit ...... 170km/h + after a short period the bike jurks and gives a loud backfire.......it then goes on again as if nothing is wrong.....after a while it will do this again.
When I do normal speeds 130km/h to 150km/h it does not do it.

Can it be that the spark plugs needs changing?
Or is this fuel pump symptoms ? "I have bought a Facet 40171, but have yet to fit it."
 
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