DN-01 running on one cylinder

Carl

New member
When I bought the bike some 2 weeks ago it would run just fine. Then some days later, I noticedd occasional misfiring of one cylinder when idling. Recently I took the bike out for a trip, and it ran on one cilinder most of the time. When you rev it up it suddenly starts to fire both cylinders. And now it stops at idle speed (it reverts to single cylinder mode then ;-)), and it is very difficult to start it. The bike has been standing still for a long period of time I guess. I replaced the battery, and checked the (original) sparkplugs for wear. I added a cleaniing additive with the fuel - but that didn't solve anything. Does anybody have a clue? Currently there is about 9000 miles on the tacho.
 

Knob

New member
Site Suporter
I generally dislike to repair bikes by the Internet, but: first thing CHANGE the both spark plugs to new ones. Right plugs are NGK SIMR8A9.
And change the plug caps, those are known on DN to be often faulty. You can use NGK VD01F model of spark plug cap, it has less resistance in it and this is a good thing about making spark. And is cheaper than OEM.
Also check HT wires coming from ignition coil are not loose.
If this will not help, then in case of FI problems better get help from some known good repair shop. Without special tools you can not fix the FI issues at home.
 

Gizmo

Member
Site Suporter
I generally dislike to repair bikes by the Internet, but: first thing CHANGE the both spark plugs to new ones. Right plugs are NGK SIMR8A9.
And change the plug caps, those are known on DN to be often faulty. You can use NGK VD01F model of spark plug cap, it has less resistance in it and this is a good thing about making spark. And is cheaper than OEM.
Also check HT wires coming from ignition coil are not loose.
If this will not help, then in case of FI problems better get help from some known good repair shop. Without special tools you can not fix the FI issues at home.
As Knob said, the caps have been a BIG problem area for quite a few riders. Just follow what Knob has said to do and you should find/fix your problem!
 


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