suzuki DF 115 surging

[chanice]

why does my 115 reach 3000 revs then keeps surging and will not go above 3000 no alarms sound and nothing on tacho monitor? any help appreciated!

 

[JRJ]

Re: suzuki DF 115 surging

I blamed it on a cold motor and or an empty fuel bulb. I can duplicate the surge by applying stationary throttle. (in neutral) Never happens if I let it warm up like I should.

 

[chanice]

Re: suzuki DF 115 surging

I blamed it on a cold motor and or an empty fuel bulb. I can duplicate the surge by applying stationary throttle. (in neutral) Never happens if I let it warm up like I should.

thanks but this was a continuous condition warm or cold no feul problem

 

[DanMcK]

Re: suzuki DF 115 surging

chanice: there is a lot of things that can cause surging. The one thing that sticks out is the 3000 rpm max. This can be caused by a failed neutral switch. If the neutral switch failed and is always on, engine speed is limited to 3000 rpm by intermittent fuel injection and ignition timing is fixed at BTDC 8 Degrees.

There are other causes but the max rpm @3000 points to the neutral switch.
You can check that with a meter. The procedure is a bit complicated. You would need a manual.

Dan