Popping on E-start

Tamas · Feb 21, 2014

Hi!

So my problem is that whenever I use the e-start on my bike it makes a bang just before it starts. Almost every time. Sometimes it is hardly noticeable and sometimes it makes a great bang like a fire cracker. It runs great otherwise.
What can this be?

Thx, Tom

Taffy · Feb 22, 2014

you're buring off unburnt fuel in the exhaust system. the big question then becomes why?

fuel valve too weak?
fuel tap doesn't seal?

wasted spark initially?

valve clearances? possibly your exhaust valve isn't sealing. 80% of the Husabergs I work on have tipped exhaust seats, only a fraction maybe but enough for it not to seal!

regards

Taffy

Tamas · Feb 22, 2014

I would believe it is not the tappet to blame since a while back I had a fully different engine on the bike and it was doing this exact same thing but the difference was that it wasnt making this loud bangs. The exhaust was different as well back then, it was the stock exhaust and maybe the fuel couldn't ignite as well as now with the gutted exhaust. Could it be that it is getting too much fuel? On both engines I used the same carb.

Cheers,Tom

Taffy · Feb 22, 2014

yes it could be that. that is why I said it.

(Fuel Valve...)

Taffy

Tamas · Feb 22, 2014

How can I fix that?

Taffy · Feb 22, 2014

buy a new one and fit it Tamas. it's not rocket science.

Taffy

Marcelhusa · Feb 22, 2014

Hi Guys,

fuel valve, i guess i am being stupid now, but do you mean with that, the inlet valve? or something completely different?

Regards, Marcel

Tamas · Feb 22, 2014

No mate, it is the valve in the carburetor which closes off fuel when the bowl is filled so it doesnt overflow. It is not the inlet valve.

Tom

Marcelhusa · Feb 22, 2014

Tamas said:
No mate, it is the valve in the carburetor which closes off fuel when the bowl is filled so it doesnt overflow. It is not the inlet valve.

Tom

As i said was already scared i would ask a stupid question....of course that is what it is :angry:

Tamas · Feb 23, 2014

There are no such things as stupid questions

Search

Search

Popping on E-start

Tamas

Taffy

Tamas

Taffy

Tamas

Taffy

Marcelhusa

Tamas

Marcelhusa

Tamas

Similar threads

Register CTA

Recent Discussions