Bangs like thunder

Hi folks,

I'm new here and I'm not totally convinced that my English is up to the problem. Nevertheless let's try.
The other day I was driving downhill towards an red traffic light when the lorry behind me stopped, the 2 lads got around it and were looking for something. They obviously didn't know that it wasn't their lorry but my SV who'd made this little noise- a fire cracker is nothing like it.
I've checked the plugs- OK. Ignition timing is not an issue any more??? Anyone got an idea?
Thanx.

Oehrwolf

Have you changed the exhaust?

Sounds cool! You're sure there's something wrong with it?

*Ahem, Sorry*

Well, this is the original exhaust and I'm not sure that there's something wrong- at least it runs like ever.
But think of the children and old ladies- it's like the German tanks are comin' in town.

Have you had a backfire?

I sometimes get a little backfire on my bike (a very quiet one). I think it's when the exhaust isn't fully warmed up and maybe I have had the choke on. And I have shut the throttle quickly after revving it highly.

I know from the past that If you rev a motorbike to high revs and kill the ignition, you will get a backfire, but this is bad for the exhaust.

Even on a little Honda C50 you can get a massive backfire which sounds like a shotgun going off.

I guess that backfire is what I'm talking about. But it's only when the wheel is moving the engine and the throttle is completely off. It first grumbles a bit and then I get this massive explosion-backfire. If I give her a bit of petrol it stops. So it's obvious that coming downhill in deccelaration is giving me the problem-OK I'm no kamikaze going always on full throttle. They would not encounter this sort of problem.

and I forgot one more thing: if I pull the clutch it's OK.

It sounds exactly like the bangs I get on the overrun., but I don't have the stock exhaust on my bike.
Did you have the bike from new? Are you sure it's the stock can? Has it just started doing it?

Originally Posted by Carsick

It sounds exactly like the bangs I get on the overrun., but I don't have the stock exhaust on my bike.
Did you have the bike from new? Are you sure it's the stock can? Has it just started doing it?

Yeah that's exactly when I get them.
My bike is a very low milage Curvy, and totally stock with the original suzuki exhaust. It doesn't concern me at all, I think it's just motorbike noises.

great in it