Ducati Sporting Club UK > Model Specific - Discussion, Technical Problems and Help > Supersports: SS / SuperSport / Supersport 950 > Backfire & poor running

[crash]

Originally posted by FiscusFish
Carb Icing.

Felt like it wanted to cut out or a spark plug had gone bad? Fairly nippy out but not freezing and a bit dampish? Bike felt OK with throttle wide open?

Slkoline Pro FST or other such stuff.

Darren

Yep - that pretty much describes it. I know I have suffered carb-icing before, but never back-fires.

What is Silkolene Pro FST ? An octane booster ?

I always use super-unleaded anyway (Shell Optimax)

Thanks to all for your advice.

Cheers
Dave.

[Mad Dog Bianchi]

Well, if you have eliminated the breather hose (do you use a tank bag that may slide forward and bend the hose at low speeds) and the carb icing problem, I would check the carb fittings. See if they are on nice and snug, with no air leaks around the mountings. I had similar problems and tightening up the mounts cleared them up.
93 750SS

[crash]

Originally posted by FiscusFish
Carb Icing.

Felt like it wanted to cut out or a spark plug had gone bad? Fairly nippy out but not freezing and a bit dampish? Bike felt OK with throttle wide open?

Slkoline Pro FST or other such stuff.

Darren

Darren - tried Silkolene Pro FST - works a treat

Thanks for the advice mate.

Cheers
Dave

[Iconic944ss]

Some good guys on here eh?

As an aside - I was surprised how much water was in my tank and and float bowls when last drained.

Happy riding - Frank

[crash]

Originally posted by Iconic944ss
Some good guys on here eh?

As an aside - I was surprised how much water was in my tank and and float bowls when last drained.

Happy riding - Frank

Frank, how did you discover this, and how did you drain it?

I know how to do this for a diesel engine () but never imagined it to be a problem on a bike.

Cheers
Dave.

[Iconic944ss]

Two seperate occasions Dave....

Drained the Carbs the first winter I had the bike (there are drain screws on the float bowls and I ran hoses off them to collect the dregs).

and....last month I drained the tank to inspect for corrosion that I had seen previously.....I reckon there was about 50mls of water came out - surprised me.

Frank

[ali]

Originally posted by crash
Help.

Rode to the Ally Pally show today, and my 1993 900ss (carb model obviously) was backfiring all over the place (on the over-run, and also on a neutral throttle at low revs).

I have never suffered this problem before. Also, low speed running is very rough, and she will barely tick-over at idle. Every time I stop at lights and pull the clutch in - it stalls.

Anyone got any clues please?

Funnily enough these are the exact symptoms my 600ss was showing last week. Finally traced it to a knackered coil on the back cylinder. Pinched one off my 900 and all's well (until the 900 finds out!).

Think I'll get some FST in just in case!

Ali

[fil2]

Originally posted by ali

Funnily enough these are the exact symptoms my 600ss was showing last week. Finally traced it to a knackered coil on the back cylinder. Pinched one off my 900 and all's well (until the 900 finds out!).

Think I'll get some FST in just in case!

Ali

exactly what i have a litre of at home now for just such an occasion.