Carb icing?

Is there anything i should be doing to the carbs on my curvey to prevent them iceing up now the winter cold has set in?
Over the last few days when i start the bike it seems to run on one cylinder for 3-5 secs before the other kicks in?
It only seems to be doing this since the cold weather set in?

wynn's dry fuel or that silkolene stuff or chop the bike in for summat with fuel injection

[andrewsmith]

Silkolene Pro FST Chris.

Which cylinder seems not to be firing?

That's not carb icing. You'll usually find the carbs ice after a little while when riding, especially on frosty mornings. It happens due to "latent heat of evapouration (or vapourisation)". Oh! Get me! Thats a technical way of saying that as the liquid fuel vapourises in the carbs, it draws heat in from the environment which cools the surrounding metal, leading to icing.

Curvy carbs have heaters in them to prevent this happening but they can be overwhelmed as has been mentioned on the forum.

The stutter you have on start up is just the bike coming on song. A squirt of WD40 on all of the wiring, should work wonders along with making sure your carbs are balanced, plugs are good, your choke cable isn't sticking and all the other usual winter checks. For the first couple of seconds its just sorting itself out and getting warmed up. If it gets worse, it might be worth clearing the pilot jets out in the carbs too. But again, as long as its not longer than a couple of seconds, I wouldn't worry.

C

[QUOTE=Berlin;2421000]That's not carb icing. You'll usually find the carbs ice after a little while when riding, especially on frosty mornings. It happens due to "latent heat of evapouration (or vapourisation)". Oh! Get me! Thats a technical way of saying that as the liquid fuel vapourises in the carbs, it draws heat in from the environment which cools the surrounding metal, leading to icing.

Curvy carbs have heaters in them to prevent this happening but they can be overwhelmed as has been mentioned on the forum.

The stutter you have on start up is just the bike coming on song. A squirt of WD40 on all of the wiring, should work wonders along with making sure your carbs are balanced, plugs are good, your choke cable isn't sticking and all the other usual winter checks. For the first couple of seconds its just sorting itself out and getting warmed up. If it gets worse, it might be worth clearing the pilot jets out in the carbs too. But again, as long as its not longer than a couple of seconds, I wouldn't worry.

Righto, cheers pal, i did notice the choke cable has gotton quite stiff. Is it a pain to lube? I will give all the wiring a good coating in wd40 aswell.




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[yorkie_chris]

It is easy to lube, get nozzle of some spray grease into splitter box which is on RHS of front carb. Also inside switch gear where cam is... it will work its way down the cable after a while.

You can buy isopropanol on eBay, cheaper than pro FST. 100ml per 10l of fuel is enough to sort it.

Originally Posted by Berlin

That's not carb icing. You'll usually find the carbs ice after a little while when riding, especially on frosty mornings. It happens due to "latent heat of evapouration (or vapourisation)". Oh! Get me! Thats a technical way of saying that as the liquid fuel vapourises in the carbs, it draws heat in from the environment which cools the surrounding metal, leading to icing.

Curvy carbs have heaters in them to prevent this happening but they can be overwhelmed as has been mentioned on the forum.

The stutter you have on start up is just the bike coming on song. A squirt of WD40 on all of the wiring, should work wonders along with making sure your carbs are balanced, plugs are good, your choke cable isn't sticking and all the other usual winter checks. For the first couple of seconds its just sorting itself out and getting warmed up. If it gets worse, it might be worth clearing the pilot jets out in the carbs too. But again, as long as its not longer than a couple of seconds, I wouldn't worry.

C

Cheers pal, i did notice the choke cable was a bit stiff. Is it a hassle to lube?
I will give the wiring a good coat of wd40 aswell.

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[keith_d]

Originally Posted by bigchris

Is there anything i should be doing to the carbs on my curvey to prevent them iceing up now the winter cold has set in?....

Buy a pointy??

Originally Posted by keith_d

Buy a pointy??

. . . . .

What, so you can have one of the 27 sensors pack up when the salt gets into them?

C