Checking the carbs

I need to finf out why my race bike, was misfiring and working properly at Silverstone last week.

Can any offer help or advice on what I need to do? I don't have much experince with fixing bikes at all. I'm not sure where to start, but I need to get my bike fixed asap.

Can anyone help with this, or let me know what I need to do? What to look for, what I need to be careful off?

The bike was misfiring onl;y running of one cylinder I think it was the front cylinder that was misfring, it did improve through the day. Though this all needs checking before going on track again. I would rather sooner the better.

I need to finf out why my race bike, was misfiring and working properly at Silverstone last week.

Can any offer help or advice on what I need to do? I don't have much experince with fixing bikes at all. I'm not sure where to start, but I need to get my bike fixed asap.

Can anyone help with this, or let me know what I need to do? What to look for, what I need to be careful off?

The bike was misfiring onl;y running of one cylinder I think it was the front cylinder that was misfring, it did improve through the day. Though this all needs checking before going on track again. I would rather sooner the better.

Sounds to me like some new plugs would be a good starting point. It's worth changing the coolant while your at it because you need to move the rad to get at the front plug. You can sometimes move the rad forward enough to get a spanner in there, but one slip could destroy the rad, so I prefer to drop the coolant and get the rad completely out the way.
also make sure you use a locking socket on the plugs, a normal one can come off and be a pig to retrieve.
If it was wet when you went out, the problem could be electrical. I clean of the electrics with Wd40 and a rag, then give them a good coat of damp start from time to time, and mines always been fine in the wet.

Nope changed the plugs at the track, wasn't wet but it still didn't seem to run right. I just need to check it over, but I'm not sure what I'm looking for how to how look for anymore potential problems.

[yorkie_chris]

Just pull them off and clean the float chambers out, also might be an idea to blow out the fuel pipes and the filter screen.

could be down to stale fuel then. Fuel these days only lasts a short time before it turns to treacle. If you're bike hadn't been used for a long time the carbs are probably full of crud.

Originally Posted by yorkie_chris

Just pull them off and clean the float chambers out, also might be an idea to blow out the fuel pipes and the filter screen.

How do I do this? I take it is quite easy? Can anyone explain how this is done please

[yorkie_chris]

You may want an impact driver for this.


Right....

Seat off, tank up, fairings off, airbox off, remove idle adjuster from mountings, remove jubilee clips holding the carbs to the engine, unplug TPS and carb heat connectors, remove fuel pipes, pull carbs off boots, remove choke plungers.

Then you can get the carbs off, put some rags down the inlets to keep any crap out of the engine.

Then remove the back of the carbs and give everything a clean out.

When you put it back together grease up the choke cables, blow out the air filter etc.

What do you clean them out with? I know this may seem silly to others but I never done anything like this before. Is there anything I can break or make a mess of here?

Get hold of some carb cleaner for giving them a good clean up, shouldn't be too pricey from your local Halfords or somewhere similar.

You probably want a nice long screwdriver for loosening airbox screws and carb screws as it makes it a hell of a sight easier. Also makes it less likely to nacker the screw heads up.

Be careful with the carb heater connectors also, they seem quite easy to break (I've broke a couple) and they aren't cheap.