Honda CBR 250R Idle speed jumping

[Westy_mate]

So i noticed that when the choke is on the 4th cylinder is either not firing at all or not all the time.
Just wondering if that is normal? once the choke is off its running fine i believe they are all firing although the Idle problem is still there.

[Westy_mate]

So i noticed that when the choke is on the 4th cylinder is either not firing at all or not all the time.
Just wondering if that is normal? once the choke is off its running fine i believe they are all firing although the Idle problem is still there.

[Westy_mate]

excuse my double post

[Westy_mate]

I know this because the Exhaust header is only cold/warmish

[p.dath]

So i noticed that when the choke is on the 4th cylinder is either not firing at all or not all the time.
Just wondering if that is normal? once the choke is off its running fine i believe they are all firing although the Idle problem is still there.

All four cylinders should be firing all the time, weather the choke is on or not.

[CookMySock]

All four cylinders should be firing all the time, weather the choke is on or not.

In order, check carb balance,shit in the enrichener jet, hole in enrichener diaphragm, carb clean, compression test.

Steve

[onearmedbandit]

In order, check carb balance,shit in the enrichener jet, hole in enrichener diaphragm, carb clean, compression test.

Steve

I don't think taking a dump in the enrichener jet will help.

[Westy_mate]

plan is to get my carbs cleaned and balanced on sat but i was hoping i could figure this out myself. how would i complete a compression test? or check the the enrichener jet and enrichener diaphragm? once the tank is off where in regards to the carbs are these things? damn carbs take up all the room ha

[CookMySock]

Google images search, keywords - tubing manometer carb balance

Youtube search, keywords - carb balance

Steve

[Westy_mate]

I want to check for air leaks, any idea where to start? fuel lines?

[Westy_mate]

I noticed that when i lowered the Idle to 1800-2000rpm the idle fluctuation was very small compared to when it was idling at 3000rpm. Mean anything?

[CookMySock]

To check for air leaks, warm the bike up, idle it, and gently push the carbs and hoses sideways a bit and see if the revs change.

Steve

[Westy_mate]

Any idea why the 4th Exhaust header only gets warm when the choke is on whilst the others get hot? once i take the choke off it heats up to the other exhaust temps.

[CookMySock]

In order, check carb balance,shit in the enrichener jet, hole in enrichener diaphragm, carb clean, compression test.


Steve

[Gibbo89]

I don't think taking a dump in the enrichener jet will help.

might be worth a go? if DB drops a deuce in his hyosung then it must be good for the bike.

only kiddin BD.

hope your CBR comes right Westy. looks like your gettin some sound advice, put please dont poop in your bike, you'll be spraying stuff all over the road.