after carb clean balance all cyclinders are hot now for the rest of the bike

[psyfi_1]

hi guys just need some advice

my 3-4 cylinder is not getting as hot as 1 and 2

i turn the bike on and let it sit for a few minutes and through some water over the pipes and definitely 3 and 4 are not as hot

can you guys give me a list of things i could do to see what the problem is

and i will start going through them to find out what is wrong cheers

i am quite good with my hands so i will give most things a go cheers

[daviee]

balance the carbs if it only does  it at idle then more than likely that

[Disorderlypunk]

certainly sounds like a balancing or idle fuel screw area to be looking at
as davie says start with balancing as idle fuel screws dont tend to change as much

[darrsi]

I bought some new CR8E NGK plugs recently, one pegged out at 8 weeks, then another one or more at 10 weeks.
Noticed at first that pipe #4 wasn't hot, plus the bike was running horribly, but when i changed that plug for an old one it ran okay again for a couple of weeks, then it happened again so put all my old plugs back in and it all ran fine again.
Bought new Iridium plugs on Monday and now everything is as it should be.
Not really ever had plug trouble before in years of riding but that's what mine turned out to be so worth a thought. 

[Bretty]

If the bike spends much time outside on the side stand, cylinders 3 and 4 will be most exposed to the elements, sat in water and likely corroded. I'd personally start by checking the plug caps, changing the spark plugs and giving the whole area (and plug caps) a good clean and blast with wd-40.

[Trebus]

http://www.ngk-sparkplugs.jp/english/tec...index.html

Most likely fakes. I posted this link a while back on how to spot them.

[psyfi_1]

okay so i change plugs with some old ones i had left over Not any better also swapped coils 2-3 over no diference whats next to check................................. did check the carb floats bowls and drained loads of crap from bowl 3 but four was okay......

[BBROWN1664]

okay so i change plugs with some old ones i had left over Not any better also swapped coils 2-3 over no diference whats next to check................................. did check the carb floats bowls and drained loads of crap from bowl 3 but four was okay......

There is only one coil that supplies #2 & #3. I assume you mean you switched the plug leads around. If the problem is still there having done that the problem is fuel related.

So you have drained the float bowls but have you taken the carbs out and cleaned the jets?

My money is on a blocked jet now.

[psyfi_1]

okay so i have tested coils and they are sparking on cylinders 3-4 so do i have to pull the carbs out and clean the jets??/

[reaper1064]

Wouldn't hurt to do it mate, having mine stripped and cleaned tomorrow as I was having the same issue on number 4.

[Bretty]

for all you guys getting your carbs stripped, share pictures of what they find in there!!

I've never seen a blocked carb and would be interested to know what it looks like and the sort of thing you find.

[reaper1064]

Here is one of my float bowls. 

[psyfi_1]

okay so cleaned the carbs i will get them back on tommorow so hopefully i might have all cylinders again....... the float bowls where  full of rust...... so we will see if it gets any better......

[Bretty]

Wow, surprised to hear that. Check your fuel filter and air filter! That rust must have got past one of them.
A new fuel filter is only a couple of quid and should stop the rust getting through from you tank.

[Disorderlypunk]

if it is 'rust' that has made it through to your float bowls then it is worth the few quid for a new filter as old ones can tear (although rare 'poet')
if they looked like [size=78%]http://www.xjrider.com/viewtopic.php?t=668[/size]
then it isnt rust but you dont want it in there eitherway

[Disorderlypunk]

for all you guys getting your carbs stripped, share pictures of what they find in there!!

I've never seen a blocked carb and would be interested to know what it looks like and the sort of thing you find.

main thing you want to be looking at is your jets and emulsion tubes
have a little piece of wire to hand and make sure all the holes are clear - with small jets i tend to just put them in a tub of carb cleaner while doing everything else then blow through them (a can of compresser air for cleaning computers is great if you dont have a compressor)

[Bretty]

My favourite one is the 'jet' which has a taper inside but no hole. Alot of people (myself included) spend ages trying to unblock that one before eventually realising it isn't a through hole.

I've stripped my carbs twice before. Both times they were spotless inside?! My bike has lived outside for the last 8yrs, usually left sat for 2-3 months at a time. I don't know why they've never been a problem for me?

[His Dudeness]

If you've got rust in the carbs water is probably getting into the tank. You should clean out the drain tube under the filler cap and make sure it hasn't rusted through. The pipe on the inside of the tank can rust through and let water in. Also rinse out the tank with fresh fuel and put a new fuel filter in.

[psyfi_1]

okay so any ive put the carb back on but cant seem to ge the throttle cable back on ?? any suggestions...... i have changed fuel filter with new one now air filter doesnt look that bad..... but i will order a new set for it a couple of the jets did have crap in them.... but in the end i think i need to put new seals on everything they are shot basicly.....

[red98]

Sorry psyfi... :\  you need to connect the cables and than fit the carbs    :'(