Running on 3 cylinders

[blackdog]

No you got it wrong,

I used to ride a 250 Hyosung.

But I don't have to be used to it cos people realise that what people think doesn't make any difference to what I ride, cos I don't ride what other people want me to ride... I ride bikes cos I want to.

boy you swallowed that like a snapper

[Taz]

You'd be wrong son, she ticks over on three like the little trooper it is.

That's something that wont last long - an MVX running let alone running on 3 cylinders

I hear they got voted as the worst 2 stroke ever made.

[Hiflyer]

boy you swallowed that like a snapper

yah I know. Like you were fishing for a troll/rep I was fishing for people that actually saw me seriously/rep.

Don't hate the player hate the game

[Taz]

I ride bikes cos I want to.

You go Girlfriend!!!

[White trash]

That's something that wont last long - an MVX running let alone running on 3 cylinders

I hear they got voted as the worst 2 stroke ever made.

Nope. A lowly eighth in the 10 worst bikes list in Motorcycle Trader and News which dissapointed me somewhat, I expected at least top three.

[Hiflyer]

What sort of damage can be caused by this anyway?

Don't know what the reason was cos it fixed itself for a bit then died....

[Flip]

Mine started to run on 3 the other day. It really had me confused.

It has already been said here, stale gas. All the small volatile petrol molecules have evaporated from the fuel in the carbs and the stuff that is left does not have enough voom to be ignited by the spark plug. If the fuel in the tank is old you won't be able to get the bike to run properly. It won't hurt the bike, it might foul the plug on the cylinder that was not running.

Put some fresh gas in the tank. Turn the gas off and drain the float bowls. If there is no gas in the bowl give the needle valve might be stuck, so give the carb a little tap with the handle of screw driver. Turn the gas on and try starting the bike.

Check this out, good old school advice: http://www.dansmc.com/troubleshooting2.htm

[CookMySock]

run the bike for 2 minutes, turn it off and with a wet finger briefly touch the headers.

You can achieve a similar result by starting a cold engine and immediately touching the headers as they warm. Generally you will get between 20-60 seconds to do the test before they get too hot to touch - depends on the bike.

[Latte]

Even better just wait till it's warmed up and splash a few drops of water on each header and see which ones evaporate, no burnt fingers that way.

[Hiflyer]

Even better just wait till it's warmed up and splash a few drops of water on each header and see which ones evaporate, no burnt fingers that way.

that's if it'll start I'll be charging up the batt tonight, which is located under the fricken tank so is a mission to get to compared to just lifting the seat.

But I'll take that opportunity to check all the leads and the plugs as well, anything else I should probably check before I start the bike?

Keeping in mind It was running on three, fixed itself, then ran on 3 again, then died

[Latte]

If it has 4 carbs then you could try a spray of "start ya bastard" or similar down the "dead" cylinder's carb to see if it makes a difference, if the jets are blocked this should get it to fire up briefly.

As others have stated if it's got a single carb then this aint the issue. You'll need to temporarily remove the air box (unless you can get to the carb mouths through the airbox, then just remove the air filter).

Do that after you've done all the plugs/leads etc.

Air/Spark/Fuel - cross each one off.

[onearmedbandit]

And compression.

[Hiflyer]

If it has 4 carbs then you could try a spray of "start ya bastard" or similar down the "dead" cylinder's carb to see if it makes a difference, if the jets are blocked this should get it to fire up briefly.

As others have stated if it's got a single carb then this aint the issue. You'll need to temporarily remove the air box (unless you can get to the carb mouths through the airbox, then just remove the air filter).

Do that after you've done all the plugs/leads etc.

Air/Spark/Fuel - cross each one off.

Will do and yup four carbs.

If the jets are dead it'll fire up then die yea?

[Latte]

And compression.

Good point, I figured if he's asking "the basics" on diagnosis, then getting leak down/compression test done is probably beyond him, and best he calls in the cavalry. I'm sure someone on here would give him a hand for a few beers etc.

[ducatilover]

Is it still down on one cylinder?