Why won't my 250 Bandit start?

[ducatilover]

But didnt you say it starts you pour petrol down the carbs?

If so its not spark.

Weak spark could be the issue.

all the wiring on the bike is clean. have just tested the coils on the bike and the resistance was outside the specs. reckon this could be the problem?
if so do coils from other bikes e.g. 400 bandit or GS500 fit it?

Any boils will do.
But, did you allow for the resistance of the leads on the multimeter/ohm meter?
It's possible it's a spark problem, more likely your battery voltage is dropping to low whilst cranking. I'd try push starting it.

[nzspokes]

But if it was weak spark why would it run when fuel poured into the carb?

[ducatilover]

But if it was weak spark why would it run when fuel poured into the carb?

More fuel to ignite/burn. Would go "thump thump flup" or however you type the noise I have in my head.

[Ultrasonic2]

when you say you replaced the CDI . what CDI did you replace it with . do you have a pic of it or a link . cos i bought a china cdi it worked for 15 minutes then stopped working

[lone_slayer]

I would try some start ya bastard... just keep spraying into your airbox till the bike starts if your bike is anything like my gsxr250 its not a fan of starting if been left for a while.

If you think its your CDI I have a spare 1 for $40 for a GSXR250 dont know if they are the same or not but can put up a picture if your interested.

Also GSXR250's flood very easily how are you starting it?
If mines been left for more than a week and a half your best to switch the tank to prime for a while before trying then full choke no accelerator or start ya bastard full choke no accelerator...

Once started as long as you start it once a week its just full choke no accelerator fires straight away and once warmed up for atleast a few hours you wont need the choke...

So my bike is a GSXR250 1990 GJ72 pretty sure the engine is the same as the bandit but the electronics may be different..

Hope this helps and good luck

[MSTRS:Me]

... got a brand new fuel filter in as well.

I'm assuming your fuel line isn't kinked?

Two common problems...
Added a fuel filter, but didn't reduce the length of the hose = kink. Or hose ends up with a u-bend, like a sink trap.
Or fuel filter wrong way round. Some are one-way flow.

[ducatilover]

Two common problems...
Added a fuel filter, but didn't reduce the length of the hose = kink. Or hose ends up with a u-bend, like a sink trap.
Or fuel filter wrong way round. Some are one-way flow.

Also some in-line fuel filters will not let enough fuel through because the Bandit is gravity fed.
If it's overfueling on start up it might bore wash too, which can be interesting
Personally I'd pull the in-line filter out and use the one Suzuki fitted in the tank.

[unstuck]

Carefull using ether based sprays on any machine, they get addicted to it.

[Fast Eddie]

I would try some start ya bastard... just keep spraying into your airbox till the bike starts

..and once warmed up for atleast a few hours you wont need the choke...

hhaha oh my lord..

Don't spray too much start ya bastard, it says on the can just one short little burst, you don't need F all of it at all.

and warmed up for a few hours?? ahh.. classic, think you'll find you only use the choke for about 30 seconds before shutting it off. bike should idle by itself and start by itself after that. If it doesnt its time for a tune and a clean up.

[lone_slayer]

hhaha oh my lord..

and warmed up for a few hours?? ahh.. classic, think you'll find you only use the choke for about 30 seconds before shutting it off. bike should idle by itself and start by itself after that. If it doesnt its time for a tune and a clean up.

Sorry was talking about starting and re starting the bike not running the bike with the choke on for that time. if the engine is warm no need for choke to start it was what i meant