www.zxrworld.co.uk

only on models built for the colder climates.

lol like the UK model yep very cold and wet.

As far as i know just some models, my first ZXR didnt have that heater system but my current one does but it is an import. Yet sean's is a uk bike but doesnt have it

mine did iirc becasuse i couldent work out why it would be routed to were it was then to the carb lol now it all makes sence!

1993 l3
standard Air filter
No idea on spark plugs
Standard carbs
standard exhaust system
23,000km
No carb heater

No hot starting problems at all

1999 l9
33k miles
only thing not standerd art race can
heated carbs

& has hot starting problems

I've always thought it was just a Kawasaki thing. Every one I've owned has been a slow starter when warm. Living in the frozen north means they've all had carb heaters fitted

L8
standard Air filter
No idea on spark plugs
Dyno-jetted carbs 96 Main jets
standard exhaust system
8,000mls
Carb heaters

L4
Standard air filter
NGK CR9EK
standard down pipes, blueflame end can
15,000 miles

Never starts when hot! :smt013

stock L2
42,000km
no carb heaters
no trouble with hot starting

'94 SP.
Standard airbox, no filter
Denso Iridium plugs
Beet Co Japan full system
Needle circlip adjusted to 3rd notch from end of main jet needle
No idea about milage - it's a race bike
No cooling fan fitted

Will start from cold no probs. However, when it's hot it is as if the battery is dead - the starter barely turns the engine over. Sometimes all I'll hear is a relay clicking when I thumb the starter button. It will bump start on the 2nd or 3rd attempt though so I'm thinking it's an electrical gremlin in the works somewhere. If I leave it to cool down after a session on track though it will start no probs. Weird......

Sounds a bit like your battery is on its way out to me, cos the relay usually only clicks like that when the battery is going flat, could be its being charged incorrectly causing it to get hot.

1991 L1
Standard air filter
Don't know about plugs
Standard carbs
Standard exhaust
37,000 miles

Not sure on carb heaters, I'll check later.
No starting problems at all. Starts easier when it's hot

Just a thought here, zimm was saying in another thread about different cams etc being in the engines, could this be a related issue?.

Can i just try n put my view on this, my mate jon who owns his own bike shop n has previously owned and ridden lots of zxr 400s, i had this problem myself a while ago. He told me its somethin to do with the engine thermo playin up. Then 3 months later my head blew cos my engine thermo had died (common fault apparntly). Dont wanna say this is definately the cause behind everybodys problems but i wud get the thermo checked out just incase.

are you talking thermostat??