www.zxrworld.co.uk

2 days ago i drained the entire coolant system as the previous owner had decided to use water, that had turned rusty and brown

filled it up with coolant, took it for a run, the bike got hot very quickly. the needle was in the horizontal centre line with in 3miles of easy under 5k revs riding.

i had the rad cap off and the engine running to check for airlock and i spotted a constant stream of biggish bubbles.

Just rode it home and heard bubbling in the exp. bottle.
no moisture or cheese in the oil, bike runs sweet, just gets hot quicker than it did before.
Has the HG finally died?
Where can i get a replacement in the north west tomorrow (thursday) and what the hell do they look like?


Cheers

my zxr750 did this mate after i changed the coolant, i would say its just air in the sytem, thats all mine was.i changed the thermostat and it stopped so could be the thermostat has rusted solid and not opening and letting the coolant to circulate properly.

Coolant...................was it ready mixed.......................?? or was it in need of water to get the ratio correct. Did you check ?

Did you fill it via the radiator cap ???
Did you note in the manual how much it should hold and compare that with how much you put in ?

Did you top up the expansion tank ? ?


Head gaskets like most parts can be had next day delivery from Cradley....................and if I have to post that again I think I'll scream

Panic over.
new air filter, and stressing over the bike getting to temp quicker than before.

no need to be alarmed. bike is running sweet