Help FZR250 - coolant leak in hardline behind block/head

Have a coolant leak in the hardline that wraps around the back of the engine where the carbs are.

Pisses out good when you give it a rev.

Is it just an oring in there? Nothing special?

Just picked up this machine and going over it. Im also not entire sure how much noise from the head at idle is normal on these I know they make a bit of noise but not sure how much. Almost like a chain dragging noise and ticks at slow idle when reved up sounds normal and healthy.
I might have to look into the idle speed.

 

Cheers man I'll hook into it tomorrow.

So the chain is just a bit stretched or something you reckon? So thats just a case of de pinning the current one and pulling it around until the new one is on there and repin it. The previous owner seemed to think it might need lash adjustment or something but it doesnt sound terrible to me.

Is there a section in the manual for checking the chain on the engine or it has to come off to be measured?

 

Ok been over this thing and just ridden it downt he block. Jeez few things to replace alright.

Done the orings in the two coolant tubes but now I need the onesn marked 16 in the drawing above and also might aswell do 8 to. Is that bearing in the water pump also replaceable and just a generic bearing or do I have to go oem for it? Or do you have to buy the complete pump?

One of the exup cables is snapped so I need a pair of exup cables aswell. It has no power when I just drove it down the driveway and back I think this is likely more of a carb issue I doubt the exup valve makes that much difference?

So for now:
8,16 and the bearing for waterpump in the drawing above wheres best to buy?
Exup cables where best to buy?

Thanks

 

Are the oem exup cables discontinued? The link with all the parts seems to suggest they might of stopped selling them or is it just that seller?

The black outer on my cable is torn up and its snapped the end clean off the black bit as well as the cable so I wouldnt think those custom cable replacements will work for me. I need the complete cables with the black outer which it slides in.

 

Oh ok yeah I might just buy the full Litetek kit then. I would like to give it another try but thinking now I should just pull the whole thing down and check the chain and that anyway. It did make a tick noise when I was just off idle coming up my driveway on it. I need to check the chain and the valve clearances.

The carb airbox wasnt sealing properly due to the boots shrinking which is likely whats caused the carbs to go out of tune with the dirt getting in there I would think. My fix for that was putting stainless steel tube in there to hold them out. Of course it makes it a big of a wrangle to get the airbox and that on but its doable:

 

Wheres the cheapest you guys have found for the carb metal bits emulsion tubes, diaphragm I suppose you have to buy it all including the rubbers? Or should I just pull the carbs down and inspect and only order what I need?

 

OK I ordered your Litetek seal kit already. Im finding all the rubber on this engine is well past its use by date so im taking the approach to replace all that I can while its apart.

So for the needles emulsion tubes etc do you guys just get the part numbers out of the following link and order them? https://www.megazip.net/search?q=3ln

Holy fook!! are the diaphrams really 250usd each??? Ok then they'll probably be staying put....

 

It has the oil filter under the engine so its not been replaced with a late model one (well atleast the crankcase I guess). Its registered as an 89 FZR250R. A vincheck tells me the engine number starts as a 1HX. Where is the engine number on these?

When iv been pulling stuff off this bike certain things around the engine to me look like they've never been touched which seems amazing at 73000kms... I think this might be the original engine. Prior to the previous owner who let it get into a state of disrepair due to no money this bike was VERY well cared for.

 

Heres s pic of the bottoms of the carbs.

 

Do you guys think those carbs are original 3LN1? The pinned post on identifying carbs/bikes seems to suggest a blank carb without the two nubs cast into the base of the carb is a 3ln1 but the other three have nubs but they are different again to the pics in the pinned thread?

Am I missing something here?