Project ‘89 FZR250r 3ln1

How good

 

Hi all,

I am finally taking my bike in for a reregistration check this Friday… have been putting it off for so long waiting for those carbs, now she’s back together I’m hoping it all goes smoothly and passes.
Here in NZ because it’s previously been vinned and registered it should be fairly straight forward - much like a warrant of fitness check but a lot more thorough.

Will let you guys know!

 

@Frankster @ruckusman thanks I’ve just noticed your replies sorry didn’t get the notification.

I’ve had it running for an hour or so and seems to be revving up just perfect atm, yet to change the other 2 plugs but will do that this weekend. Cheers

 

So I’ve noticed spark jumping from the #1 cylinder lead jumping to the valve cover. Is that a clear sign I need new leads?

 

Yeah I've been hearing a clear 'click' from which I know see is the spark jumping from the spark plug cap right about where it reads "NGK" as in your photo above and directly across onto the inner face of the valve cover. I noticed while running it in the dark but can see it clear as day in the light too.

I was wondering about the leads, I bought a set from the local super cheat but I suppose they wont be suitable. I'll read through that link thank you!

 

So changed the #1 + 2 plugs. Noticed the lead caps are 5ohm. Anyway put the caps back on and the #1 lead fell out of the coil…with two cable ties which I assume were there to hold it in place.
So I have managed to buy a second hand pair of coils with leads etc - will try them out on the weekend and fingers crossed she runs abit better.

 

So I’ve replaced the coils - no more issues there. However, I’ve run the bike with the air filter off and noticed the #2 cylinder carb ‘slider’ isn’t moving at all when I rev it. I’d say that’s my problem - any ideas what’s happened there and can I fix it without taking the carbs off?
Here’s a photo:

 

Just spoke with the gentleman who rebuilt them and he says the sliders should only be working with the tuned air box on/filter box. Have put it back on and is running a lot better, but, there’s still that hesitation under full throttle which I can’t help but think is that #2 throttle slider.

 

Yup whipped the carbs off and took them to him for an inspection and sure enough it was the pinched diaphragm. Am absolutely itching to get them back on and test her out. Fingers crossed this will be the golden nugget.

 

To be fair though without the air box on it won’t rev properly, perhaps on another bike he’s experienced it.
Anyway, so pleased to say it’s finally running like a dream, Revs hard all the way to redline. I’d forgotten how much fun these bikes are! For a little pocket rocket they really excite the nerves.
There’s a very slight hesitation down low on part throttle, very slight though so nothing I’ll worry about.
Thank you all for the great advice. Next step will be sorting the warped rear disc - I had to replace it for compliance and the second hand one I put on and passed declaration on is warped. They required a minimum thickness of 4.6mm from memory.