Hey guys (and gals?)
My name is Mike and I just got a 92 CBR from a friend. He bought it, dropped it, never rode it again. We are both in the AirForce and just made the drive from Cheyenne WY to Dallas(his house) to pick it up. The bike has been sitting for over 3 years.
It is in pretty ****ty condition. Spray painted everywhere with running paint all over, chipping, surface rust on the frame, missing vacuum lines, spliced wires, etc etc.
The plan is to get it running so I can ride it for a month or two, put it in the garage, and strip it down during the winter to redo a lot of things.
I will post more pictures up, but for now you can see how I got it.

I will post more pictures today, with some needed advice.
As of now, the bike will start up(very roughly) but not idle, etc. It has been sitting for a long time.

 

welcome...looks like you got alot to do...lots of good info here..

 

Welcome to the forum, and like squale147 said, you can find a lot of information here.

You said the bike has been sitting for 3 years, so I see a carb cleaning/fuel tank flushing in your future!
Once you get the carbs and tank clean, check your plugs to make sure they look alright, and I'll bet you'll be up and running.

For what it's worth, honestly, we've seen bikes looking a whole lot worse on here!!

 

Yea, I am taking the carbs apart according to the sticky in the tech section. I have a bunch of wires cut, speaker wire running to the license plate light, etc etc.
I am confused about vacuum line routing since the previous owner removed the evap stuff.
In this photo, the left nipple between the carbs is supposed to go to the tank?


In this photo, the 4 lines from the carbs meet at this fitting. Where does this go?


Here are some random shots

 

The left nipple you refer to is a carb breather. It can be a short length of hose to the atmosphere or to a purge control valve for Cal spec bikes. The other four lines go to the collector that needs to be capped. I used a large rubber cap from an auto parts store. It is part of the air injection circuit.

Get a manual. It will be needed to fix this one. Ebay or Amazon.

 

Thanks for the reply. I did download the manual but got confused because I thought it all had to go to the PCV stuff

Also, should there be a line going to the bottom of the gas tank?

 

Well I figured out which line goes to the gas tank. I will pull my carbs off again and taking them to a friend who knows way more about bikes than I do.
I bought a battery today, installed it, and it started right up. Runs rough.
The CCT will be my next part to replace, I will order that fairly soon.
I also bought new NGKs for it, I will install it when I pull off the carbs.

 

man, this is frustrating. Had the carbs taken apart, thoroughly cleaned, reinstalled, and it still doesnt run right.
I can turn it on and it will run on its own but I cant jab the throttle without it sticking most of the time. The throttle(handle) returns to normal quick but the it still runs high. The springs seem good, the flaps in the carb return to normal on its own.
I have a feeling its one of the vacuum lines not being installed right, or not capped.
Oh well, more troubleshooting in the next few days.

 

A "hanging" RPM like that can also be caused by an air leak around the carb mounting boots... verify you got both clamps on each boot nice and tight.

Did the boots look rough and pitted where they meet the carbs and/or motor, or did they look real good, real smooth?

Start the motor from cold, and before the bike gets heated up too much (less risk of fire!), spray some carb cleaner around those boots, and see if it causes the idle to change - if so, you've definitely got an air leak at one of those boots.

Of course, you're on the right track with identifying all the emissions control lines, and getting those capped off/removed as necessary - chances are you'll solve your problem while getting that sorted.

There's one other vacuum line that needs to be dealt with, and that's the one between the petcock and the nipple on the side of the motor at cylinder 1, which is used to actuate the F2 petcock... if you have a petcock installed that doesn't have the vacuum port, make sure you've got that nipple next to cylinder 1 blocked.

 

Hey thanks for the reply.
My petcock does not have a nipple on it at all. The gas tank does have TWO nipples, one skinny and one fat. I connected the vacuum line from the motor(number 1 cyl) to the skinny one on the tank. The I left the fat nipple on the tank as is, not sure if I should have capped it.
Am I right connecting that line to the tank?