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Discussion Starter #1
So, My buddy wants to learn to ride motorcycles... His uncle gave him a '95 CBR900RR for $500. The price is right, right?
I tried to convince him to start out on someting a little smaller but he wants to ride this thing. Oh, and it has an auto-shift-gizmo installed so it has probably been dragged (abused).

So, we limp it up the ramps into the back of my truck with both tires flat and haul this bitch back to my garage. I am going to get it running!

Here is what I have found.
The bike had been sitting for 5 years before about 2 weeks ago when my friend and his uncle changed the spark plugs and supposedly drained the tank and put in fresh fuel.
I tried to start it and it fires but not strong enough to idle. I pulled the tank and drained the 1/2 gallon and it looked like mountain dew and smelled a little varnishy. I changed the fuel filter which was black and checked the fuel pump operation. the points where smoked so I changed them. I then re-assembled everythng and FILLED the tank and added a bottle of fuel system treatment which was recommended my my local honda shop. Hit the starter and bang, it idles... Weakly but it idles. Small victory. As soon as I even touch the throttle, it dies. I check the pipes and find that the 2 cylinders on the left are firing but the ones on the right are not. I checked the coils and found that each one fires a cylinder on each side so I am assuming that spark is not the issue. I am guessing that the carb on the right is all gummed up with varnish and maybe the float needle is stuck shut. Who knows what I'll find as I tear into the beast.
I am going to pull the carbs and rebuild them. Any advise or tricks? I am a heavy equipment mechanic, hydraulics specialist. the smallest parts I work with weigh over 20 lbs. Ive never had one of these new-fangled carbs apart.
Thanks... Badandy:evilaugh:
 

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:) you could try spraying carb cleaner in them let it sit for a few min and spray some more empty out and try ,if it runs better rebuild all of them ,good luck sounds like good project.
 

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I'm not good on technical but good luck with this one buddy, would love to hear about your progress and maybe see some pics as she comes along :D
 

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the points where smoked so I changed them.
Points?
Do you mean the spark plugs?
Sitting for five years is almost certain to be gummed up carbs. If it hasn't been sealed up you might also have rust in the bores and valves.
 

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Discussion Starter #5
The points I replaced where the ones in the fuel pump.

So, I have hit my first bump. I cant get the carbs off! I removed the band clamps on the rubber tubes that connect the carb barrels to the head but I cant get the carbs off. I am used to working with heavy equipment. If this where a backhoe, I would just use my 4 foot pry-bar but I dont think that is the way to do this. I have gotten the carb to rock a little bit but cant get the rubber boots to disengage the head...
HELP?

BadAndy:evilaugh:
 

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The points I replaced where the ones in the fuel pump.

So, I have hit my first bump. I cant get the carbs off! I removed the band clamps on the rubber tubes that connect the carb barrels to the head but I cant get the carbs off. I am used to working with heavy equipment. If this where a backhoe, I would just use my 4 foot pry-bar but I dont think that is the way to do this. I have gotten the carb to rock a little bit but cant get the rubber boots to disengage the head...
HELP?

BadAndy:evilaugh:
Try heating the intake manifolds with a hairdryer.
 

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Discussion Starter #7
I cleaned up carbs and am ready to start going back together... The jets where f$#%ing gummed up! Surprisingly, the ones that where the most clogged are for the cylinders that where actually firing! Weird...
Does anyone have an electronic copy of the carb tuning manual? This will be my first time tuning carbs and we are going to sell the bike when it is running, so I'd hate to spend $40 on a shop manual and only use it once.
I finally convinced my friend to learn on something a little more reasonable and I dont want it. My Ducatis are starting to look at it funny.
 
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