20 Most Recent 1990 Honda CBR 250 RR Questions & Answers

The spark plugs should not affect the heat of the engine. A hotter than normal engine is an indication that the bike is running lean. Is your bike carburated or injection? What year is your bike? If it is Injection, then it is fuel mapping, and if it is carburated, then it is the airspeed mixture needle.

The speed omete cable is different than the rest .Its probably broke and needs replaced ,If you dont know how to do it ,I would take it to someone the is skilled to do it.hope nthis helps

at midpoint of the chain you should have about 2 inches(50 mm) deflection total with the bike loaded with normal rider.

I would replace the battery. Over time the cells of the battery can sulfate and cause it to not be able to keep a charge. First start it and with an ohm meter check that it is charging at at least 12.8 to 13.2 volts at idle. If it is it is the battery and it needs replacing. I’m happy to help further over the phone at https://www.6ya.com/expert/al_e83b1941f9c0f302

Try putting it into the radiator which is located under the fuel tank. The little white cap that is under your seat is the reserve, but make sure you actually put water and coolant directly into the radiator.

Because most Hondas are equipped with a vacuum diaphragm on the tank valve. If you **** on the line it will open the diaphragm and permit fuel to flow through. That's the third hose. When you crank the engine it uses that vacuum to open the diaphragm. Hope I've helped. If so please rate my assistance and leave a testimonial. Happy Holidays!

http://www.oldmanhonda.com/MC/Rcarbs.html

Its okay. For as long as you're not revving the bike on its redline for too long. CBR, XJR and other inline engines love high RPMS. They're built for it.

Im not sure, and i would only be able to diagnose if i could hear it myself. Was that a full clutch replacement, or just friction plates. Did they replace the clutch basket and install new clutch plates and springs. its possible that maybe the clutch bearing is going bad but thats a long shot at best. You should be able to tell if it is a clutch problem when its running good, giver all shes got all the way to red line and see if she slips or starts to make a noise, please do it safely, if that all checks out good then i would say you probably do have a fuel problem. Just need to put some Seafoam fuel cleaner/stabilizer in the tank 1/3 can two gallons fuel and since your going to change the filter just fill up the filter with the cleaner and drive bike around for at least 10 miles that should remove anything cloggling up the jets, get the fuel problem taken care of first, and then you can start to try and locate the squeal. make sure you got plenty of oil too. Hope you get her running right!

free manual download from honda.. here

http://hondatech.info/downloads/Moto/CBR/

Clean the carb inside. Clean pilot jet and main jet. Bike should start

do u have any spark at the spark plug. When the kill switch is faulty it won't give any spark try disconnecting. sometimes this kill switch grounds itself or the contacts stay closed. For it to have sparks contacts should be opened. This kill switch grounds the coil so the engine stops running

its quite normal for these bikes to scream at high revs its what they do at the high revs though it becomes more apparent with engine age and thrashing into the high revs maybe a good service is due hope this helps

When I raced I was only able to get about 4 races on my back sprocket. If you race you must do it at the same time, but if you do not look at the back sprocket and once the teeth start to bend a little bit, CHANGE IT, before teeth start breaking off.