ninjette.org - View Single Post - Reviving a Ninja 250 - Low compression

spotmaxdog · January 29th, 2022, 07:59 PM

Got it to run!

Pulled the carbs apart one last time. Blasted out everything with cleaner and compressed air. Replaced all the hoses with new ones. I think that did the trick, probably had a lot of air leaking through the carb.

Now it runs and the throttle response is even decent for a first try at the mixture screws. Just had it running for about 15 minutes in the garage, slowly turning down the idle screw from 5000! rpm down to about 1500.

First time it's run in about 10 years. Smoking from EVERYWHERE. So much oil and cleaner residue getting baked off.

Next up is troubleshooting the cooling system. Rad fan isn't turning on and the IR thermometer is showing 245F at the switch and the temp gauge at the very bottom of red before I got tired of waiting for the thing to turn on.

Project for tomorrow, but very happy to see the patient has a pulse. After the cooling system is fixed I think I'll go put the chain and rear tire back on it and see if it'll go down the street.

January 29th, 2022, 07:59 PM	#10
spotmaxdog ninjette.org member Name: Terry Location: Pensacola FL Join Date: Jan 2022 Motorcycle(s): BMW R1200GS, R1100S, Suzuki GR650, Ninja 250 Pregen Posts: 24	Got it to run! Pulled the carbs apart one last time. Blasted out everything with cleaner and compressed air. Replaced all the hoses with new ones. I think that did the trick, probably had a lot of air leaking through the carb. Now it runs and the throttle response is even decent for a first try at the mixture screws. Just had it running for about 15 minutes in the garage, slowly turning down the idle screw from 5000! rpm down to about 1500. First time it's run in about 10 years. Smoking from EVERYWHERE. So much oil and cleaner residue getting baked off. Next up is troubleshooting the cooling system. Rad fan isn't turning on and the IR thermometer is showing 245F at the switch and the temp gauge at the very bottom of red before I got tired of waiting for the thing to turn on. Project for tomorrow, but very happy to see the patient has a pulse. After the cooling system is fixed I think I'll go put the chain and rear tire back on it and see if it'll go down the street.