2003 Honda Ruckus radiator spits coolant. Manual doesn't say anything about if this happens what to do or what will be the cause of this. It happens when riding it only for about 3 - 4 miles on road. Please help need to know what might be the cause on this. I have a big gun evo s Closed course exhaust. I love the ruckus but im not so familiar with it and how the engine, carb,radiator,etc. work all together. Example( the radiator controls what that helps or makes whatever do whatever).

that looks like a compatibility issue
check the user manual if u have it or get one from https://www.reliable-store.com/

Hello, Natasha -

This is a link to a 2003-2007 Honda Ruckus service manual:
http://www.motorscooterguide.net/Manuals/Honda_NPS50_Service_Manual.pdf
(PDF document; Adobe Acrobat Reader software needed.)
It contains illustrations showing the locations of the VIN tags.

The 2015 model may be similar enough to the 2003-2007 models.

Best wishes.

for better result download the pdf file
2003 2007 Honda NPS50 Ruckus Motorcycle Repair Manual PDF

could be a relay but check the chain and sprockets for worn links and teeth
if the teeth have sharp points and no fully formed teeth profile it behaves as if the pitch is wrong and the chain will slowly pick up near the tip of the teeth then click back into the sprocket

I'am made $84, 8254 so far this year working online and I'm a full time student. Im using an online business opportunity I heard about and I'AM made such great money. It's really user friendly and I'm just so happy that I found out about it. Heres what I do,.for more information simply open this link thank you....

COPY HERE??? ­­www.hit2day.com

Hello and welcome to FixYa! If you have overheating problem, it can lead to multipleissues. You may be running on low coolant that's why the vehicle overheats. Ifthat's the case, please add coolant and make sure that it sits on the rightlevel, too much coolant can cause overheating too for coolant will overflow. The vehicle may have a faulty or worn out radiator blowermotor that's why it overheats. If that's the case then you will need a blowermotor replacement to resolve the issue. If the radiator is clogged with dirt and rusts this issueoccurs too. The coolant doesn't flow normally on the cooling system if it'sclogged. If that's the case, I strongly suggest that you have the radiatorflushed to drain out dirt and rusts. If you think that the radiator served youenough then it's better to have it replaced. Please do check the radiator hoses, If you have worn outhoses it can cause coolant leakage which can result to overheating. A tiny holeis good enough for the vehicle to overheat. A faulty thermostat sensor can cause the issue too. If youhave worn out thermostat, the fan may not trigger that's why the fan won't workwhen under stressed conditions. A blown radiator blower fuse can cause thisissue too so I suggest that you check the radiator blower fuse and replace itwhen necessary. What causes the radiator blower fan fuse to blow? It's becauseof a failing radiator blower motor, If that's the case have the radiator blowerfan motor replaced. If the fluid in radiator doesn't circulate then it meansthat you have a blown head gasket or a faulty water pump. I suggest that you gofor the water pump replacement first specially if you think that it's near theend of it's service life. Usually, water pops out the radiator when engine isreved (a sign of faulty water pump and possible blown head gasket). Hope you find this information helpful enough and thank youfor using FixYa! Have a good one!