femi Posted January 15, 2018 Report Share Posted January 15, 2018 Hi there! The radiator fan on my EVO 250 MY16 is running very slow. I ended up voltage metering the generator yesterday and its about 3-4 ACV at mean engine speed. That's way less. I was metering at the plug under the rear fender, next to the CDI. Anybody with an idea to fix it? Thanks! Quote Link to comment Share on other sites More sharing options...
thall1 Posted January 15, 2018 Report Share Posted January 15, 2018 I had the same problem on my 2013 evo 4t...turned out to be the fuel solenoid shorting out internally....disconnect the solenoid - 2 pin plug - open the tap to give continuous fuel flow....then try it.... the new solenoid is around £90+ from beta uk..I tried finding an alternative but couldn't... in the end I bought a cheap fuel tap for around £3.00 and made a new connecting block to connect it to the tank...if you want I can up load a photo later? 1 Quote Link to comment Share on other sites More sharing options...
thall1 Posted January 15, 2018 Report Share Posted January 15, 2018 Here's what I did... 1 Quote Link to comment Share on other sites More sharing options...
femi Posted January 17, 2018 Author Report Share Posted January 17, 2018 Thank you, but I got 2 stroke. There is no fuel solenoid on my bike. Any other ideas? Quote Link to comment Share on other sites More sharing options...
lineaway Posted January 17, 2018 Report Share Posted January 17, 2018 Have you still got the head light and stock switches still on the bike? There has been issues in the past with these. Quote Link to comment Share on other sites More sharing options...
femi Posted January 17, 2018 Author Report Share Posted January 17, 2018 (edited) If you're talking about the competition parts. Yes, they are in use. I'll take a closer look on them this evening. Nobody else with the same issue? Low fan speed due to less voltage from generator! Maybe I did a mistake last time. But this evening the generator is doing well. It's about 60 ACV at mean engine speed. The fan worked proper but the lighting broke down. I checked the rectifiers output which was about 35 DCV. I'll replace the rectifier at first. It's obviously defect. Edited January 17, 2018 by femi Quote Link to comment Share on other sites More sharing options...
misscrabstick Posted January 20, 2018 Report Share Posted January 20, 2018 Sounds to me like a defective regulator, do make sure it has a decent ground though. Quote Link to comment Share on other sites More sharing options...
carlos Posted January 21, 2018 Report Share Posted January 21, 2018 Did you take the grounding bolt (under the rear fender) out and file off some of the paint, then apply some dielectric grease, worked for my 2017 Factory. Quote Link to comment Share on other sites More sharing options...
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