250cc Roketa MC-54B-250 Problems.. By Chris Waddle (Read 27,135 times)

[Chris Waddle]

Hello there. I'm new to this website. So bare with me!
I have a Roketa 250cc scooter (actual cc is 244). I'm having quite a bit of problems with it.
My radiator fan and headlights are acting stupid. My scooter only has about 2100 miles and run good except for these flaws. The headlights and radiator fan one day "stopped" working properly. Usually the Scooter's headlights would be on when the engine is one, but now they don't come on. The headlights only come on when I press the "flash bright light switch" above the high lights switch. And they don't stay on, they go off when I release that switch. Also, my radiator fan is being dumb. It does not come on when the engine hits the quarter mark at the Temp gauge. It just lets the engine run super hot! It still works however. It only comes on when I hit the "flash bright lights button." Extremely weird! So my headlights come on and so does the radiator fan at the same time when I hit that switch. The craziest thing is that I know the radiator fan is only supposed to run when the engine is on, but when I turn the ignition on and the dashboard lights up, if my engine is warm enough, I can hit that switch and the high beams and radiator fan will kick on! The engine is OFF. This is extremely weird, and happened out of no where. I'm hoping you guys here can help me out. It would be greatly appreciated. I've taken the entire thing apart to see what the heck is going on. It's my lack of experience with scooters that is killing me. I hope you guys can help me out, before I sell this thing to somebody....

Thanks in advance,
Chris Waddle

[Cruiser]

Hi Chris. It sounds like a blown fuse or a bad connection at a fuse holder. The OEM fuses are also of questionable quality and have been known to be open even when they look good. A loose connection on a 12 volt line could also cause this. This is the type of scoot that Dr. JR is a specialist on. He will be able to give a more detailed analysis when he reads your post.

[pop1205]

Hi Cruiser,

Thanks for that. I have already looked at the fuses. They look pretty good to me, but as you said they may look good and be bad. So I will try replacing those. I have stripped my scooter down to the bare frame and looked at every single cable and connection and everything looks good. Me and my father thought about the fuses and we checked them and they still look good. There is only one that the center connector is kinda weirldy shaped, looks almost melted, but it's still connecting so we determined it to be good. That just might be my problem. I'll try replacing the two fuses (Yellow with the number 20 on them) and I'll report back! Thanks!

[pop1205]

I changed both fuses today. The one by the battery and the other one I guess with a red cable to it, it also holds the spare fuse. Everything is still exactly the same. Instead of only being able to use remote start, I can use either or. The fuse by the battery was cracked down the middle (odd because I checked it yesterday and it was fine). I replaced it. The other one still looked good, but I changed it anyways. Scooter started on the second try from a cold start, which I was surprised at. But the headlights and radiator are doing the same exact thing. They aren't on when the engine or, but only the headlights and radiator come on when I hit the little flicker switch above the main high beam switch. And the only time the radiator comes on is when the engine is warm (duh) but only when I hit the little switch (hold it) and flip the big high beam switch up. It's still mind boggling. So all in all, everything is still the same. Scooter starts and runs great! Just can't really use it at night, or at all because it will overheat. I know it isn't a temp gauge or whatever, because when the engine is getting warm, if I hit the flicker switch, then the high beams on, the fan clicks on, just the second I let go of the flicker switch, headlights and the fan goes off and I'm back at the beginning. Please help, I love to ride this scooter and I miss it!

[pop1205]

BTW. I do not know where this 15A fuse is. I know there is a fuse by the battery, which is a 20A in mine. There is one under the frame above the muffler with a 20A, also holding a spare. I don't know where else a fuse is. I do not know where this 15A fuse is. Is it towards the front? Under the radiator. I'm looking at the wiring diagram and I did locate the 15A in the diagram, but I don't know where it will be on the scooter. It's showing towards the front middle section. Is it under the radiator? I have no idea. Any niche towards the location of this 15A fuse would be very helpful! Thanks!

[pop1205]

Alright. My scooter is the 244cc version.
The cable by the battery with the fuse has a 20A fuse.
The one under the frame above the muffler has a 20A fuse as well. Holding a spare I guess? Maybe it isn't a spare. Not sure.

They're both 20A fuses. So when you guys here are saying the 15A fuse I get very confused.

Also, I don't have burned cables. I said the little metal piece inside of the fuse (the connector) was warped or looked melted.

Also today, I discovered that the fuse by the battery was cracked (the metal piece within the fuse) which is odd because yesterday I checked it and it was fine. So today, for safety sake, I changed both fuses I know of. The one by the battery and the one under the frame above the muffler. I have had this scooter stripped down all the way to the frame and checked every cable connection and looked for burned wires. Nothing out of the ordinary. Oh, and when I put the new fuses in, my scooter is doing the exact same thing as it did before I changed the fuses. Not sure what the heck is going on.

[Cruiser]

Hi Chris, if you have a fuse box like this located next to the battery:



then you will also have to check the connectors inside the box that the fuses plug into. They tend to push out of the bottom of the fuse block which results in an intermittent or open connection. Like having a blown fuse. The wires have to be pushed in from the bottom of the fuse block until they lock in place. Some people have found it necessary to replace this fuse block with a quality one in order to avoid opens and intermittent connections. Also, my scoot has a 15 amp in line fuse coming off the battery instead of a 20.

[pop1205]

Nope guys, no fuse box by the battery. I will post pics of what I am talking about in a few hours. I have to head to college in a few mins. I get out at 10 am. This fuse I'm talking about is next to the battery, on a black wire itself. It has a 20A fuse in it. I will post pics later. Seems like this is something different than the usual?

[pop1205]

Yeah guys I'm totally stomped. I will strip my scoot down to the frame and inspect everything very well one more time. I will take pics to help everybody understand. Give me some time to get oily ;D

[pop1205]

Alright guys. I have my scoot naked now! And I have the pics.
This first one is the black fuse thing by the battery(which is removed and this box is around the red and black cables). As you can see, hopefully, it has a 20A fuse in it. When I got to it it was this way. Should this be the one that's supposed to have the 15A fuse? If it is could the problem be that the entire line is fried? I sure hope not! I've got some more pics to show you guys to help clear up confusion.

[pop1205]

This one shows the "spare" I believe it to be on the back of the next picture. This one is a 20A as well.

[pop1205]

Now this pic shows the fuse thing below the frame but above the muffler. As you can see it has two red cables to it and it also have that 20A fuse there. BTW all the fuses in the pics have been put in yesterday afternoon.

[pop1205]

This is my scoot naked No idea what is going on. I think it may be that there was a 20A fuse where you guys believe the 15A is supposed to be. If that's the case it may have fried my line (hoping now because it's too many wires!). Hoping it's just a simple put in a 15A like it's supposed to be and bingo! But with my luck, I'll have to rewire everything after getting a new line. Oh joy!

[ccprof]

Welcome Chris. I know nothing about the 54B but it sounds like you have a wire rubbing bare against something - maybe up front around the fork? Anyhow you've got Cruiser on it, he should get you all fixed up.

[pop1205]

Hey ccprof,
I've checked very thoroughly to see if anything is touching (grounding out) and to my site I don't see anything! I miss my scoot and I'm working day in and day out trying to get this thing acting right. It starts and runs perfect, it just these stupid electrical problems are prohibiting me from enjoying it...