2006 250cc Tank Urban Touring Hard Start By ccBig (Read 1,635 times)

[ccBig]

Hey All,

Thanks for your help with the cooling system and carb. My scooter overheated at the end of the riding season last year. Oh boy! Well, I found my cooling fan bearings had gone out which is why it over heated. I've replaced the head gasket, fan, and fan switch just to be safe.

Well, it ran great for two days after the new parts. But now I have a hard start issue. Got stranded at work last week. Luckily a friend came and jumped me.

Never had the problem before. It would always start on the first crank.

With this scooter, the headlights come on as soon as the engine starts running, not before. I cheated the main fuse plug so the headlights would not come on at all. When it was setup like this the engine would start fine. As soon as I put it back to normal and the headlights would come on when the engine began to run on its own, it would stall every time but most of the time it would not even start. I've switched the headlights so I can turn them off. I turn off the headlights, start the scooter, let it warm up, turn the headlights back on, and head down the road.

Any ideas on a part the could go bad and cause something like this?
Am I way off thinking it has something to do with the electrical?
Any ideas would be helpful.

Thanks.

[Bashan]

If I understand your situation correctly it was doing fine with the switched setup you have until the incident where it wouldn't start at work. The first thing I would do is get the battery load tested. They can check fine at resting voltage but then tank on demand. There's no sense chasing electrical gremlins until you rule that out. JMO, Rich

[ccBig]

It was actually doing fine before adding the switch. It would start and run without any problems. The headlights came on automatically and that did not stall the scooter or keep it from starting. Now I can drive it but I have to kill the headlights until it is warmed up.

Good idea. The battery was new last year but I will have the it tested to get started. The electrical gremlins can be sadistic!

Thanks

[ccBig]

?!?! Ok. The battery is good.

With the headlights switched off (I wired in a switch), I can get it to start but I have to crank it over and over to the point I think the battery is going to die, then it starts. When it does start, it barely runs as fast as when the starter is cranking it, and seems like it could die at any time. After a couple of minutes, it gets stronger and I can switch the lights on without killing it.

New Development: now it also sputters when taking off from a stop, even after it's warmed up. It sputters at every stop sign/light. I can ride for a half hour and it is still doing this when taking off. It also sputters if I am at low throttle, cruising around 20 to 25 mph.

It did not do any of this before. Up until the end of last season, it started on the first crank and ran strong/great.

Most recently, the battery tested good and I replaced the spark plug. I threw the old spark plug back in to see if any of the problems improved/changed - no change - I put the new spark plug back in. I also drained the tube that hangs off the breather assembly, the one with the plug in the end of it. The battery charges fine when riding.

[bhinch]

Adjust the valves....on the 257..the intake is .004 and the exhaust is .006 and then adjust the idle to 1800 to 2000 rpms.....enjoy...

[ccBig]

Thank you for the specs but its actually the CFMotto - 244cc engine with the vertical cylinder.

I found a video showing how to adjust the valves the old fashioned way on YouTube but I can't find it back. The only video I can find on it now is the one that's posted on this site. This shows you how to adjust the valves when the engine is warm and running.

Anyone have a link to a video showing valve adjustment on the CFMotto 244cc engine? If I find it back I'll post it here.

[bhinch]

Did not realize which engine you had...not sure on your 244....I am sure you will find the specs you need....

[ccBig]

Thanks anyways bhinch. I appreciate the time you took.