Won't stay running! HELP!

[2blue1's]

OK I need a little help. We got our scooters Thursday (2 urban racer 150's), One runs fine but the does not now. when we first unpacked them and gassed them up they both started fine. I let them idle for about ten minutes then that was it everything seemed OK. Next morning one was fine but the other acts like the chioke is stuck. It won't start unless I give it gas, then it won't stay idling without giving it constant gas. It also sounds "deeper or throatier" like the choke is on. Also the gas gauge is not working but there is voltage to it also there is voltage to the sensor on the tank. Thanks.

[Cleat]

Have you checked the idle screw?  May have rotated while on the first time.  Have you checked the fuses -- some maybe hidden from plain view?

[2blue1's]

I checked the screw with the spring. I am not sure which one that is, if it is the idle screw or the air fuel mix, but it only helped by finally after screwwing it down (4 or 5 turns, alot) it would idle but it would rev up and down from 4000 rpm to almost dying. Now I did figure out it had too much oil in the crank case. I have emptied it and refilled it to the proper amount, would this have the affect on it that I have described?

[Cleat]

It's one part possible but it doesn't sound like your main issue.  Is the fuel flow constant in the first place?  It sounds like you're okay on the spark and air sides of the equation but not sure about your fuel flow.  Is anything clogging the line? I have heard of some of these scoots having a problem with carburetor line or pump failure... you need to follow the fuel from the tank to getting into the cylinder.  If the vacuum line going into the carb is leaking (cracked or displaced) then it's a good bet that is a possibility.  Just not sure from what been said so far.  Oh and yes, the screw with the spring is your idle adjust.  You should be able to see where it starts to contact metal and become effective.

[bbj500]

if your other one is running ok then might i suguest that you take off the cover and put it next to the one your having problems with and do a good compairson. check the hoses, look from bike to bike to see if there the same, look one hose at a time if you find one not the same it may be your problem.....also i dont know who you bought them from, but a call to teck support will possibly solve your problems also
just a suguestion.............JOHN

[Seattle Slew]

Did you ever fix the prob with the idle?
I just recieved my racer couple days ago and you described my prob to a tee.  I did notice that when I recieved the tank a coulpe of hoses were not attached so I fixed that, but this idle thing just popped up so I went searching  and found my new faviorite site ( this one ).  soo i'm off to check that little choke screw and the fuel lines.  let me know if you have any luck!

[2blue1's]

The problem is still not fixed totally. I went out  today ( just for giggles ) to see if it would start. It did and it idled for a little while before dying. The idle wasn't fluctuating quite as much. I still think that the too uch oil thing had something to do with it. It smoked pretty heavy but as I run it more and more it seems to be getting a little better. The problem is that I cannot take it out on the street yet because I have the cover off for the gauges since the fuel gauge isn't working either. I hope blowing this thing out riding it for a short while will at least help. And yes I am going to check all hose connections just to make sure nothing has come loose. Does anyone know where the choke adjustment is? ( If there is such a thing. ) Thanks to everyone  helping.

[bbj500]

i read in one of the bbs in an article someware that over filling the oil can clog up your air filter and cause all sorts of strange problems.........might want to check the air cleaner out, just a shot in the dark

[2blue1's]

Ok, I have checked the fuel flow to the carb. It seems to be getting plenty of fuel. I have adjusted the idle screw , it doesn't seem to help. I still have to feather the throttle to keep it running for any amount of time. If I give it too much it dies. It is still smoking also. If I leave alone once it starts it dies. It will not start without giving it gas. I have even taken the carb out and compared it to the one that s working just to compare the butterfly valve. Looks the same. Maybe someone can help with this info. And remember that it started and ran the first time I started it and it ran for ten minutes no prob. So it seems as if were simple. Also remember when it does idle for a few seconds it fluctuates up and down until it dies.

Thanks for any help and to all who have.

P.S.   I have checked all the fuel lines for leakage or some air getting in.

[bbj500]

I asked a small engine repair friend of mine about this problem, he said that over filling the crankcase with oil can cause this, over fill oil will actualy come out of the carb cloging the air filter and fouling the plug. causeing the motor to not want to idle, and smoking. he asked if the smoke was white or light grey in color, if so your burning oil, he says to make sure the oil level is correct and then remove and clean, or replace the spark plug. make sure the air cleaner is ok too. he said just rideing it will probably improve your problem, as it burns off the oil now coating the inside of your carb and plug.  but if hes correct it wont go away completly till the plugs cleaned. I have no idea if he is right or not i never claimed to be a repair man but he has alot of experiance and has been fixing my cars, lawn mowers and scooters for many many years. might want to check the plug
JOHN

[2blue1's]

Thanks John for your friends input. I think I am actually making a little headway. I drained a little more oil out. Smoke is almost all gone. It will idle now but it fluctuates up and down on it's own. And if left alone will eventually die. If I try and feather the throttle it will die unless I feather it at the exact right time in between up and down fluctuations . It sounds like it is flooding out. It doesn't like a load on it. Maybe your buddy can help with this prob. Thanks, Scott

[bbj500(john)]

i wont see him untill tuesday but i will ask him for sure

[Phallout]

Hey Blue any luck yet?  You have me a little nervous as I have a Racer 150 on the way.  Was hoping you had your problems solved.  Let us know! :wink:

[2blue1's]

I recieved two on the same day. The other runs great. I believe it is an adjusment or something easy I hope.  Just remember to check all hoses from carb and loose bolts. I have had the exhaust be loose, fuel hose off, throttle cable loose, and thats all on the same bike. Scott

[Stuart23]

I just got two Urban Racer 150 DE's and, much like yours, one runs, but the other won't stay running for more than a few seconds. If you give the scooter more throttle it just kills the engine faster. We've adjusted both the idle speed & air/fuel mixture screws, but to no avail. Has anyone solved this problem yet?