|
|
Post by hkelman on Aug 25, 2009 20:56:54 GMT -5
I have been trying to diagnose problems with 150cc scooter for some time now - posts are headed scooter dies when hot. There is supposed to be a set of two resistors in the ignition/charging system. Anyone know where these are typically mounted? Are they on all or just some brands? I have Wildfire 150S. Wildfire has been NO help at all.
|
|
|
|
Post by indy50 on Aug 25, 2009 21:31:19 GMT -5
Usually resistor is located near the steering stem after you remove the front panel
Are you sure it's a resistor issue...........
Engine temp shouln't affect a resistor
|
|
|
|
Post by wf1761 on Aug 26, 2009 8:16:01 GMT -5
You should trace the wiring out to find the resistors. Also you maynot even have resistors in your scoot.
|
|
|
|
Post by JR on Aug 26, 2009 19:43:19 GMT -5
I have seen the resistor(s) on a wiring diagram but not on a scooter yet. They are shown connected to an on/off headlight switch so that a load will still be there when the lights are turned off, I suppose so that the regulator won't have to pass the excess to ground. I haven't yet seen a scooter with a headlight on/off switch. Wait a minute what scooter do you have? I know what you are talking about as far as the thing with cycles that have an on/off switch on the headlights but it is rare with scooters and I've got 10 different 150 wiring diagrams and they DO not have a resistor of any kind. The 250's do have a directional diode in the loop going to the battery but it doesn't connect to the headlights. If you have an older scooter then it may have and on/off switch and typically a resistor is in the on/off switch loop to similate load when in the off position. JRR |
|
|
|
Post by Aerostudent on Aug 26, 2009 20:10:32 GMT -5
dies when hot? maybe vapor lock?
|
|
|
|
Post by hkelman on Aug 26, 2009 20:11:48 GMT -5
Good replys! Perhaps the original message is now a little misleading. The problem now happens if the key is turned on for a minute or so and the try to start it. From a totally cold start it starts fine then dies shortly after. With the key on a minute it does not start properly. Well, it starts but runs like it is dieseling and no power at all. I think it could be an electrical issue and a resistor is a common culprit of such issues. Perhaps there is no resistor because I have searched and cannot locate one. Is it possibly in the stator unit under the fan cover? jrryan: Do the 150s have such a diod and where would I look? Would a troublesome auto enrich valve or carb problem do this? Been hunting for a solution for two months now with professional mechanics who run this same engine in racing dirt bikes and go carts. They are stumped.
|
|
|
|
Post by Aerostudent on Aug 26, 2009 20:22:09 GMT -5
the auto enrich might do it. If you kept the key on, then I wonder if the auto enrich valve would see it as the engine being on, and start closing off the valve, even though the scooter is not running? Hmmm, anyone else want to try and expand on this theory?
Aero
|
|
|
|
Post by kuzikood on Aug 27, 2009 5:58:13 GMT -5
i second that aero
|
|
|
|
Post by hkelman on Aug 27, 2009 7:21:34 GMT -5
I think Aerostudent has a good thought. The more I think about the issues, a couple that I did not list in this thread, I think it coud be a carb problem. First indications were lean mixture. Replaced the jets from the original 1.03 to a more normal 1.10 with no effect. Blew out all the ports in the carb with no effect. Runnning lean at first, then with a blockage added, when the auto enrich turns off for a normal mixture, too lean to run? Key on tells the auto enrich valve the engine is running and needs the leaner mixture and so the problem is immediate. The problem is getting worse with the time to run correctly getting very short now where I used to get a couple of miles before being stranded. I will test this theory this weekend with a new carb.
|
|
|
|
Post by hkelman on Aug 28, 2009 7:12:43 GMT -5
As I understand the post from funderp47, if I do not have a headlamp on/off switch, then I do not have resistors. If the headlamps are unplugged, would that affect the running of the machine? I replaced the whole carb last evening and no good results so I think that eliminates the auto enrich valve and carb. I have a relatively good instruction set for testing each electrical component with a multimeter (ohmmeter) and will do so next. I already tried the voltage regulator and had continuity on only one set of terminals and no reading on the ohms of that terminal set indicating a very high resistance. I will test again with the better instructions before replacing. Could the problem be two or more components working against each other? Which one would be most likely to cause others to blow? Off the subject - I recently downloaded iespell plugin for explorer - works great because I cannnot spell. Wish I could say the same for the scooter.
|
|
