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Post by blarboose on Jul 1, 2014 23:57:55 GMT -5
When I first got the bike, it would run fine until I got up to about 4700 RPMS, then it would lose power and wouldnt go above 3900, maybe 4000 RPMS unless I let go of the throttle for a minute, then accelerated again. It would run fine, but if I started going up near 4700 RPMS again, it would lose power like that again. I couldnt get it to go above 40 MPH on a flat surface. (Maybe 38MPH on an incline)
Did some research, ran some seafoam in it, and saw significant improvement. Now I could get it up to 50MPH, maybe 52 or so, and it didnt lose power at higher RPMs. However, while it didnt lose power, it also still wouldnt go over maybe 5200 RPMS or 50MPH.
Then so today I rode my scooter out to the store to run some errands. For this, I had to go on the highway pretty much the entire ride. Most of my trips have some highway travel, but not much. I needed to go 40MPH pretty much the entire ride. No problem right? Wrong. The bike kept losing progressively more and more power. At first, it would struggle to keep at 40MPH. Then it wouldnt go more than 35. Then down and down till eventually, I was barely making 15MPH. I put on my hazards and pulled off as soon as I could. Looked at what I could, tested the voltage in the battery, etc, everything seemed fine. Let it rest for a few minutes, then got back and on tried to continue my ride. Slight improvement, but still couldnt get more than 20 maybe 23 MPH if I was lucky. Same thing the whole way home.
Got home, took out the Carb, cleaned it with Gumout Spray. Hooked everything back up. Now, it just wont start. The battery is fine (Ive tested it with 3 different batteries and checked the voltage on all of them) the tank is about half full, and it does have a bit of seafoam in it from the last time I added some. Ive tried adjusting the idle screw and air mixture screw. Neither seem to do it. It just plain will not start for, what I can only assume, is no reason whatsoever at all. -_-
Anyway, as best I can tell, everything is hooked up the same as it was before I cleaned the carb, and the stupid thing just refuses to start.
Suggestions?
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Post by dragono on Jul 2, 2014 0:05:54 GMT -5
May have flooded the engine a bit. Try taking carb off and trying to start it for a few seconds to remove excess fuel that may be sitting in there. (I did that today with my 2 stroke) Also try spraying starter fluid directly into intake after running it to make sure its not flooded. If she starts up for a second then you have fuel flow issue. If not then issues may be slightly bigger, I assume compression is good but never hurts to check. Maybe weak spark? Never hurts to check those two things, and they take like 5 minutes total to do.  Good luck let us know. |
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Post by blarboose on Jul 2, 2014 0:14:28 GMT -5
Do you mean taking the carb off entirely, or just disconnecting the fuel line, or...? Im still a bit new at all this, so please forgive my ignorance.
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Post by blarboose on Jul 2, 2014 1:39:44 GMT -5
UPDATE: Took the carb back off to check everything, and was surprised to find that it was totally empty.
When I took it off the first time, a bit of fuel drained out of it, and I could feel it sloshing around inside before I drained the rest. This time, it was totally empty.
I took the carb apart again, checked everything, made sure it was all put together right, and put everything back together... still nothing. Im guessing its the same problem; somehow, no fuel is going into the carb. I have no idea what could be causing this. Ideas?
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Post by dragono on Jul 2, 2014 12:18:25 GMT -5
GOOD NEWS. This isnt a huge issue. Either your fuel pump doesn't work any more. (cheap to replace) The vacuum line that creates the suction that actuates the pump is old and crack thus no longer creating a vacuum. (even cheaper to replace) Or your float bowl isn't going down all the way. (or float needle is stuck up) To test your fuel pump (looks like this www.ebay.com/itm/like/270996666513?lpid=82 ) (or this www.ebay.com/itm/like/161268311353?lpid=82 ) take fuel line off of carb. Also take vacuum line off of intake (this thing www.scooterparts4less.com/Moped_Web/GY6_150cc_Manifold.jpg ) If yours has two lines coming off intake its usually the one on the left. Take that line and suck on it with your mouth. If fuel comes out the hose that goes into your carb then your pump is good. If not then you found your problem. Don't worry fuel wont get in your mouth. Atleast its never happened to me.  Replacing the vacuum line is easy. And just look up a youtube vid of how to replace float bowl if thats the issue. |
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Post by blarboose on Jul 2, 2014 16:53:32 GMT -5
Ok, so I took the fuel line and vacuum line off like you said and tested it, and fuel did come out, so the fuel pump isnt the problem. Also, when I took the fuel line off, some fuel did drain out of the carb. However, it still wont start. What should I do now? The fuel is getting there just fine, but it still wont start... Also, Im like  % sure I have them hooked up right, but on the off chance I dont, could someone possibly post a diamgram or picture showing the correct arrangement of the different hoses and tubes and where they connect to the carb? |
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Post by alleyoop on Jul 2, 2014 17:20:37 GMT -5
Better yet you post pictures of the CARB and hoses. Then we can see how you have them connected and correct them if they are wrong.
If you took the FUEL LINE off the carb and put it in a cup and just crank it and fuel streams out that would verify that the Fuel Petcock(Gas Tank is higher than the Carb) or Fuel Pump(Gas Tank is Lower than the Carb) is working.
If so then I would say You Need to Adjust the Valves.
Alleyoop
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Post by blarboose on Jul 2, 2014 17:58:44 GMT -5
Ok, took a photo of each side of the carb. This is how I have it hooked up currently. I also took a video of me trying to start it with the fuel line going into a cup. Fuel did indeed come out, though I dont know if its too much or too little. If someone can tell me if it needs to be more or less or whatever, I can mess with the adjustment screw. i.imgur.com/QSKWq3E.jpgi.imgur.com/PHzIkoh.jpgEDIT: Here's the video; |
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Post by alleyoop on Jul 2, 2014 19:27:53 GMT -5
Ok you have the Fuel line on the wrong connector: SWAP THE GREEN ARROW HOSE AND BLUE ARROW HOSE: The Blue Arrow hose is the CARBS DRAIN HOSE The Green ARROW hose is the FUEL HOSE That is why no gas was in the carb. The hose with the WIRE AROUND it should have a SCREW on the end of the hose. Alleyoop i.imgur.com/QSKWq3E.jpg |
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Post by blarboose on Jul 2, 2014 19:33:31 GMT -5
Now Im even more confused. I originally had it as you said, with the green arrow hose and blue arrow hoses swapped positions, and I had the same problem Im having now. Once I put them as they are in the photo, I would get gas into the carb, but still not start.
I will swap them as you said and see what happens.
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Post by alleyoop on Jul 2, 2014 19:36:38 GMT -5
Well what you want is THE HOSE YOU TOOK OFF TO PUT IN THE CUP IN THE VIDEO THAT IS THE FUEL HOSE.
The bottom of the carb is to TO DRAIN THE CARB BOWL.
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Post by alleyoop on Jul 2, 2014 19:40:28 GMT -5
Now answer this question: THAT HOSE WITH THE WIRE WRAPPED AROUND IT DOES IT HAVE A METAL END ON IT WITH A SCREW ON THE END OF IT? LIKE THIS:  |
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Post by blarboose on Jul 2, 2014 19:54:28 GMT -5
I swapped the hoses like you said, still no start. Yes, the tube with the wire wrapped around it has that screw thing on the end of it, on the end opposite the carb. EDIT: grabbed a couple pictures of the screw thing on the end in case it helps. i.imgur.com/PSByWf1.jpgi.imgur.com/mrE3HLn.jpg |
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Post by alleyoop on Jul 2, 2014 19:59:02 GMT -5
OK, the hoses are CORRECT NOW SO DO NOT CHANGE THEM. Now the carb should fill up with fuel.
TO TEST LOOSEN THE SCREW ON THE END OF THE HOSE WITH THE WIRE WRAPPED AROUND it and put a cup uner it to catch any fuel AND CRANK IT OVER and FUEL SHOULD KEEP ON COMING OUT AS LONG AS YOU CRANK IT. If fuel keeps coming out of the drain hose now we know the carb is getting fuel.
NOW TIGHTEN THAT SCREW BACK UP.
Alleyoop
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Post by blarboose on Jul 2, 2014 20:10:00 GMT -5
Tested it as you instructed. Loosened the screw, cranked it, and fuel did indeed flow out for as long as I kept cranking it. Tightened the screw back up and wiped up any fuel that dripped onto stuff.
Still cant no luck with starting after tightening the screw back up.
(BTW, just wanted to take a second and say that I really appreciate all the help Im being given. Im still new at this so having a place like this to get advice is really great.)
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% sure I have them hooked up right, but on the off chance I dont, could someone possibly post a diamgram or picture showing the correct arrangement of the different hoses and tubes and where they connect to the carb?
..BAD TO THE BONE..