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Post by jdmsoldier on Oct 3, 2013 21:41:17 GMT -5
This felt to me like it could have been super dangerous if there were cars behind me. I was going uphill on an 35mph overpass, but the slope wasn't very slanted at all and I wasn't struggling very much at all either.
So all of a sudden I'm going up and my scoot just sounds like its struggling and dies like it is out of gas or power. There were no places to stop on the side except for grass, and had to push my bike off the road onto the grass then push the bike up the hill on it to the gas station which was at the
very top. Prior to this I could not get it to turn or even sound like it was turning. The electric start had a less powerful noise and sounded different
and weaker.
So I am now very embaressed pushing my moped up the hill out of breath and my heart is pumping. The gas station clerk asked me if I was alright. Again I try to put in gas and it spits out again, don't know how much of the $1.01 actually went into the tank. So after I put in gas this did not fix
the problem that I thought it was in. I parked it in the shade and tried again several times, then tried kick start which did absolutely nothing.
I looked around for the oil stick and couldn't find it anywhere, omg where the is it on this thing? Anyway I thought it might be out of
oil, but there was no oil light.
I waited for a few more minutes then tried again and she started up, I then put her on kickstand and she died out, then started her again and gave it a brief amount of gas and let her idle for a minute. All of a sudden it seemed fine and I drove her out a mile to walmart, did my business there and then drove a mile back home.
I had a similar problem over a week ago, only it happened in my garage while trying to warm it up, and dont know what it is and dont know anything about scoots so im clueless.
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Post by JerryScript on Oct 3, 2013 21:48:49 GMT -5
Could be bad gas or fuel lines decomposing. Put some SeaFoam in you gas tank, and if you haven't already, change all your fuel lines.
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Post by jdmsoldier on Oct 3, 2013 22:21:36 GMT -5
Thanks Jerry, I never heard of it, but I googled it and read what it does. I'll give a try when I go buy some. Thank you.
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Post by rockynv on Oct 3, 2013 22:33:16 GMT -5
Were you with the throttle pegged or close to it? When you are on a long incline the engine does not make a good enough intake pulse to keep the vacuum operated fuel pump operating or the intake vacuum drops so low that it can't keep the petcock open and you simply start running low on fuel getting pumped into the carbeurator bowl. Your engine will start running lean and overheating and will eventually stall out due to fuel starvation or a soft sieze or possibly both.
Seafoam or even better Berryman's will help keep the fuel system clean and flowing freely however sometime you just need to back off the throttle just a nudge to close up the throttle plate in the carb so that there is enough of a flow restruction to increase vaccuum in the intake manifold to keep the fuel pump operating or petcock open.
Note that if you keep doing this you can burn your valves or a hole in the top of the piston.
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Post by jdmsoldier on Oct 3, 2013 22:37:45 GMT -5
Were you with the throttle pegged or close to it? When you are on a long incline the engine does not make a good enough intake pulse to keep the vacuum operated fuel pump operating or the intake vacuum drops so low that it can't keep the petcock open and you simply start running low on fuel getting pumped into the carbeurator bowl. Your engine will start running lean and overheating and will eventually stall out due to fuel starvation or a soft sieze or possibly both. Seafoam or even better Berryman's will help keep the fuel system clean and flowing freely however sometime you just need to back off the throttle just a nudge to close up the throttle plate in the carb so that there is enough of a flow restruction to increase vaccuum in the intake manifold to keep the fuel pump operating or petcock open. Note that if you keep doing this you can burn your valves or a hole in the top of the piston. Yes I had throttle to the max just like everytime I go uphill and yes I hear a doo doo doo sound repeatedly when I do this as it wont go any faster. So your'e saying I should not do this otherwise it will burn out the piston? |
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Post by jdmsoldier on Oct 3, 2013 23:37:16 GMT -5
Okay so it's around 6:30pm and I just got back from O Reilys and bought a can of SeaFoam, the guy at the counter said to use the whole pint and I didn't think that was right. I'm only suppose to use 1oz per gallon right? I have a 1.6 gal tank. If anyone can recommend when I should use it, like while it is sitting cold, or should I use it then immediately ride? Plan on doing this tomorrow since it's late already. Also I have nothing to measure an ounce, would it be alright if I just blindly pour some in the gas tank? I currently don't know where the oil is yet, so putting it in the gas is fine for now right? Thank you.
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Post by JerryScript on Oct 3, 2013 23:49:38 GMT -5
I have read a lot of different opinions about how much to use. Many say they put a capfull in with each fill up, others do it every other fill up or once a month, others every few months. I personally just add a capfull with each gallon.
You do not add SeaFoam to the oil, just the gas.
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Post by skuttadawg on Oct 4, 2013 1:33:43 GMT -5
A capfull or a sip more is to keep it clean . For those that need cleaning use more . Seafoam is great I have used it for years with only good results . It could have gotten hot if the temp is warm and you were riding it hard as stock most are too lean which also can make it run hot since it could use a larger main jet to deliver more fuel which makes it perform better and not run as hot . Here is a plug chart that you can compare yours with to get an idea on how the jetting is www.4secondsflat.com/plug_chart.html . Is it stock ? Most of us install a larger main jet , a NGK iridium sparkplug , replace the vacuum and fuel hoses and fuel filter and go with lighter or heavier roller weights to tune the CVT . How many miles on it ? Have the valves ever been adjusted ? All 4T will need this done at least once with some requiring it out of the crate . They valves often get too tight or do not open up all the way and it does not allow enough fuel and air into the cylinder . A lil tight it may start and run but stall after the engine gets warm . Too tight and it may not start at all . Too loose like mine got and it starts and runs but wants to stall just before coming to a stop . Reset and it was new again . Here is a valve adjustment guide www.scooterforumonline.com/index.php/topic,1720.0.html |
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Post by urbanmadness on Oct 4, 2013 8:01:48 GMT -5
sounds like a couple of things.... Is your tank in the floor of the scoot? I have a 150 that I run open throttle alot and even with a mukini fuel pump it will sometimes starve (on overpasses at full throttle mostly). Do a valve adjustment, replace the fuel and vacuum line (take a piece of each to the parts store) and fuel filter. When you replace the fuel and vacuum lines, keep them short leaving just a little extra (maybe 1" or so) so if need be you can cut an end off but no too long, as this effects vacuum supply to the pump. Fuel lines that are too long can cause fuel foaming and vapor lock. Remember, Manifold pressure rises when the throttle is all the way open (closer to atmospheric pressure) and you will have little or no vacuum for the pump. One technique and a way to trouble shoot the problem is to find the hill that makes it act up and run up it hard but then open and close the throttle slowly and then see if it makes it up the hill that way.
Another thing I've noticed is if the belt starts to wear of all things, my scooter does it more often. I think it's because it has to work harder so it uses more fuel. A fresh belt also seems to help MPG and top speed. So keep that in mind if you have a cheap chinese belt in the scooter.
Then after everything is done.... get some chicken bones.... and a voodoo doll... and say some magic incarnations, while waving a feather over the scooter because sometimes working on these scooters, you need to know magic.
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Post by rockynv on Oct 4, 2013 21:49:23 GMT -5
For general maintenance use 1/2 to 1 ounce per gallon of fuel. If you are having sluggishness and some minor performance issues then use 2 ounces per gallon while for remediation when you are having stalling/starting issues use 3 ounces per gallon of fuel. You use the whole 16 ounce can on a full size car, van or pickup truck with a 15 to 20 gallon fuel tank.
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Post by jdmsoldier on Oct 5, 2013 0:18:54 GMT -5
I put about an ounce of seafoam today and took her out about a mile to the store and to get some food. Drove her back a mile home, and wanted to ride some more and wanted to buy something else from the store.
So, I went to the store and afterwards instead of going home I took her for a drive, and while I was heading back home it happened again, but this time it was dying gradually over a period of a minute. Today I went easy on her all day and didnt over gas it or anything, however during my second ride I had her on high beams cause it was getting late. So this started happened near a stop to make a left turn. I was able to stop at the light for less than a minute, but could hear it dying, and I made the left turn but died out again and i pulled over in the middle of the road on the grass. I tried to start her up again, but wouldn't, after about 10 minutes, a chick pulls up in her pick up truck and tells me to just throw it on the bed and shed drop me off. I don't like accepting help from people I don't know and am weary of do-gooders, cause in the past they usually want something in return. Anyhow we talked about the bike for a few minutes and then went back to it. She said maybe the cable was loose on the kill switch and to switch it back and forth. It started up, and I rode for about 1 minute till it died again. I was halfway home and the way back was half even and half downhill, so I didn;t have to struggle to get it home, and on downhill I let it roll in the bike lane.
When I bought the bike, it just came out of a tuneup the very same day, and I saw the receipt with all the things done to it, like oil change/flush, carb clean, and some other stuff I can't remember. It had over 1,500 miles on it, and now it reads 1,700, but Im positive that its impossible cause i only ride about 2-3 miles a day, and only a few times I took it out for about 30 miles. I only put in about $5 gas in it total and this is a 60mpg scoot so I know it doesnt need an oil change. The one thing I did notice today was just a little smoke from the exhaust, but just a little while I was stopped, and usually I don't notice any.
Im close to broke right now, I wonder what it is, and I read the advice on change fuel lines and stuff, and wonder if that is the case. I hope they are cheap and hope I don;t touch the wrong things. My owners manual doesnt really help much, and someone said they sell like repair books. I guess maybe I should just watch some youtube videos or like someone suggested and read some of the other forum posts Besides the fact that the gauges arent working so good, and I have to warm her up everytime before I take her out for a ride so she idles normally, I only noticed one other thing and thats the first day I rode it home I saw the exhaust tip had spat out something sticky like oil on this ocarina looking thing its connected to. edit: its 2 hours later and I started it for literally a second and then it cut off. Tried to start again and nothing. Looks like im out of a ride for a while. I looked online for a repair manual to buy or look at online for jonway but can't find anything but vespas, hondas, etc. Am about to watch some youtube videos on some stuff. I guess I have to dedicate my time to fixing this myself for now cause I dont cant spare any money for a shop repair. |
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Post by jdmsoldier on Oct 5, 2013 22:55:12 GMT -5
I haven't touched my scoot today at all, and spent last night watching instruction and how to videos on valve adjustment and how to fix/replace the fuel sensor. As far as the fuel sensor goes it seems like a moderately easy fix, but after reading the valve adjustment guide and watching 2-3 videos on it, I feel I need to study more on it before I start on it. I still need to
learn more about the fuel lines and how to change them properly.
I know the fuel sensor should be the last of my worries on my to-do list. Any other advice like on what to start on first,
the fuel lines or valve adjustment would be great, or any tips before I start. Thanks.
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Post by jdmsoldier on Oct 6, 2013 22:19:36 GMT -5
I don't know what size feeler gauge to buy, my owners manual doesn't say anything about it, so I don't know the size. Is there anything else I can do to find out what size?
EDIT:
Well I was going to start working on my bike, and I first wanted to make sure that gas wasnt the reason why It wouldnt start. I stuck a stick in the tank and pulled it out and there was nothing on the stick. I got a gas can and went to the gas station and put 6 bucks in it which is a little less than 1 1/2 gallon. Put it in the tank and was amazed to see almost all of it go inside, and accidentally over topped it, so gas started spilling out from the top as well as some king of hose. After I let the gas dry and wiped it off I started her up and warmed it up and took it for a test drive.
My initial thought was that the pump at the gas station, is pumping gas too fast and I think the entrance to my tank is a bent line or something so thats why its spitting out gas although it isnt full of gas. I love my moped but i hate it too.
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