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Post by gregory on Oct 26, 2014 20:53:27 GMT -5
I just purchased a 150cc Chinese scooter. I've had several others so I'm somewhat familiar with GY6 operation and maintenance. Scooter was not running. Original owner started having problems after replacing hoses. As I suspected he had vacuum leaks all over b/c new hoses were not snug. Fixed it up, poured some gas in card and it fired right up. But when I took it out for a ride my top speed was only 30mph or so and very little power.<br><br>Previous owner made comment about maybe not hooking emissions control stuff back up correctly. I've never had a scooter with any emissions controls so this is brand new info for me. Below is a schematic of the existing setup.<br><br>Question 1: Is it possible that if he reversed the hoses on Canister #3 that that could be the problem?<br><br>Question 2: I was confused that of the 5 spigots on Canister #2 that only two of them are used. Is something not hooked up that should be? <br><br>What does Canister #2 do? <br><br>What does Canister #3 (much smaller) do?<br><br><img src="http://images.craigslist.org/00z0z_jjRQjRHfmox_600x450.jpg" title="image 1" alt="image 1" style="width: 503px; height: 450px;"><a href="  "><br><br><br><br>Schematic of my Scooter Emissions Controls</a><br><img src=" " alt="" style="max-width:100%;"><br><br>Thanks for any help or suggestions for my performance problem!<br><br><br> |
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Post by scooter on Oct 26, 2014 21:35:54 GMT -5
I just purchased a 150cc Chinese scooter. I've had several others so I'm somewhat familiar with GY6 operation and maintenance. Scooter was not running. Original owner started having problems after replacing hoses. As I suspected he had vacuum leaks all over b/c new hoses were not snug. Does canister 1 look like this:  If so, it's probably a fuel filter. Next: The valve cover has a line to let out pressure to the air box Next: Each canister that works on a vacuum should have three or more hoses. The fuel pump or petcock has fuel in fuel out vacuum line to run the pump. If you have the big hose going from the valve cover to a canister and then to the air intake tube or box then it should also have 1 vacuum line to it, to operate it. so that's valve cover big hose to canister big hose from canister to air intake or air box a vacuum line to operate it other holes are vents you may also have a vapor recovery canister from the top of the gas tank line from top of tank to a canister line from canister to air box, i think and a vacuum line to operate the canister like you, I have two intake nipples for vacuum lines. i hooked up one side to the fuel pump only. i hooked up the other side to the other canisters with "y"s or "t"s. |
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Post by alleyoop on Oct 26, 2014 21:37:06 GMT -5
Ok I re-drew and erased some lines and what I would do right now. Alleyoop 1. At #1 disconnect the hose from the little canister and put a fuel filter on the end of it and lay it somewhere on top of th tank. That is the Gas Tank Vent hose. Then disconnect the hose from the Charcoal Canister for the Gas tank vent at #2 and plug up the connector on the AIR BOX now you can pull the little canister and big charcoal canister #2 off and out. 2. Now disconnect the Valve cover Vent from Canister #3 and put a fuel filter on the end of it and zip tie it higher than the valve cover. Now disconnect the Vacuum hose on canister #3 and throw that out. 3. Now Look at #5 USE THE "Y", Take the "T" off and replace it with the "Y" connector one going to the ACV valve on the cable side of the carb and the other part of the "Y" connector to your PETCOCK. Give that shot The other emission is your PAIR system and you can also take that off you will need a Plate to cover the hole in the head like in the second picture.   |
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Post by gregory on Oct 27, 2014 6:57:53 GMT -5
Thank you both for your replies. Alleyoop, after making the initial post and before reading your response I actually tried your suggestion (#5) and the bike would not start. If I gave it a good bit of throttle while cranking it would start but would stall at idle. I managed to take it for a ride in this configuration but there was no increase in power or top end speed. What I found was that in the original is that the vacuum line is sucking in air like crazy and apparently needs it to keep idling??? That vacuum tube is pulling in lots of air through Canister #3. When I would disconnect the vacuum hose to Canister #3 and let it hang free the scooter would run and idle, etc. just fine (of course still with the power problem and only top speed of 30pmh). It's sucking air like crazy through the vacuum hose that was connected to Canister #3 and the moment I plug the hose's intake with my finger the engine stalls.
What are your thoughts on this scenario?
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..BAD TO THE BONE..