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Post by mickatm10 on May 13, 2016 22:43:02 GMT -5
Hi, I posted last fall about this scooter, and I got it running for as much as 40 seconds, but no longer. Then it got cold. Spring is here and it's time to work more on this TaoTao 49/50cc scooter made in China. The gas was pretty crummy, so I drained the tank and the gas hose and tried to run the clean gas through the carb, but it took starter fluid spray to get it to run. I just don't have time to take the carb apart to clean it so either 1) there's a way to clean it without that??? or 2) I'll buy a new one. Matching ones range from $18 to a little over $50. Do you think price makes a difference or are all really the same thing? I once saw a particular model of digital camera for sale online for prices between 50 and 200 dollars, the very same thing. If a difference in quality, where would low quality show itself? The only difference apparent from the photos is that the diaphragm cover on mine and some others is metal and the one on still others is black, maybe metal, maybe plastic, but it's not a part that gets hot. Even plastic should be fine. When I fear some won't match, I still think they'll screw in place, but maybe the opening to the intake manifold will be a different diameter, or other ports will be different. All of these are rated 4 stars or more. It's the 50 dollar one I wonder about especially and the difference if any between that black cover and the metal cover. ? I'm still pretty heavy, will a larger port make the scooter run faster for me? This is only 18 and in the US: www.buyatvpartsonline.com/carburetor-09-chinese-gy6-50cc-scooters-pd18j-p-11308.htmlThe one is in China but I'm certain it matches, because it has so many pictures that match: www.amazon.com/50cc-18mm-Carburetor-49cc-Scooter/dp/B004J5CJVA?ie=UTF8&psc=1&redirect=true&ref_=ox_sc_sfl_title_1&smid=A1HW0E1TRCDRAJThis one is $51 and in the US, KEIHIN brand?: www.amazon.com/dp/B01304EI78?psc=1This is $22 + 4 shipping, in the US and claim "jet upgrades Scooter Moped ATV" Upgraded jets for better starting, idling and performance. main, 32 pilot jet. Additional main jet included separately if you find that you need more fuel: www.amazon.com/Scooter-Carburetor-Stroke-Upgrades-Moped/dp/B00GURJZZI/ref=pd_sim_sbs_263_3?ie=UTF8&dpID=51PbWtwd0wL&dpSrc=sims&preST=_AC_UL160_SR160%2C160_&refRID=1GP0BKKQVBP7CCR830ZW $24 and in the US, "with Jet Upgrades": www.amazon.com/49cc-Scooter-Carburetor-Stroke-Upgrades/dp/B002QBNH9W/ref=pd_sim_sbs_263_2?ie=UTF8&dpID=51XJHUs1URL&dpSrc=sims&preST=_AC_UL160_SR160%2C160_&refRID=1GP0BKKQVBP7CCR830ZWThis is $26, in the US, says works up to 80cc and on mopeds, sold by GOOFIT: www.amazon.com/GOOFIT-Carburetor-Scooter-Chinese-139qmb/dp/B00UCY60GW/ref=pd_sim_sbs_263_1?ie=UTF8&dpID=51qBa52mI-L&dpSrc=sims&preST=_AC_UL160_SR160%2C160_&refRID=1GP0BKKQVBP7CCR830ZWThere was one other in China but I don't see it now. Any helpful advice is appreciated. Thanks a lot.
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Post by tortoise on May 14, 2016 11:18:26 GMT -5
Clean . . unless this carb has tamper-resistant fuel bowl fasteners, and you lack the resources to remove them.
Also check valve clearance. One alternative to a .05 mm/.002 inch feeler gauge is to cut a strip from the side of an aluminum beverage can.
In addition to carb issues, typical fuel system gremlins include manifold air leaks, and a deficient petcock or fuel/vacuum hoses and in-line filter.
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Post by hillbillybob on May 14, 2016 11:59:59 GMT -5
I wouldn't spend more than $25 on a new one. There are lots of us out here, running the cheap carbs that came on our China scoots, without a problem. A $300 engine doesn't need a high end carb.
I haven't needed to touch my carb in 4 years.....hasn't even needed cleaning. But, (1) I will not run gas that contains ethanol, and (2) I add 4/10ths of an ounce of MMO every time I fuel up. Scooter starts, idles, and runs just great, even after our long Western New York winter hibernations.
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Post by mickatm10 on May 14, 2016 20:54:28 GMT -5
Thanks you guys.
Tortoise, I'm not sure yet how the bowl is fastened on. I have feeler gauges.
Bob, I think the previous owner got water in the fuel. Is that related to ethanol in the fuel? It was very cloudy, like tan skim milk iirc.
And I didn't have any place to dispose of it, so it's been sitting all winter in a 2 liter plastic pepsi bottle. Last fall after three days it separated so the top 2/3rds was clear tan, and the bottom was very cloudy. Do you think the top part is useful for anything?
Micky
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Post by JerryScript on May 14, 2016 23:11:12 GMT -5
That old fuel is only good for starting fires now.
Once you have the new carb on, use some Sea Foam, one cap full per fill up for a couple of weeks, it will help clean up your engine and fuel system.
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Post by rockynv on May 16, 2016 3:48:34 GMT -5
I am not a big fan of replacing carbs without trying to clean them first. First attempt should be to add 2 or 3 ounces per gallon of Berrymans B12 Fuel system cleaner to the gas tank and trying to start it a few time letting it run as long as you can until the engine get warmed up a bit and the cleaner into the fuel bowl then let it sit overnight and try again the next morning to see how that went. Repeat this morning and night for a few days and you may see enough improvement to start riding without replacing or taking anything apart as far as the carb is concerned. The valves still may need adjustment. It has to be Berrymans B12 and not Seafoam for a remediation. Seafoam is great for mild cases and to keep thing from getting too bad but once its gone too far you have to use the Berrymans to have a chance at success. Walmart usually carries Berrymans as does Advance Auto Parts.
Ethanol absorbs the water from the air and holds it in suspension since the corn alcohol in the ethanol has an affinity with water however once the alcohol starts to evaporate or gets past its maximum saturation point it will release the water and form algae turning you fuel milky and gelatinous.
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Post by ricardoguitars on May 16, 2016 10:07:26 GMT -5
What is more expensive, your time or buying a new carb?
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Post by tortoise on May 16, 2016 10:40:33 GMT -5
Material Safety Data Sheet comparisons . . .
Seafoam per MSDS: Pale Oil 40-60% Naphtha 25-35% Isopropyl Alcohol 10-20%
Berryman's B12 per MSDS: Toluene 40-50% Acetone 20-30% Methanol 20-30% Methyl Ethyl Ketone <5% Isopropyl Alcohol <5% 2-Butoxyethanol <5%
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Post by JR on May 16, 2016 11:46:33 GMT -5
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Post by rockynv on May 16, 2016 23:40:38 GMT -5
Material Safety Data Sheet comparisons . . .
Seafoam per MSDS: Pale Oil 40-60% Naphtha 25-35% Isopropyl Alcohol 10-20%
Berryman's B12 per MSDS: Toluene 40-50% Acetone 20-30% Methanol 20-30% Methyl Ethyl Ketone <5% Isopropyl Alcohol <5% 2-Butoxyethanol <5%
Yep Seafoam like you listed is mostly Pale Oil or in other words Diesel Fuel mixed with Naptha and Rubbing Alcohol which should work when used in moderation to help keeps things lubed and clean when their not too bad. Berryman has the heavy duty cleaners in it without the large amounts of Isopropyl or Diesel Fuel which if used in heavy concentrations is not good for your spark plug or valves.
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Post by fugaziiv on May 17, 2016 11:41:39 GMT -5
Material Safety Data Sheet comparisons . . .
Seafoam per MSDS: Pale Oil 40-60% Naphtha 25-35% Isopropyl Alcohol 10-20%
Berryman's B12 per MSDS: Toluene 40-50% Acetone 20-30% Methanol 20-30% Methyl Ethyl Ketone <5% Isopropyl Alcohol <5% 2-Butoxyethanol <5%
Yep Seafoam like you listed is mostly Pale Oil or in other words Diesel Fuel mixed with Naptha and Rubbing Alcohol which should work when used in moderation to help keeps things lubed and clean when their not too bad. Berryman has the heavy duty cleaners in it without the large amounts of Isopropyl or Diesel Fuel which if used in heavy concentrations is not good for your spark plug or valves. This is great info that I did not know. Thanks! Matt
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Post by seamus26 on May 18, 2016 19:14:44 GMT -5
I would certainly try cleaning your carb. I mean, everything you learn to do on your own you will never have to pay someone to do again.
I know on my ZNEN I have to pull the seat tub, but really it's a half hour job. Even if you don't have the time, make the time. Take pictures as you take it out and apart and put everything back the way it came out.
I even did a complete rebuild on my old Vespa carb sight unseen. There are lots of videos online and lots of people willing to help.
Worst case, you could buy a new one and after you install it tinker with the old one. It's the heart of your bike; good to know how things work.
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