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Post by hitshane on Nov 14, 2014 16:07:26 GMT -6
So, I was having problems with the enricher making the scooter too rich (imagine that) to run. I took my old Enricher and broke the needle off. I kept the spring and the brass cylinder with the needle through it. I then cut the cord off of the enricher that I broke the needle off of. I found a round piece of metal that fits in the hole of the carb were the enricher goes. I then cut the spring in half so It would keep the needle pressed in all the way, but not be too long. I placed the metal circle over it and into the hole. I then just screwed down the enricher over it to keep the metal inside which is holding the needle all the way in! She idles and starts now...
I took it for a test drive and right as I was about to turn on my street it died!?!? I was able to start it, but it wouldn't idle. Pull out the seat and guess what. The Fuel Mix screw fell out. So I pulled one out of my old carb and used the spring as well. It was still loose so I applied 5-6 rounds of Teflon tape to the threads. Now the Fuel Mixture screw is way more sensitive than it was before. I'm guessing it didn't have the spring in it and the threads are a little larger than the screw. Long story short she idles great and the entire throttle range is perfect!!!
Thanks again for all of your help.
-Shane
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Post by hitshane on Nov 14, 2014 15:41:57 GMT -6
I just put on a new carb and mine did just what you said. The mix screw fell out of the carb  Look for things out of place before you start tearing things apart... -Shane |
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Post by hitshane on Nov 13, 2014 11:14:01 GMT -6
Great! Good job now just the bottom end a little to fat so get a 30 pilot. Raising or lowering the needle will not help for the low end the needle comes on around 15-20mph. Alleyoop Thank you for all of your help! I will order a 30 and post back when I have it installed 
-Shane
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Post by hitshane on Nov 13, 2014 10:47:44 GMT -6
Yep Pilot to big as well as main jet. I found an 81 main jet. I messed with the needle and found the middle to be the best spot. Mid and high range pulls hard and it goes fast! I am still rich on the bottom though and cant find a jet smaller than 32 locally. What size do you think I should order?
-Shane
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Post by hitshane on Nov 12, 2014 17:59:40 GMT -6
Yep to rich loosing power Should I drop the pilot jet too (32) or just the needle (middle notch) and main (91)? I have to turn out the mix screw a lot. It looses RPM's when I put the mix screw where I think it should be at 2.5 turns out... Best spot I found for mix screw is about 1 turn from where it stops counter clockwise...
-Shane
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Post by hitshane on Nov 12, 2014 17:25:52 GMT -6
So, I bought a new carb for $23 from a supply store close to me. It is the 20mm with the metal top. The jets it came with are not numbered. I tried to run it as is and it wouldn't start. I pulled the jets from my carb and installed them. Started right up! I messed with the mix and idle screw and got it as good as I thought I could, but it seams too rich at idle even with a 32 pilot jet. Scooter runs smooth through the whole range, but it lacks the responsiveness it had before. I think the old carb had an air leak or something, then some of the passages must have got gunked up. I was probably running lean before and boy did it go! So, being as the dealer I got the carb from tuned it with that problem, my needle and main are most likely too rich. It has a 32 pilot and a 91 main jet with the needle in the middle. Should I lean out the needle a notch and drop the main jet to an 80 or an 85 (or was the scooter supposed to be this sluggish the whole time ? Any recommendations would be great! It is a 2013 TaoTao 60cc... -Shane |
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Post by hitshane on Nov 7, 2014 17:09:17 GMT -6
I cleaned out the carb again with air and blasted every nook and cranny. I reran the fuel line without the petcock and installed a manual shutoff and capped the vacuum line. Drained the fuel and got fresh gas. It fired right up but wont idle. I have to hold the throttle about halfway and it just sputters and does a rat tat tat tat rat tat tat sputtering like. It almost sounds like a 2 cycle dirt bike. It is blowing white unburned gas out of the exhaust. Everything is exactly how I have had it since I got the new carb installed by a local dealer. They installed the jets for the bike and it ran great except for the 3 times it has had issues. Cleaning it and fresh fuel have always fixed the issue.
I will look for a different carb. I'll go for your recommendation of a 80-85 main jet. There must be something wrong with the carb I have that is an intermittent problem. Either that or the engine has a valve that sticks sometimes or something. The carb does not have that many parts and I have had it opened up 3 times now in the last day. Nothing is missing or out of place.
Thank you guys for all of your help so far!!!
-Shane
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Post by hitshane on Nov 6, 2014 19:04:12 GMT -6
If I let off a little bit while its braking fast, it wont catch up or do anything right away. If I catch it right when it starts it will smooth out where im holding the throttle. Sometimes pumping the throttle does nothing just complete loss of power. It never pops or surges, it just loses power and the RPM's drop...
Last time it did this I cleaned the carb and thought I had bad gas and drained it, then with new gas it worked fine. That happened two times and now a third. I only fill up like once a month. I drive the scooter locally every day to and from work 2 miles round trip. What are the odds I got bad gas 3 times out of the last 5 months?
I took my pilot off tonight, because after I replied to this post today, it was idling like crap sounding really rich and low, so I took off the carb. The pilot jet was clogged and long story short I grabbed a new one from a local shop. I put it on and its idling great, but now it wont rev it just dies. I feel like if I changed the gas out it would work fine. The fuel was fine for the last week since I filled up and is still full. I really don't get it. Everything along the fuel system is new. If changing the gas doesn't work out tomorrow I'll just put it up until I get a new carb, because even if I get the bike back running like I have the last two times, I will still have the WOT fuel issue...
-Shane
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Post by hitshane on Nov 6, 2014 14:09:48 GMT -6
32 Pilot jet, 91 Main jet. 60cc, 20mm carb. Stock (derestricted) airbox and stock exhaust.
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Post by hitshane on Nov 6, 2014 11:58:59 GMT -6
So, I have not been on any long rides as I work about 9 blocks from my house. I went to buy my wife an anniversary gift today and it started losing power again. It feels like the brakes are engaging or something is holding the scooter back. I have to let off the throttle to get the power back. I am fuel starved! I took off the gas cap and continued on my way and it still did it after a few minutes at WOT. I made it to the jewelry store and on my way home it started doing it again. I pulled over and opened my stock air box and put the air restrictor back in hoping maybe this would solve the problem. Nope, 2 minutes later it was doing it again. I have no vacuum leaks and the fuel flows fine with a suction test on the petcock. I have pulled off the carb before and the float is as high as I can set it. The fuel filter is massive and probably holds a half a cup of gas in it. The entire fuel system is downhill from the tank to the carb. Could the petcock be not big enough? Power band is great from idle to WOT. Scooter starts and runs great otherwise. Gas consumption is great. The plug looks fine. The valves have been set twice and checked twice since then with no change in gap. I find lots of these posts about fuel starvation and not really any solution besides blocked vent lines/caps, bad fuel petcock, and dirty carbs. I have none of these problems. Losing power on a 45MPH road in traffic is no fun... HELP!
-Shane
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Post by hitshane on Sept 18, 2014 11:28:05 GMT -6
So,
I am driving like a bat out of hell to work along the same road for about ten miles. Half way either way my 60cc taotao starts to lose power. Lowering the throttle fixes the loss of power. It's not over heating and plug chops look great. It starts great and takes off like crazy. The idle is rich, the mid is a little lean and the top end is rich. Makes those takeoffs great! After 4 blocks im at 45MPH and it creeps a little faster where the needle is on the left turn signal and the tran's whine's pitch gets higher.
I have a new carb with the floats double checked. I have new fuel and vacuum lines and a new petcock, with a huge fuel filter. I blasted the fuel cap with ether and air and that is the only vent for my tank. It has a keyhole in it. I have the air filter clean and the air plug pulled out. I have the best spark plug and the valves are between .003 and .004". I have stock airbox and exhaust with some Pirelli Tires.
The way the fuel cap turns with a key to unlock it I can't see a good way to drill a hole into it. Do I need another fuel cap? With a syringe at the petcock vacuum line the fuel pours out just fine. The engine response is great and it has no surges or backfires of any sort. Should I put the airplug back in the airbox and see if the increased suction will help? Should I get an after market fuel cap and drill a large hole in it?
Can someone with inadequate fuel delivery problems chime in please. The lines and filter are full of gas when I get home. I don't see any vacuum leaks. I checked with starter fluid.
-Shane |
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Post by hitshane on Aug 11, 2014 16:55:53 GMT -6
Do not buy Exxon/Mobil Fuel. They also make Chevron and sell to Rally and Racetrack. They have been selling bad fuel for several months and it has a gum like material in it causing catastrophic engine damage due to sticking valves. I have got it twice now in the last 2 months and had to do fuel tank, lines, and engine flush with SeaFoam. You have been warned and make sure you are keeping your receipts incase you blow your engine. Lawyers will be standing by soon as the consumer reports are piling up fast.
-Shane |
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Post by hitshane on Aug 9, 2014 12:15:56 GMT -6
Got to say your doing something wrong, You said they were originally both set at .005. Then you set them to .0035 and .0045 and they were noisy??? NOT POSSIBLE BRO that is a tighter gap than the .005 setting, so the .005 setting would have clattered even more. Alleyoop Alleyoop, I do want to say that my scooter is running great now and I did leave my valves set at .003" In and Out. It had never been set this tight and after a couple hundred miles it settled in nicely. Thank you for the direction. -Shane |
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Post by hitshane on Aug 9, 2014 12:14:46 GMT -6
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Post by hitshane on Aug 9, 2014 12:07:13 GMT -6
Learn to tune your mix screw, hot engine, and by ear... The weather will affect the fine tune. Make sure your stock air filter is nice and wet with oil (pour a lot on it and wring/squeeze out).
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Look for things out of place before you start tearing things apart...
