GY6 Carburetor Inspection, Problems, Removal, & Adjustment 

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@@electronicsNmore my 150 scooter has carb issues I do my own but this is stumping me the diagram is wet with fuel I put a bigger main jet runs like 💩. I'm putting in a carb rebuild kit the whole anchalota. Diagram, needle, floats, etc. All of a sudden starting running like 💩. Rebuilt the entire engine crankshaft, starter clutch etc. Ideas?! 😃

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+Jimmy G.B. Johnson You're welcome Jim

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+HelixObscura You're welcome!

+electronicsNmore - Question. Is there a way to remove the drainage line (the one with the coil) from the carburetor? I tried releasing the clamps but discovered that there was a black line running under the coil, and this line did not seem to be able to be pulled off like the rest of the lines. Thanks!

HelixObscura They come off the barb.

+electronicsNmore - Ok, got it. Thanks again!

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Unfortunately it can be many things. Bad vacuum line, cracked intake manifold, faulty carb, fuel enricher, or valve adjustment,

Please refer to my GY6 troubleshooting video. Thank You!

Watch my GY6 valve adjustment video.

@@electronicsNmore I have actually adjusted the valves on my scoot several years ago in 2012 shortly after I got the scoot.but I will watch the valve video. Im sure it will be very informative

Possibly the enricher.

It shouldn't be any problem installing. Make sure you're installing it correctly.

actually my petcock has two lines total. one is fuel

I'm sure you'll be able to find pictures online. They're all different. In the video, the hose pinch tool is on the fuel line in.

Scooter sold in 2015. Did you look in the video description area of the video that showed the Vreg I made? There may be a link.

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Yes, all the GY6 carbs are similar. There are many GY6 carbs to choose from on Ebay. :-)

+sean crawford Hi Sean. I sold my scooter when I moved. Unfortunately I cannot check for you. Are you sure you cannot see that detail in the video? I thought it moved free.

sean crawford check to make sure your carb jets are the right size

+Jonathon Myers Hello John. If your scooter has a fuel filter installed, it should be on the fuel line between the gas tank and carburetor. If you are not getting any fuel, then you may have a faulty petcock(fuel shut-off valve). Try bypassing that valve. You will see a vacuum line connected to it along with the IN/OUT fuel lines. Thanks For Watching! Be sure to share my videos with others and rate thumbs up.

electronicsNmore Nem gindoltam de jo igyis

I mean 1st i will decrease the idle, then 2nd increase the mixture screw to the maximum, Then 3rd increase the idle?

Been a while since I made this video. I should have explained everything in the video. Thanks for watching!

Always mark things before taking them apart. You should be able to see where the lines go in my video. Thanks.

unfortunately I can not see the lines from this video

+Andrea Ferrario Google search gy6 carb hoses

if I wrote to you .... it's because I have not found what I was looking

+Andrea Ferrario Unfortunately, because I have over 350 videos on this channel and many viewers asking questions, I'm unable to offer my viewers special assistance in troubleshooting problems. I only answer one or two questions and that is all. I can assure you the information you're looking for is online. Thank you

Kevin Stearns Save your money buying an aftermarket carb. I have 13,500 miles on my 150cc scooter, and the carb has been just fine.

You didn't buy the exact replacement. You can always plug a vacuum port.

electronicsNmore what do you mean?

+STFU768 I guess I don't know what you meant. Explain much better. Thanks

electronicsNmore so the manifold vacuum on my new carburetor is covered up with plastic, not cap but actual plastic fused to the nipples.On my old carb there was a hole in the manifold vacuum, so I'm just wondering if I should drill through the plastic or not because the vacuum line isnt complete when its covered

+STFU768 Something does not sound right. You need to connect the vacuum line to the carb. Better inspect it much closer. Contact the seller.

Why bother showing it? Most people won't have one, or have one in the place where I added mine. I explained what to do very clearly at 7:40.

Next time you have the problem, immediately try using engine starting fluid, or some gasoline sprayed into the air intake. If it starts right up, then you have a fuel system problem.

Well in experimenting with the problem I've narrowed it down some more... since I had to drain the carb to work on it, the problem became all the more obvious. Fuel isn't making it to the carb (I put my filter for outgoing on the end, about 3-4 inches before the carb fuel inlet, and I can clearly see that it is not filling... I start up fine with starter fluid as always, which tells me that my problem is somewhere between the tank and the carb... All of my lines are clear though, I blew through each just to ensure that before installation, and my vacuum pump is new and of quality brand so that's fine... The only thing that puzzles me is the hose setup, I did it the way it came, but my scooter came to me pre-assembled by the dealer so maybe they messed up from the beginning? I have a gas tank unlike what I am used to seeing, it has 2 ports on top (actually 3, there's one at the very top near where u fill it is capped off, much smaller than the other 2) and only one of those 2 ports actually is going into the fuel inlet for the vacuum pump, the other is connected to a T and is having gas go back in from the outlet. I presumed that was done like that to prevent vacuum pressure from building up inside of the tank and eventually being greater than the pump's capacity, but I am now looking at it as the most probable culprit. Any experience with something like that? I'm more experienced with petcock style, elevated fuel tanks, so IDK if maybe that's all wrong... seems like it could be as simple as raising the fuel line going back in the tank so that fuel will go to the carb until enough pressure against the float is built up for it to go that way, or maybe uncapping that small port to allow air to fill the tank as fuel is drained from both of the other ports... I'm just glad to finally have the possibilities down to a minimum lol

Walbro

Video filmed in the Bahamas.

The fuel level height is suppose to be around 18.5mm. If no one ever touched the float, then you should not have to bend the tab on the float to adjust the height. More important is that the plunger attached to the float has a good seat.

Arthur Bradley there suppose to be paralel to the carb body. go to 90GTVert he has awesome videos.

Kevin Stearns I already answered this viewer almost 1 year ago. He was given the correct information. Based on your comment, my videos are no good? LOL

@@electronicsNmore I think Arthur Bradley might be a little ... or maybe a big ... slow? LOL