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Sonny scooter, not getting fuel from gas tank

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Many of these has a filet in the valve / gas shut off , about the size of a pencil eraser,,,, take very little to clog it up.... valve / shut off should just unscrew after you remove the gas line's ... DON'T JUST CLEAN IT OUT .. GET A NEW FILTER FOR IT, . . .BRAKE CLEANER SPRAY WORKS GOOD FOR CLEANING LITTLE SPACES OUT .. and it dry's fast ..

Posted on May 13, 2014


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SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017


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My scooter won't come on what the problem?

To start a scooter needs three things:
  • Gas
  • A spark
  • Cylinder compression
If your scooter won't start it due to one of the above not being present. Before you start troubleshooting, make sure there is gas in the tank by actually looking into it. Don't just trust the gas gauge!
Most scooters have four things that need to be done before they can be started with the electric starter:
  • The ignition has to be turned on
  • The kill switch (usually near the right grip) has to be in the "on" position
  • The rear (left) brake lever has to be squeezed.
  • The starter button must be pressed.
Some scooters may have other interlocks on the front brake or the center stand. Check your owner's manual to make sure that you are doing all you need to to complete the electrical circuit which enables it to start.
If the scooter doesn't turn over when you've done all the required operations, there's an electrical problem with the battery. Make sure the battery is charged. If it is, make sure the fuse hasn't blown. If it hasn't, check to see if you are getting voltage to the starter motor terminals. If you are, the starter motor is likely defective. Many scooters have a kick start (see your manual). If the battery is OK and the starter motor doesn't work, try kickstarting it. It's usually not too hard. My scooter usually starts OK on the 2nd or 3rd kick.
If the scooter does turn over but still doesn't start you have to check for a spark and make sure gas is getting to the engine. To check for a spark, remove the spark plug from the cylinder, hold the tip of the plug against the cylinder head and crank the engine. You should see a spark across the gap. If you don't, there's a problem with the ignition. Could be a faulty coil or electronic ignition module which will have to be replaced, or it could just be a lose wire.
If you do have a spark, you need to check the gas. Make sure there is gas in the tank first! If there is you need to check the fuel valve. Most scooters use a gravity fuel feed by locating the fuel tank higher than the carburetor. The fuel usually then flows through filter and then through a vacuum operated valve. The valve has three hoses connected to it. One if from the fuel tank and is for the gas going in, one is connected to the carburetor and is for the gas coming out and one goes to the engine manifold which provides a vacuum. If you disconnect the hose from the carburetor, fuel should run out when you crank the engine (be careful to catch the gas if you do this and don't do it with a hot engine). If you don't see gas the fuel valve may be faulty. You can try applying a vacuum to the control port of the valve and see if the fuel flows. Sucking on the line is one way to do this (but make sure it's the vacuum line, not the gas line if you try this!).
If you are getting a spark and you are getting gas to the carburetor and the engine is turning over on the starter OK, it's possible that the electrically operated automatic choke has failed. It's supposed to operate when the engine is cold, but if it's stuck or burned out, the mixture will be weak and the scooter probably won't start. The automatic choke is usually a black cylindrical object attached to the carburetor with a couple of wires coming out of it as shown on the left. It's the only electrical powered component attached to the carburetor, so it's usually not hard to spot. If you have a voltmeter you can measure the resistance across the leads of the choke. It should be somewhere in the region of around 10 or 20 ohms. If it's an open circuit, it's burned out and will need to be replaced. If it seems to be OK it may be stuck, or the wiring to it may have a problem. Check to see that it's getting voltage.
It's also possible that there is a problem with the carburetor and if so you may need to remove it and clean it out. If the scooter has been sitting for a few months with gas in the carburetor, the gas may have evaporated and left a sticky "gum" behind that will prevent the carburetor from working properly and which must be removed.
If the automatic choke is OK, the starter cranks the engine, there's gas and there's a spark then there may be an engine problem. You need to check the cylinder compression. You need a compression tester to do this. It screws in instead of the spark plug and measures cylinder pressure. When you crank the engine you should see a reading of around 150 psi or more. If it's 100 psi or less there's likely and engine problem (bad valve, bad piston, failed piston rings) which will need the engine taken apart to find.
Probably the most common problems are a dead battery or carburetor problems due to bad adjustment or build up of gummy deposits. Carburetor problems usually come on slowly though. If a scooter is OK one day and refuses to start the next day, I'd first suspect an electrical problem.

Dec 12, 2017 | The Health & Beauty

1 Answer

My Sym moped starts but won't idle It shuts off when trying to give it gas

Hi, Gigi and the usual suspects are:
1. Fuel cap or fuel tank is not venting properly.
2. Fuel filter clogged.
3. Fuel line pinched or kinked.
4. Float needle and seat sticking.
5. Float level too low.
6. Carburetor bowl vent line clogged/blocked/pinched.
7. Idle adjusting screw set too low.
8. Air/fuel mixture screw set too lean.
9. Idle port, transfer ports, slow air jet clogged.
10. Slow fuel jet clogged.
11. Faulty fuel pump.
For more information about your issue and valuable "Free" downloads that you will need please Click on the links below. Good luck and have a nice day.
Scooter Questions Get Answers to Your Scooter Starting Question
Scooter Troubleshooting Scooter won run All about Scooters
My chinese scooter wont idle or start Check the fuel petcock

Btw, I’m available to help over the phone in case u need at

Oct 01, 2016 | Sym 125 EXC SIXDAyS Motorcycles

1 Answer

How do i fix my motorcycle honda wave dash fuel gas not continous flowing if i fixed the gas cover

Hi, Danilo always check fuel flow first to isolate the problem area otherwise the usual suspects are:
1. Fuel tank empty.
2. Fuel cap or fuel tank not venting properly.
3. Fuel filter clogged with rust or dirt.
4. Vacuum line to fuel valve clogged, cracked, pinched, bent, broken, or missing*
5. Faulty vacuum line switch/relay
6. Petcock clogged or diaphragm cracked, cut or torn*
6. Fuel line from the fuel valve/petcock to the carburetor clogged, cracked, pinched, bent, broken, or missing.
7. Vacuum lines to the mechanical fuel pump clogged, cracked, pinched, bent, broken or missing*
8. Faulty electric fuel pump and or wiring*
9. Fuel line from the fuel pump to the carburetor clogged, cracked, pinched, bent, broken, or missing*
10. Carburetor inlet fitting clogged.
11. Carburetor float and or needle and seat stuck.
12. Carburetor overflow line clogged, pinched, or bent.
13. Vacuum line from carburetor deacceleration valve not zipped tied*
* If equipped or applicable.
For more information about your issue and valuable "FREE" downloads that you will need please click on the links below. Good luck and have a nice day.
Scooter Troubleshooting Scooter won run All about Scooters
My chinese scooter wont idle or start Check the fuel petcock
Honda Wave 110i User Manual

Btw, I’m available to help over the phone in case u need at

Aug 31, 2016 | Honda Motorcycles

1 Answer

Where is gas tank location on a 2011 50 cc sunny scooter.

Looks like the fuel cap is behind the seat, so most likely the fuel tank is under the seat.

A manual is available here:

Welcome to Sunny 50 Scooters


May 12, 2016 | GAS Motorcycles

2 Answers

Scooter not getting gas to carb.

Silly question, but are you sure you are getting gas through the line? Could the line from the tank be plugged? How about the tank port?
Is there a fuel shutoff?

May 10, 2016 | Motorcycles

1 Answer

I have a chongqing astronautic bashan scooter and the gas is not making it to the plugs for some reasson

Hi, Chad and the usual suspects are:
1. Enrichner system plugged, not properly functioning or improperly operated.
2. Fuel overflow.
3. Restricted fuel supply.
4. Gas cap and or fuel tank not venting properly.
5. Plugged slow jet or passages.
6. Inlet system air leak.
For more information about your issue please visit the websites below. Good luck and have a nice day.
MopedTrouble ShootingTutorial
The Ultimate GY6 Starter Ignition Troubleshooting Tutorial
scooter not getting gas
My chinese scooter wont idle or start Check the fuel petcock
49cc Scooter not getting fuel It Is The Ride

Btw, I’m available to help over the phone in case u need at

Mar 27, 2016 | GAS Motorcycles

2 Answers

The Scooter was only ridden for 63miles around neighborhood. Then sat for about six months now wont start was told gas could be old. What to do

Best bet would be to empty the fuel left in it then buy some fuel stabilizer and refill fill the tank with good gas also check the battery and fuses.

Feb 19, 2016 | GAS Motorcycles

1 Answer

Yamaha vino 125 scooter leaks gas when i try to start it

carb will need cleaning as it sounds like you've got a stuck float only leaks when you try to start it as the fuel tap only flows when the engine is turning over.
When leaving a bike stood for a while with an empty tank you should put an oily rag into it to prevent rusting...although the correct method is to fill the tank right to the top and add fuel stabiliser.

Nov 20, 2012 | 2009 Yamaha Vino 125

1 Answer

Fuel Starvation on 2006 200cc Vespa. Toward end

It's quite easy to get the tank out.
Remove the 4 bolts (2 front and 3 back) on top of the tank under the seat. You can lift the tank out.
replacing the fuel tap is a bit harder as you need to loosen a nut inside the tank, then pull the tap out.

Mar 16, 2009 | Peg Perego Vespa Scooter

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