Question about 2005 Yamaha Zuma

1 Answer

2002 Zuma 50 cc two stroke Problem began by not starting after normal use. Would not start, then finally would start but would not run and after a couple of times attempting to start would not start again for a few hours, then the same cycle will begin again. A fellow supposedly had it fixed by blowing out the carbureutor. It ran for a couple of days, Now the same problem again. Cleaned air filter, new spark plug, put reverse pressure on fuel line. I am older guy that just uses the scooter for local runs. Thanks Russell Vincent

Posted by on

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Top Expert:

    An expert who has finished #1 on the weekly Top 10 Fixya Experts Leaderboard.

    Superstar:

    An expert that got 20 achievements.

    All-Star:

    An expert that got 10 achievements.

  • Yamaha Master
  • 39,978 Answers

Hi, Russell_vinc and the usual suspects are:
1. Fuel tank empty.
2. The fuel tank has old dead gas.
3. Fuel tank bottom contaminated with ethanol sludge, dirt, water, rust, etc.
4. Fuel supply valve/petcock turned off.
5. Fouled spark plugs.
6. Engine flooded as a result of overuse of the enrichner.
7. Vacuum hose to the fuel supply valve/petcock disconnected, broken, cracked, or pinched.
8. Fuel valve/petcock or filter clogged.
9. Fuel line to carburetor or throttle body pinched, kinked or blocked.
10. Carburetor float stuck.
11. Fuel injectors clogged.
12. A severely discharged or damaged battery, you need 12.5 volts or better and be able to pass a load test if necessary.
13. Check battery terminals for damage or corrosion, check the battery cables at "BOTH" ends for loose, corroded, or broken connectors, "INSIDE" and outside the cable harness, perform connector wiggle test and check cables with an ohmmeter if necessary.
14. Loose or corroded wire connection at the coil or plug between ignition sensor and ECM module.
15. Spark plug cables in bad condition and shorting check for spark leakage in the dark, cable connections loose, or connected to the wrong cylinders.
16. Ignition timing incorrect due to a faulty ignition coil, ignition module or MAP, CMP, CKP, O2, TPS, ETP, IAC sensors.
17. Faulty neutral, clutch lever, or kickstand safety switch.
18. Faulty fuel pump or fuse or relay.
19. A stuck bent or burnt valve.
20. Tilt sensor needs a reset.
21. Security system not disarming alarm needs a reset.
22. Check for engine trouble codes.
For more information about your issue and valuable "FREE" downloads that you will need please click on the blue links below. Good luck and have a wonderful day.
ZUMAFORUMS NET View topic Help my zuma 50cc won start anymore
Scooter Troubleshooting Scooter won start All about Scooters
Yamaha CW50L Service Manual
OEM parts for Yamaha
Yamaha ZUMA CW50N Owner Manual

Posted on May 06, 2017

6 Suggested Answers

6ya6ya
  • 2 Answers

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

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

SOURCE: ran good one day wouldn't start the next

Thank you for your quick response.
Just tried your solution.
Ran for about 20 feet and then flooded out.
Anymore suggestions?
Again, thanks for trying!

Posted on Oct 17, 2008

  • 1 Answer

SOURCE: '93 Grand Cherokee intermittently starts and runs

Hi, I had simmilar problem with my 1993 JGC . I ran out of gas and it would not start until the next day. Then it will start and run until I put the brakes on tho stop and then it will die. It starts right back up. Ended up being the voltage regulator in the ECC/ECM. It is at the mechanics shop right now waiting for the ECC to come in.I will post a follow up.
have Fun,
David C

Posted on Oct 31, 2008

SOURCE: Homelite AP 125 two stroke motor will not start

If you have a two line fuel system make sure the lines didn't get crossed. If they are you could still get gas to the cylinder but not enough. I hope this will of some help to you. Donnyb60

Posted on Mar 18, 2009

  • 5 Answers

SOURCE: 2001 Yamaha Banshee that won't stay running

If your jetting is too rich it will be extremely hard to kick start it and will most likely flood it from kicking.First thing i would do is pull the top of the carbs off (cable,slides and needles) and see which clip they're set at. If they are set stock which would be middle clip then lower the needle one clip. This will lean the mix out and should start up easier with no problems,The idle issue is most likely just off.If your fiance still has the TORS on it then on top of the carbs he will see 2 dime size and screws and wires as soon as he takes his seat off.While running he can turn each dime size screw in or out to adjust the idle. If it has a TORS elimator kit on it then he won't have all the junk on top of the carbs and it will be just a cable and round cap screwed directly on top of the carbs and the idle screws will be on the side of each carb (brass color screws with nuts to tighten) same thing...in or out to adjust the idle where needed.Hope this helps.

-Steve

Posted on Jun 08, 2009

  • 68 Answers

SOURCE: scooter wont start

carb could be clogged with trash even though fuel is gettin to carb the main jet could be blocked not letting fuel enter intake

Posted on Aug 02, 2009

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

Lost my keys to Zuma 50 cc Yamaha scooter need to be able to start without keys how


Hi, Jeremy for this situation I would call my local dealer or reputable shop's service/parts department and inquire about any possible quick fix or parts inquiry. If necessary transport your vehicle to the dealer or shop and have a professional technician take it for a test drive, if it is in running condition, and give you a written estimate of repairs and answer any specific questions you may have about your issue. For more information about your issue please visit the website below. Good luck and have a nice day.
https://www.tradebit.com/filesharing.php/search/0/yamaha+zuma+yw+50

Nov 01, 2015 | Yamaha Motorcycles

1 Answer

Yamaha Zuma 50/Cold Start Problem


Hi, James 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.
ZUMAFORUMS NET View topic 2005 yamaha zuma yw50t cold start issues
My Scooter wont start if engine is cold scooters
https://www.manualslib.com/manual/781192/Yamaha-Cw50l.html#product
OEM parts for Yamaha
Yamaha ZUMA CW50N Owner Manual

Jan 22, 2014 | 2012 Yamaha Zuma 50F

1 Answer

My 09 yamaha zuma 50 wont start


sounds like you need to replace your spark plug and than if that don't work a shop''..good luck

Feb 02, 2012 | 2009 Yamaha Zuma

2 Answers

49 CC STREET SCOOTER TWO STROKE NEED THE GAS TO OIL MIXTURE


the mixture ratio is 50 parts gas to 1 part oil. Use only a good quailty stroke oil, never use motor oil

Nov 01, 2011 | Quad 47 cc / 49 cc Pocket Mini Bike...

1 Answer

Excesive oil coming out exhuast


This is normal for a 2 stroke and not a problem at all. It's just a build up of 2 stroke oil that acumulates i the the packing in the muffler.
Nothing to worry about, and no solution to fix it really. You can re pack your muffler with clean packing, and try running a little less 2 stroke oil in your mix. I would recomend using a synthetic 2 stroke oil, with a mixture of 50:1 this would prevent some of the mess from happening.

Jul 11, 2010 | 2002 KTM EXC 200

1 Answer

How to adjust a macCullouch 110 chain saw carb?


Turn both jet screws CW to stops (lightly), then back out each CCW 1-1/2 turns each. This is a basic setting which should allow the engine to start and run. Check the fuel filter, air cleaner, and muffler for plugging. Start the engine and allow to warm up, then pull the throttle full on. Adjust H needle CW until the engine begins to speed up, but still 4-stroking. Proper final adjustment is when the engine 4-strokes when running free, but immediately 2-strokes when cutting. Release the throttle and adjust L needle CW for smoother idle, yet still allows the engine to 'follow the throttle'. Adjust idle speed screw so that the chain stops moving, but the engine continues to run. Hope this helps!

Jun 27, 2010 | Poulan Pro 16-Inch 38 cc Anti-Vibration...

Not finding what you are looking for?
2005 Yamaha Zuma Logo

Related Topics:

53 people viewed this question

Ask a Question

Usually answered in minutes!

Top Yamaha Experts

dhnguyen

Level 2 Expert

281 Answers

Steve Sweetleaf
Steve Sweetleaf

Level 3 Expert

1144 Answers

Tony

Level 3 Expert

2600 Answers

Are you a Yamaha Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...