Question about Yamaha Motorcycles
I have put a new battery into my bike and it turned over but didn't start so I tried to bump start it and after the 4th try it went as normal later on that night I turned the ignition key the neutral light came on the fuel switch was on and all it done was turn over but didn't start can someone help me please
Posted by Anonymous on
Hi, Anonymous and the usual suspects are:
1. Fuel tank empty.
2. Fuel supply valve/petcock turned off.
3. Fouled spark plugs.
4. Engine flooded as a result of overuse of the enricher.
5. Vacuum hose to the fuel supply valve/petcock disconnected, broken, cracked, or pinched.
6. Fuel valve/petcock or filter clogged.
7. Fuel line to carburetor or throttle body pinched or kinked.
8. Carburetor float stuck.
9. Fuel injectors clogged.
10. Severely discharged or damaged battery, you need 12.5 volts or better and be able to pass a load test if necessary.
11. 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.
12. Loose or corroded wire connection at the coil, battery or plug between ignition sensor and CDI box.
Spark plug cables in bad condition and shorting check for leakage in the dark, cable connections loose, or connected to the wrong cylinders.
13. Ignition timing incorrect due to a faulty MAP, CKP, O2, TPS, sensors.
14. Faulty neutral, clutch lever, or kickstand safety switch.
15. Faulty fuel pump or fuse or relay.
16. Faulty CDI box.
17. A stuck bent or burnt valve.
18. Tip over sensor needs a reset.
19. Check for engine trouble codes.
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.
YAMAHA SR125 Owner Manual
OEM parts for Yamaha
Total Beginer Yamaha SR125 wont start Help Please
Posted on Dec 06, 2016
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Posted on Jan 02, 2017
you have a problem with the starter not turning the engine. so we probily not sending a signal to the starter.
you realy confused me when you started talking about gas and choke?
if the engine doesnt turn over none of this even matters.
these new bikes have many safety features .
you have a sensor for netural and you have a sensor for your kickstand and a sensor for your clutch
and all of these have to be workinf right for your engine to turn over.
so with your kickstand up and the bike in netural and the clutch lever pulled in
it should turn over and start.
when it doesnt you need to check your wiring to the switches one might have come loose.
or could be a bad switch.
let us know what you find
Posted on Nov 23, 2008
SOURCE: DT125 no electrics! non starter
how about replacing the fuse by the battery it is a master fuse and thats what it sounds like
since all lights and bike runs after a bump it sounds like a master fuse problem
if not check your batterie ground it might be cut or loose
Posted on Aug 04, 2009
SOURCE: ducati monster 620 went dead
Sounds like a detached connector or a blow fuse. First open your user manual, locate the fuse holder and dbl check the fuse... You have two circuits, the On circuits, and the accessoiry (wich are not essential) seems that you lose the accessory...
Posted on Aug 05, 2009
I am having exactly same problem. re starting, battery and fizzz. At the bottom of the carb on bikes left side is s screw. get a glass or old clean jam jar, place the thin tube in jar that comes off the bottom of carb, turn screw. petrol should start flowing into jar. let out about two egg cups full into jar. re tighten screw. hold jar up to light. what you have done is remove any water from the carb. you should see any water floating below the petrol. NEED I SAY DONT SMOKE WHEN DOING THIS . The fizz i cleaned all the contacts of any white deposits around bulb holders in the indicator arms.tightened the wiring conectors. Removed and dcleaned the indicator switch.
Posted on Oct 05, 2009
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