Yamaha Motorcycles - Recent Questions, Troubleshooting & Support


Hi, Scot 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 choke.
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. Fuel injectors stuck open.
13. Quick disconnect check ball stuck.
14. Compression below 75 PSI.
15. A stuck-bent-burnt valve.
16. Severely discharged or a damaged battery should have 12.5 volts or more and be able to pass a proper "LOAD" test if necessary, you may have a cursory reading of 12.5 volts or more but little or zero amperage the battery is faulty and must be replaced, AGM batteries fail in this scenario more so than lead-acid batteries.
17. 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.
18. Loose or corroded wire connection at the coil or plug between ignition sensor and ECM module.
19. Spark plug cables in bad condition and shorting check for spark leakage in the dark, cable connections are loose or connected to the wrong cylinders.
20. Ignition timing incorrect due to a faulty ignition coil, ignition module or MAP, CMP, CKP, O2, TPS, ETP, IAC sensors.
21. Faulty neutral, clutch, kickstand safety switch.
22. Faulty fuel pump or fuse or relay.
23. Faulty or corroded run/stop switch.
24. Tilt sensor needs a reset.
25. Security system not disarming alarm needs a reset.
26. Check for engine trouble codes.
For more information about your issue and valuable "FREE" downloads that you will need for viewing or printing please click on the blue links below. Good luck and have a wonderful day.
ViragoTechForum com
3 Things to Look for When Your Motorcycle Won Start The Allstate Blog
Yamaha XV750 Manuals
https://www.partsfish.com/page/oem-parts-for-yamaha
http://mybikemanuals.com/yamaha/yamaha-xv-owners-manuals

Yamaha... | Answered 15 hours ago


Hi, Anonymous for this scenario you will need your service manual that has all fastener torque specs and a wiring diagram on the back pages, parts fiche, and owners manual if you can't find the best tool you ever bought for your Yamaha, despair not, for a mere zero $0 you can download another one.
For more information about your issue and valuable "FREE" downloads that you will need for viewing or printing please click on the blue links below. Good luck and have a wonderful day.
Change the Spark Plugs on Yamaha Star 1100
Various spark plug wire replacement
https://www.sloneservices.com/SilverBack/Other-Stuff/V-StarShopManual99-07.pdf
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Yamaha star 1100 Owner Manual

2003 Yamaha V... | Answered 15 hours ago


Hi, Cory you turn on the ignition switch press the starter button and all you get is the dreaded "CLICK" or "CLUNK" now before testing any electrical component in the Starter System it is "IMPERATIVE" that you have a fully charged battery of 12.5 volts or more and be able to pass a proper "LOAD" test if necessary, you may have a preliminary reading of 12.5 volts or more but little or zero amperage, the battery is faulty and must be replaced. AGM type batteries fall into this scenario more so than lead-acid batteries. Depending on battery voltage starter relays and starter solenoids can make the same noise when you hit the starter button. You can easily determine which one is at fault by the following two simple tests:
STARTER RELAY- place your thumb and index finger on the starter relay and press the starter button, if you feel the click then the relay is faulty and needs to be replaced.
STARTER SOLENOID- bridge the positive and negative poles of the solenoid with a small screwdriver if you get a loud clunk then the solenoid needs to be rebuilt or replaced as necessary. If the engine turns over then replace the starter relay otherwise the usual suspects for a faulty starter solenoid are:
1. Battery terminals have loose or corroded connections.
2. Battery cables faulty due corroded or broken internal wiring at the cable connector especially the "NEGATIVE" cable which needs to be checked at "BOTH" ends.
3. Battery voltage, must be 12.5 volts or better, voltage from the battery to the main circuit breaker to the ignition switch to the security/ignition fuse to the TSM/TSSM module to the engine stop/run switch to the starter button to the starter relay to the green wire that connects to the starter solenoid must not drop more than 1/2 volt of battery voltage.
4. Disconnect spark plug cables, with a voltmeter connected to the battery, the ignition switch in the on position, the kill switch in the run position, the starter button depressed, starter engagement should not bring voltage below 9.6 volts DC. If the voltage is below 9.6 the battery is faulty and must be replaced. I "HIGHLY" recommend a maintenance free AGM battery typically they have more amperage for cranking.
5. Faulty starter relay, check continuity.
6. Faulty starter solenoid, check contact plate and shoes for excessive electrical erosion/etching, refurbish as necessary or invert contact plate and use the virgin backside. Check contact shoes for being loose. Replace solenoid if the negative function is still a final outcome.
7. Faulty starter, bench test starter with a 12-volt battery if negative function check, decontaminate and undercut armature commutator segments as necessary, check segments with an ohmmeter probe each one and the segment next to it for shorts. Have the armature tested with a growler and field coils, and brush plate with an ohm-meter for opens, shorts or grounds. Replace brushes if less than .438" It is generally cheaper to overhaul/refurbish a starter motor than buying a new one.
For more information about your issue and valuable "FREE" downloads that you will need for viewing or printing please click on the blue links below. Good luck and have a wonderful day.
http://www.r1-forum.com/forums/102-00-01-r1-mechanical-help/39482-bike-wont-start-clicking-sound-under-seat.html
Motorcycle not starting Clicking noises FIX
http://sports.racer.net/docs/yamaha_yzfr1_98_service_manual.pdf https://www.partsfish.com/page/oem-parts-for-yamaha
http://www.yamaha-motor.com/assets/service/manuals/2005/lit-11626-18-51_1257.pdf

2000 Yamaha... | Answered 15 hours ago


Hi, Rick engine "BOG" is mainly caused by a rich air and lean fuel condition but it can also be caused by a lean air and rich fuel condition this situation rarely occurs and is only caused by the misinformed weekend warrior that owns a toolbox. If the bike has been sitting for months or years you will have to completely disassemble the carburetor and submerge the parts (except rubber parts) in "Carburetor Dip" It usually comes in a gallon bucket with a wire mesh basket that can be purchased at any automotive store. If it is not the above scenario then the following explanation will apply.
The more you open your throttle the more vacuum you are creating in your carburetor venturi and your intake manifold. When you are operating at higher RPM any unmetered air that leaks into your system can become more obvious.
Unmetered air is air that is getting into your system after the fuel has been delivered. If you have unmetered air getting into your system between the butterfly/slide of the carburetor and the cylinder head this will create a lean condition.
All of the rubber components of the fuel system like vacuum hoses and intake manifold that you mount the carburetor to are made of rubber. If none of these components have been changed they are more than likely highly degraded and probably cracked in places to allow unwanted-unmetered-contaminated air into the combustion chamber. Check all of your vacuum lines and vacuum plugs for carburetor synchronization. The vacuum plugs are in the head just after the rubber intake manifolds. The petcock has a vacuum line as well as part of the emission system.
1. Check the intake manifold for fissures.
2. Ensure the bands used to tighten the manifolds down on the intake are secure and have not bound up the manifold.
3. Make sure air box fittings are not warped and fit completely over the carburetor.
Your airbox is metering air and is the first step in a process of consuming air and fuel. The system requires the resistance of the air filter in order to get the proper vacuum to "SUCK" the fuel out of the float bowl and create the proper venturi effect.
Improper mounting and sealing of the airbox will create a small lean effect. This might seem like no big deal but you are inviting dust and debris in your engine that is doing slow damage by not having proper fitment. Fix it so you know it's not contributing to your issue. Pick the low-hanging fruit first.
Do not go and start adjusting anything at this point. It ran fine before. There is something wrong with the assembly or a component. Do not adjust your floats. Get it back to where it was. The moment you start tweaking everything is the moment you lose OEM settings which are a must-have for fine-tuning and maximum performance.
Fine-tuning your carburetor and multi carb syncing come at the very end following the proper procedure established by the Carburetor Gods.
For more information about your issue and valuable "FREE" downloads that you will need for viewing or printing please click on the blue links below. Good luck and have a wonderful day.
https://netrider.net.au/threads/yamaha-vstar-650-spluttering-bogging-down-under-load.211214
https://www.motorcycleforum.com/129-first-bike-new-rider/101152-losing-power-v-star-650-a.html
Yamaha XVS650 Service Manual
https://www.partsfish.com/page/oem-parts-for-yamaha
Yamaha star XVS650P Owner Manual

2001 Yamaha XVS... | Answered Yesterday


Hi, Heinricht for this scenario you will need your service manual that has all fastener torque specs and a wiring diagram on the back pages, parts fiche, and owners manual if you can't find the best tool you ever bought for your Yamaha, despair not, for a mere zero $0 you can download another one.
For more information about your issue and valuable "FREE" downloads that you will need for viewing or printing please click on the blue links below. Good luck and have a wonderful day.
http://www.r1-forum.com/forums/104-04-06-r1-mechanical-help/263542-how-do-i-reset-oil-light-after-oil-change-plz-help.html
http://www.r6-forum.com/forums/57-garage-mechanical-help/111369-engine-oil-light-blinking.html
Yamaha 2006 YSF R1 Supplementary Service Manual
https://www.partsfish.com/page/oem-parts-for-yamaha
2006 Yamaha YZF R1 Owner Manual

2006 Yamaha... | Answered Yesterday


Check the float it maybe set too high... the gas falling into the float isn't running long enough before the float shuts her down.. Also check that the line from the fuel tank is clear and not full of kinks. Then set the low idle and high idle needle valves on the carb... call manufacturer or local much to get the screw turns...make sure the rubber seal between the engine and the air is not sucking in air. ... it's usually like a mini pipe.

Yamaha... | Answered Yesterday


Follow the positive wire from the battery. It will go directly to the fuse box

Yamaha... | Answered Yesterday


See user manual or if you;don't have one copy and paste this link; www.manualslib.com/manual/660137/Yamaha-Fz6-Na.html?page=20

Yamaha... | Answered 2 days ago


I would swop the coils but it won't be a coil if only one is misfiring. Swop the lead and then plug over.
The coils serve two cylinders each.

1998 Yamaha... | Answered 3 days ago


Hi, Jarok for this scenario you will need your service manual that has all fastener torque specs and a wiring diagram on the back pages, parts fiche, and owners manual if you can't find the best tool you ever bought for your Yamaha, despair not, for a mere zero $0 you can download another one.
For more information about your issue and valuable "FREE" downloads that you will need for viewing or printing please click on the blue links below. Good luck and have a wonderful day.
https://www.motorcycleforum.com/97-yamaha/102622-bypass-neutral-switch-2007-650-vstar.html
Part 78 How to eliminate neutral switch and why to do so ZIpty product...
Yamaha XVS1100 Service Manual
https://www.partsfish.com/page/oem-parts-for-yamaha
YAMAHA XVS1100 Owner Manual

2001 Yamaha V... | Answered on Jun 18, 2018


Hi, Wil check your chain and sprockets for proper tension, alignment, sprocket wear and torque specs for this scenario you will need your service manual that has all fastener torque specs and a wiring diagram on the back pages, parts fiche, and owners manual if you can't find the best tool you ever bought for your Kawasaki, despair not, for a mere zero $0 you can download another one.
For more information about your issue and valuable "FREE" downloads that you will need for viewing or printing please click on the blue links below. Good luck and have a wonderful day.
Yamaha Super Tenere XTZ750 Service Manual
https://www.partsfish.com/page/oem-parts-for-yamaha
http://mybikemanuals.com/yamaha/yamaha-xt-owners-manuals
Yamaha XTZ 750 Super Tener
Yamaha XTZ 750 Wikipedia

1995 Yamaha XTZ... | Answered on Jun 17, 2018


Hi, Mike and the usual suspects are:
1. Severely discharged or a damaged battery should have 12.5 volts or more and be able to pass a proper "LOAD" test if necessary, you may have a preliminary reading of 12.5 volts or more but little or zero amperage the battery is faulty and must be replaced, AGM batteries fail in this scenario more so than lead-acid batteries.
2. Failed alternator/generator and or voltage regulator.
3. Loose or corroded battery terminals and or cables especially the "NEGATIVE" cable, look for loose, corroded, or broken connectors inside the cable harness at "BOTH" ends.
4. Failed main circuit breaker or ignition switch, check for loose connections and continuity.
5. Failed system and or ignition relay, check for continuity.
6. Failed ignition coil, stator, magneto, ignition/electronic module.
7. Failed CKP, CPS, CMP, MAP, TPS, or BAS sensor, corroded, loose or broken wire connector pins/sockets.
8. Throttle cables and or idle speed improperly adjusted hot idle speed should be 950 RPM to 1000 RPM.
9. Faulty neutral, side stand or clutch lever safety switch.
10. Faulty or corroded kill switch.
11. Accelerator pump damaged or not working.
12. Water or dirt in the fuel system, carburetor or filter.
13. Restricted, blocked or kinked fuel line.
14. Fuel tank empty.
15. The gas cap is not venting properly or fuel tank venting system blocked, loosen gas cap and go for a test ride.
16. A failed fuel pump, pressure regulator and or fuel injectors.
17. Vacuum line from intake manifold to petcock broken, cracked, or not attached, carburetor vent line plugged.
18. Needle and seat stuck closed in the float bowl.
19. Petcock clogged or damaged.
20. Lean angle switch is faulty or needs adjustment.
21. Catastrophic engine failure, perform a compression test.
For more information about your issue and valuable "FREE" downloads that you will need for viewing or printing please click on the blue links below. Good luck and have a wonderful day.
ROADSTAR FUEL PUMP INTERMITTENT FAULT
Bike Dies While Riding Road Star Warrior Forum Yamaha Star Warrior Forums
http://www.werder.ee/Manual/XV1600.pdf
https://www.partsfish.com/page/oem-parts-for-yamaha
Yamaha ROAD STAR XV16A Owner Manual

2001 Yamaha XV... | Answered on Jun 17, 2018

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