Motorcycles - Page 3 - Recent Questions, Troubleshooting & Support


Hi, Yagoonano1 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. Improper valve clearance (too tight)
17. 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.
18. 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.
19. Loose or corroded wire connection at the coil or plug between ignition sensor and ECM module.
20. 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.
21. Ignition timing incorrect due to a faulty ignition coil, ignition module or MAP, CMP, CKP, O2, TPS, ETP, IAC sensors.
22. Faulty neutral, clutch, kickstand safety switch.
23. Faulty fuel pump or fuse or relay.
24. Faulty or corroded run/stop switch.
25. Tilt sensor needs a reset.
26. Security system not disarming alarm needs a reset.
27. 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.
https://www.triumphrat.net/classic-vintage-and-veteran/316393-1971-t120r-wont-start-help-2.html
http://classicmotorcycleforum.com/index.php?topic=3895.0
http://www.classicbike.biz/Triumph/Repair/1970s/70-Triumph-Repair-Manual-63-70.pdf
https://partsbooks.britishonly.com/partsbooks/20-10305C.pdf
http://www.classicbike.biz/Triumph/OwnersManuals/1960s/68OwnersManualTriumph650s.pdf

Triumph... | Answered Yesterday


Hi, Anonymous for this scenario you will need your service manual, parts fiche, and owners manual if you can't find the best tool you ever bought for your Triumph, despair not, for a mere zero $15 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.triumphtalk.com/threads/anyone-install-a-center-stand-on-a-bonneville.44342/
https://www.triumphrat.net/air-cooled-twins-technical-talk/168890-center-stand-installation-confusion.html
https://www.youtube.com/watch?v=r-qG3t7b58o
https://www.tradebit.com/filedetail.php/278334910-triumph-bonneville-service-manual-motorcycle-2001-2012 $15
https://www.triumphestore.com/
https://www.triumphmotorcycles.com/offers-and-services/manuals

2008 Triumph... | Answered Yesterday


Hi, Dclasson001 for this scenario you will need your service manual, parts fiche, and owners manual if you can't find the best tool you ever bought for your Triumph, despair not, for a mere zero $15 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.triumphindia.org/2015/05/torque-settings-for-triumph-bonneville-t1oo-thruxton-scrambler-tabulated/
http://triumphtwincommunity.nl/usr-uploads/pdf/Triumph-Bonneville-Torque-Settings.pdf
https://www.tradebit.com/filedetail.php/278334910-triumph-bonneville-service-manual-motorcycle-2001-2012 $15
https://www.triumphestore.com/
https://www.triumphmotorcycles.com/offers-and-services/manuals

2008 Triumph... | Answered Yesterday


Hi, Frjaau it should be noted that the "AIR FUEL" mixture screw adjustment "ONLY" manages your idle and has no effect on any other circuit also any intake leaks must be repaired before the A/F adjustment procedure can be performed otherwise you will never obtain a proper idle and you will waste a lot of time chasing the impossible. The A/F mixture screw's purpose is to fine-tune the fuel charge entering the combustion chamber. The following applies to both 2 and 4 stroke engines:
1. The mixture screw may be sealed at the factory with a Welch Plug please review the following video for removal.
https://www.youtube.com/watch?v=wAXcksgvDkM
2. The mixture screw manages a range of 3 complete 360-degree counterclockwise turns from the bottom/closed position.
3. The mixture screw should have a spring and o-ring for tension and sealing integrity.
4. Turn the mixture screw clockwise until it gently bottoms out, this makes the fuel charge very lean and the engine should not idle if it does then the pilot/idle jet is too big and needs to be replaced with the next size smaller.
5. Turn the mixture screw 1 and 1/2 turns counterclockwise to establish a baseline for starting the engine.
6. To fine-tune the idle circuit, adjust the mixture screw 1/4 turn in or out to achieve maximum idle RPM, wait 15 seconds between each adjustment for the idle to settle.
7. Never go past 3 full turns out this will make the fuel charge rich, foul plugs, and produce black smoke out of the exhaust, if the engine RPM keeps increasing past 3 turns the pilot/idle jet is too small and needs to be replaced with the next size larger.
8. After achieving maximum idle back out the mixture screw another 1/8 of a turn then adjust the throttle cable idle stop screw to 950-1050 RPM.
9. This procedure works great on 99% of all engines, for the 1% that demand a more robust throttle response on aftermarket monster fuel delivery systems additional tweaking outside the box may be necessary.
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.triumphrat.net/air-cooled-twins-technical-talk/156428-adjusting-tuning-carbs-on-08-bonneville.html
https://www.youtube.com/watch?v=LnepyuOw3Xk
https://www.youtube.com/watch?v=p44VNddZ7Zc
https://www.tradebit.com/filedetail.php/278334910-triumph-bonneville-service-manual-motorcycle-2001-2012 $15
https://www.triumphestore.com/
https://www.triumphmotorcycles.com/offers-and-services/manuals


2007 Triumph... | Answered Yesterday


Hi, Geoffws if your carburetor or exhaust is:
COUGHING is usually caused by an air leak in the intake system and will generally have the same telltale signs, a wet or damp build-up of oil/gas seepage at the intake manifold to the cylinder head or carburetor to intake manifold connection and in rare instances a worn throttle plate shaft and or seals.
POPPING on deceleration is usually caused by a lean fuel condition or an air leak in the exhaust system and is generally located where black carbon soot is seen as a flashing build-up from any joint connection. This condition can easily be remedied by removing and cleaning both joint pieces and reassembling with high temp silicone and torquing the exhaust clamp to the proper spec.
SPITTING is usually caused by a faulty accelerator pump and or nozzle, or the float bowl needle and seat leaking and overflowing through the main jet mixing well nozzle, or the air-fuel mixture screw is adjusted too lean.
BACKFIRING is usually caused by a sticky/tight intake valve or a timing issue, 180 degrees out or cam chain off 1or 2 teeth.
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.triumphrat.net/air-cooled-twins-technical-talk/87954-popping-when-decelerating.html
https://www.r3owners.net/threads/exhaust-popping-running-lean.21998/page-2
https://www.tradebit.com/filedetail.php/278334910-triumph-bonneville-service-manual-motorcycle-2001-2012 $15
https://www.triumphestore.com/
https://www.triumphmotorcycles.com/offers-and-services/manuals

2008 Triumph... | Answered Yesterday


Hi, Jobiondo for this scenario you will need your service manual, parts fiche, and owners manual if you can't find the best tool you ever bought for your Triumph, despair not, for a mere zero $15 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://triumphbonneville.org/triumph-bonneville-ignition-control-unit-cdi-limiter-failure/
https://www.youtube.com/watch?v=HdP__nnG1XA
https://www.tradebit.com/filedetail.php/278334910-triumph-bonneville-service-manual-motorcycle-2001-2012 $15
https://www.triumphestore.com/
https://www.triumphmotorcycles.com/offers-and-services/manuals

2001 Triumph... | Answered Yesterday


Hi, Ulf_m_holmst parts swapping is common with most motorcycles when it comes to interchangeable or compatible parts from one model with another "EXCEPT" for the CDI's they are year-make-model "SPECIFIC" the best thing to do is call your local Dealership Parts Department or a reputable independent shop. If your location is not near a shop then go online and find a parts catalogue or "FICHE" and match part numbers depending on your criteria.
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.tradebit.com/filedetail.php/278334910-triumph-bonneville-service-manual-motorcycle-2001-2012 $15
https://www.triumphestore.com/
https://www.manualslib.com/manual/805136/Triumph-Bonneville.html
https://bikez.com/motorcycles/triumph_bonneville_2006.php
https://en.wikipedia.org/wiki/Triumph_Bonneville

2006 Triumph... | Answered Yesterday


Hi, Will your bike starts great when cold but once it reaches operating temperature and the engine is shut off for a few minutes then you try to restart it and it will turn over but will not fire or it doesn't do anything, the usual suspects are:
1. When electronics get hot they build up resistance then stop working. It might be an ignition coil, stator, CDI unit etc. First, you must find out if the spark dies out. When the bike won't start, pull a plug wire off, stick a new spark plug in the end and ground the threads on bare metal while someone cranks the engine over. You should see a nice big blue spark between the spark plug gap. Incorrect spark plug gap will cause or contribute to a no start when hot issue.
2. Fuel Tuners have been known to cause this type of problem, disconnect it and see if resolves the issue.
3. Any engine management sensor could be faulty especially the ones that monitor the temperature.
4. Gas cap not venting properly, improperly routed fuel lines they must always go down from the gas tank to the carburetor never in any kind of a loop this will cause a vapor lock. Clogged, bent, kinked, pinched or restricted carburetor vent lines will do the same.
5. Overhead camshaft valves adjusted too tight when cold, this will cause loss of compression when hot, except for pushrod engines they usually get looser when hot.
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.triumphrat.net/triumph-supersports/826033-difficult-starting-when-hot.html
https://www.pnwriders.com/threads/efi-bonneville-not-re-starting-when-hot.176429/
https://www.tradebit.com/filedetail.php/278334910-triumph-bonneville-service-manual-motorcycle-2001-2012 $15
https://www.triumphestore.com/
https://www.manualslib.com/manual/805136/Triumph-Bonneville.html

2012 Triumph... | Answered Yesterday


Hi, David before testing any electrical component in the Charging 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.
1. 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.
2. To check the regulator unplug it from the stator. Take a test light and clip it to the negative terminal of the battery and then touch first one pin and then the other on the plug that goes to the regulator. If you get even the slightest amount of light from the test light the regulator is toast.
To do this with a meter: black lead to battery ground, red lead to each pin on the plug, start with the voltage scale higher than 12vdc and move voltage scale down in steps for each pin. Any voltage is a bad regulator.
3. On the other part of the disconnected regulator plug. Set the multimeter for Ohms x1 scale and measure for resistance across the pins of the stator. You should read something around 0.1 to 0.2 ohms for a 32 amp system.
4. Then check for continuity between each pin on the plug and frame/engine ground. The meter needle should not move (infinite resistance)(digitals will show infinite resistance) if the meter needle does move (indicating continuity)(digitals will show some resistance), recheck very carefully. If the meter still shows continuity to ground the stator is shorted (bad).
5. Set the meter to read A/C volts higher than 30 volts (the scale setting for voltage should always be higher than the highest voltage you expect or you may fry the meter). Start the bike, and measure from one pin to the other on the plug (DO NOT cross the multimeter probes! - touch them to each other). You should read roughly 16-20 vac per 1,000 rpm.
6. If the battery was good under load test, if the stator is NOT shorted to ground, and the stator is putting out A/C voltage, then the regulator is bad (most likely even if passed step 2)
For more information about your question 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.triumphrat.net/air-cooled-twins-technical-talk/463954-charging-system-problems-2001-bonneville.html
https://www.youtube.com/watch?v=RiYmHiP2C98
https://www.tradebit.com/filedetail.php/278334910-triumph-bonneville-service-manual-motorcycle-2001-2012 $15
https://www.triumphestore.com/
https://www.manualslib.com/manual/805136/Triumph-Bonneville.html

2001 Triumph... | Answered Yesterday


Hi, Robert for this scenario you will need your service manual, parts fiche, and owners manual if you can't find the best tool you ever bought for your Triumph, despair not, for a mere zero $20 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.triumphrat.net/air-cooled-twins-technical-talk/161631-2008-bonneville-valve-clearances-and-compression-data.html
https://www.youtube.com/watch?v=kOz7kFeHDD0
https://www.tradebit.com/filedetail.php/281344530-triumph-bonneville-t100-america-speedmaster-motorcycle-complete $20
https://www.triumphestore.com/
https://www.manualslib.com/manual/805136/Triumph-Bonneville.html

2010 Triumph... | Answered Yesterday


Hi, Joehravitt46 to validate it is indeed a fuel issue spray starting fluid into the air cleaner then try starting if it fires up and runs for a few seconds then dies then you definitely have a fuel problem, you need to locate the fuel flow origin 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. Fuel valve not in the on or reserve position.
5. Vacuum line to fuel valve or VOS is cracked, broken, pinched, or missing.
6. Fuel valve/petcock clogged or diaphragm cracked, cut or torn.
7. Faulty fuel valve allowing fuel to enter the combustion chamber through the intake vacuum line
7. Fuel line from the fuel valve to the carburetor or fuel pump clogged, cracked, pinched, bent, broken, or missing.
8. Fuel pump not working.
9. Fuel line touching cylinder or head causing fuel to boil and vapor lock, repair by rerouting and wrapping line with convoluted tubing.
10. Carburetor inlet clogged.
11. Carburetor float or needle and seat stuck.
12. Carburetor not venting properly overflow line or bowl fitting clogged, pinched, or bent.
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.triumphrat.net/air-cooled-twins-technical-talk/210428-no-fuel-getting-to-carbs.html
https://www.youtube.com/watch?v=Tx9fb1Ytz8k
https://www.tradebit.com/filedetail.php/278334910-triumph-bonneville-service-manual-motorcycle-2001-2012 $15
https://www.triumphestore.com/
https://www.manualslib.com/manual/1359522/Triumph-Bonneville.html

2001 Triumph... | Answered Yesterday


Hi, Zacharywj for this scenario you will need your service manual, parts fiche, and owners manual if you can't find the best tool you ever bought for your Triumph, despair not, for a mere zero $15 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.triumphrat.net/air-cooled-twins-technical-talk/88560-starting-woes-on-2001-bonneville-will-bump-start.html
https://www.horizonsunlimited.com/hubb/triumph-tech/triumph-bonneville-2004-poor-starting-74102
https://www.tradebit.com/filedetail.php/278334910-triumph-bonneville-service-manual-motorcycle-2001-2012 $15
https://www.triumphestore.com/
https://www.manualslib.com/manual/1359522/Triumph-Bonneville.html

2001 Triumph... | Answered Yesterday


Hi, Anonymous for this scenario you will need your service manual, parts fiche, and owners manual if you can't find the best tool you ever bought for your Triumph, despair not, for a mere zero 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.triumphrat.net/classic-vintage-and-veteran/92112-valve-adjustment-settings.html
https://www.youtube.com/watch?v=AtZVwTXkyE8
https://www.youtube.com/watch?v=kOz7kFeHDD0
https://www.tradebit.com/filedetail.php/278334910-triumph-bonneville-service-manual-motorcycle-2001-2012
https://www.triumphestore.com/
https://www.manualslib.com/manual/1359522/Triumph-Bonneville.html

1970 Triumph T... | Answered Yesterday


Hi, Anonymous for this scenario you will need your service manual, parts fiche, and owners manual if you can't find the best tool you ever bought for your Triumph, despair not, for a mere zero $ 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.triumphrat.net/classic-vintage-and-veteran/73195-kick-start-problem-on-73-bonneville.html
http://www.britbike.com/forums/ubbthreads.php?ubb=showflat&Number=117796
http://www.classicbike.biz/Triumph/Repair/1970s/70-Triumph-Repair-Manual-63-70.pdf
https://partsbooks.britishonly.com/partsbooks/20-10202C.pdf
http://www.classicbike.biz/Triumph/OwnersManuals/1970s/1971Triumph650OwnersManual.pdf

Triumph... | Answered Yesterday


Hi, Anonymous for this scenario you will need your service manual, parts fiche, and owners manual if you can't find the best tool you ever bought for your Triumph, despair not, for a mere zero $15 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.triumphrat.net/air-cooled-twins-technical-talk/312722-head-gasket-leak-2009-se.html
https://www.youtube.com/watch?v=1N17SQKzU4Y
https://www.tradebit.com/filedetail.php/278334910-triumph-bonneville-service-manual-motorcycle-2001-2012 $15
https://www.triumphestore.com/
https://www.manualslib.com/manual/1359522/Triumph-Bonneville.html

2009 Triumph... | Answered Yesterday


Hi, Anonymous for this scenario you will need your service manual, parts fiche, and owners manual if you can't find the best tool you ever bought for your Triumph, despair not, for a mere zero 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.google.com/search?q=Wiring+diagram+1967+Triumph+Bonneville+T120&tbm=isch&source=univ&sa=X&ved=2ahUKEwiRubG_maPlAhWkrFkKHV4hBMkQsAR6BAgFEAE&biw=1440&bih=757
https://triumphbonneville120.co.uk/wiring-diagrams.php
http://www.classicbike.biz/Triumph/Repair/1970s/70-Triumph-Repair-Manual-63-70.pdf
http://mybikemanuals.com/triumph/

Triumph... | Answered Yesterday


Hi, Damon for this scenario you will need your service manual, parts fiche, and owners manual if you can't find the best tool you ever bought for your Triumph, despair not, for a mere zero $15 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.triumphtalk.com/threads/fuel-tank-removal.44795/
https://www.youtube.com/watch?v=DGlgpoUvgpQ
https://www.tradebit.com/filedetail.php/253883097-triumph-bonneville-2001-2007-workshop-service-repair-manual $15
https://www.triumphestore.com/
https://www.manualslib.com/manual/1359522/Triumph-Bonneville.html

2001 Triumph... | Answered Yesterday

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