Question about 2005 Yamaha TT-R 125 L

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Bike will start but will not respond to throttle. It has been sitting for more than a year with old gas in the system.

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You will need to drain all of the old gas. remove carb to clean. remove float bowl. remove jets and clean with spray carb cleaner. use a bit of thin copper wire to probe the jets. count the number of turns to close mixture screw and jot the amount down somewhere. remove mixture screw and spring and clean the bore with carb cleaner. spray into float needle hole to flush out gunk through the top. reassemble, reset mixture screw , fill tank with new gas.

Posted on Sep 14, 2010

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2 Answers

Where should I start on a motorcycle that has been sitting for 20 years?


Hi Nick:
What a great project.
- I'd start with a really thorough clean up.
- You've mentioned the gas. Definitely, drain the tank, hoses, carbs, and clean the carbs. If there's a filter I'd change it.
I wouldn't even try to run it without cleaning the carbs first.
- Replace the battery, oil, and spark plug.
- Engine coolant?
- Tires? I wouldn't worry until I had it running but definitely replace.
Patience & time. You'll have an excellent bike.

Jul 13, 2015 | Honda Motorcycles

1 Answer

BMW Motorcycles


Usually, a rapid or immediate loss of power is indicative of a major component failure on an engine...and its something you should consider. Some tell tale signs, smoke out of the exhaust (note the color); or severe noises like loud banging and knocking- time for a major engine repair / over-haul.

On the other hand, perhaps what is happening is just coincidental to some other problem that was already in the making and was exacerbated when you snapped open the throttle.

Check the gas flow from the tank through the delivery system and filter- check the fuel shut-off valve, make sure it's fully open and that it is free of any clogs which would prevent the full flow of gas to the carburetor. Check the carburetor, see if the float bowl is full of gas; if necessary, check for a faulty fuel pump.

Another remote possibility is stale gas- was the bike sitting in storage for a while or did you use gas from a can that was lying around in storage...especially if it is of an ethanol blend that absorbs moisture.

Check the electrical system for ground shorts, spark plug cables for any deterioration and intermittent spark, check the CDI for either a weak, no-spark or verify a strong spark; and so-forth.

If everything is so far okay, inspect the engine oil; it should look smooth, glossy, and somewhat transparent. and run some compression tests.

Best regards.

Mar 11, 2014 | BMW Motorcycles

1 Answer

Throttle not responding on 2009 harley davidson electra glide classic


Hi Anonymous, it's going into limp mode, for more information about your question please visit the websites below. Good luck and have nice day. Harley Diagnostic Codes 04 to Present

Aug 02, 2012 | Harley Davidson Motorcycles

2 Answers

Van does not start or starts and shuts off immidately, have 60 psi fuel press, have spark, gas smells terrible.has been sitting for 1 year.


These vehicles have built in antitheft systems that are known for failing. If it starts and stalls in less than 5 seconds, this may be your problem. Go to this link, should help you out if this is your problem.
http://vatspasslockpasskeysecurityhelp.yolasite.com/

Dec 11, 2011 | Chevrolet Cars & Trucks

1 Answer

Bike bein sitting for a year and half and wont start now


Well if it has been sitting, check your main things ie: you have a good or new battery, all your fuses are intact,make sure you drain all the old gas out of the bike and try to clean the carbs with some carb cleaner. It sounds like if it is not a bad battery then your gas has turned bad on you in which case it wont start until you clean it all out and put fresh gas in it.Also make sure you clean the spark plugs and check for spark.Good luck.

Aug 02, 2011 | 2008 Hyosung GV250

1 Answer

Keihin CVK-D36 carbs on a 20 yr old ZZR 600 motorcycle. Bike starts fine on choke and idles ok when warm. The engine revs up fine on the choke. As soon as the throttle is twisted the engine stalls. The...


It sounds like your bike has been sitting in storage for an extended period of time (a year or more) - and the carburetors are plugged up. If this is the case, they will need to be completely disassembled and cleaned out.
If it hasn't been sitting (and the carbs aren't plugged up) then check that all of the normal tune-up items have been performed, especially valve adjustment, oil and filters, spark plugs, etc. If this fails to produce positive results, perform a compression check on the engine. Each cylinder must be able to produce at least 140 psi of compression in order to run and idle properly.

Nov 07, 2009 | 1990 kawasaki ZZR 600

2 Answers

Hello,I have 1994 ford taurus that turns over but won't start.It has been sitting for a year. Also when I turn on the key a computer box under the hood,mounted just above the radiator buzzes. Please give...


They're shouldnt be any computers near the radiator. Your coputer would be mounted inside the car or on then fender/firwall (away from heat). Make sure the battery is fully charged and that the distributar cap/rotor are not corroded. Also make sure the gas hasn't gone bad (get water in it after sitting). Put some water remover in the tank and try to ad fresh gas if your not able to drain the tank. You could also have bad/clogged injectors after sitting but highly doubtful if it ran fine a year ago. Check the easy things I mentioned first. Spray som starting fluid in the throttle body while holding the throttle wide open when starting (need 2 people for this) see if it tries to fire, if it does try you are not getting gas or not good gas. Out the water remover in first and as much new/fresh gas as possible.

Oct 01, 2009 | 1994 Ford Taurus

2 Answers

Scooter Open Throttle (?)


Assuming the bike is not fuel injected, you either have a stuck slide, a throttle cable out of place such that it is lifting the slide or a really bad manifold air leak. Tighten the clamps holding the carb to the cylinder and the bolts holding the manifold to the cylinder. That should eliminate any air leaks. Inspect the throttle cable, especially at the ends where it connects. Remove the air filter and look into the center of the carb. Does the slide in the throat of the carb open and close properly? Below is a generic carburetor. Your carb will be similar.

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Jun 30, 2009 | 2005 Qianjiang QJ100-2

1 Answer

Bike has been sitting for more then 5 years.


I hope it was sitting inside and not outside. This will be a real project bike for you. Bear in mind that your 'free' bike may get costly. The following are general thoughts.

  • If the bike has a kick starter is it froze up or will it rotate the crankshaft? If it has only an electric starter, remove the bike battery and run jumper cables to the battery leads. Will the bike turn over using a car's battery?
  • Do the clutch and throttle cables work okay?
  • Can you shift up and down through the gears?
  • With car battery hooked up, does it have spark?
  • Shoot WD40 into each cylinder. Be liberal with the WD40.
  • Change gearbox oil. Disconnect the chain.
Does this bike have fuel injection or carburetors? CDI ignition or points? How bad is the rust inside the gas tank? Have you checked the cost of the following items?
  • New chain. New front and rear sprockets (if needed)
  • Battery
  • Carb rebuild kits (if carbs are there)
  • Upholstery
  • Tires
  • Throttle, clutch and front brake cables
  • Speedometer cable
  • Rear view mirrors
  • Title changeover, License plates and insurance
  • Electric starter (if needed)
  • Fuel pump (if injected and if needed)
Get back to me on this bike. I would like to see what you find.

Mar 29, 2009 | 1983 Honda vt 500 ft ascot

1 Answer

Getting a fuel dump


Sounds like you need to clean the carbs out, as they are probably gummed/varnished badly after sitting for 2 years.

Mar 07, 2009 | 2000 Honda VT 1100 C2 Shadow Sabre

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