2009 Yamaha V Star Classic - Answered Questions & Fixed issues
2005 model 650. It idles OK but why does it lose power when I get (to) about 1/4 throttle and only gets to 50 mph?
If your 2005 model 650 motorcycle is experiencing a loss of power and struggles to go beyond 50 mph when you reach about 1/4 throttle, there could be several potential reasons for this issue. It's important to identify the underlying problem to resolve the performance concern. Here are some common causes to consider:
- Fuel System Issues: Insufficient fuel supply or a clogged fuel filter can restrict the flow of fuel to the engine, leading to a loss of power. Check the fuel filter, fuel pump, and ensure the fuel lines are clear and not kinked.
- Air Intake Blockage: A blocked air filter or a clogged air intake system can limit the amount of air entering the engine, affecting its performance. Clean or replace the air filter as necessary.
- Carburetor Problems: If your motorcycle is equipped with a carburetor, issues such as a stuck float, clogged jets, or incorrect adjustments can lead to poor performance. Cleaning and tuning the carburetor might be necessary.
- Ignition System Issues: Faulty spark plugs, ignition coils, or ignition timing problems can result in incomplete combustion, leading to a loss of power. Check and replace any faulty ignition components.
- Exhaust System Blockage: A restricted exhaust system, such as a clogged or damaged muffler, can impede the flow of exhaust gases, affecting engine performance.
- Engine Compression: Low engine compression due to worn piston rings or cylinder head gasket leaks can reduce engine power. A compression test can help diagnose this issue.
- Throttle or Choke Cable Problems: A misadjusted or sticking throttle or choke cable can affect the fuel-air mixture and throttle response. Ensure that the cables are properly adjusted and move freely.
- Electrical Issues: Faulty sensors, wiring problems, or issues with the electronic control unit (ECU) can impact engine performance. A diagnostic scan might be required to identify electrical problems accurately.
- Valve Clearance: Incorrect valve clearance can affect engine performance. Ensure the valve clearance is within the manufacturer's specifications.
- Transmission or Clutch Problems: Issues with the transmission or clutch can result in power loss and limited top speed. Inspect and service the transmission and clutch components.
It's essential to perform a systematic inspection and troubleshooting process to pinpoint the exact cause of the problem. If you are unsure about diagnosing or fixing the issue yourself, it's recommended to seek the assistance of a qualified motorcycle mechanic or dealership. They have the expertise and tools to diagnose and repair the problem effectively.
How to check the oil in a2000yamaha v star motorcycle?
If it has a glass window you tilt the bike upright as possible and the oil should go about 1/2 up the glass window.
Other wise pull the oil filler cap it should have a dip stick attached to it.
If it does you dip it until the threads touch the case not screw it in.
Hope this helps
Why does my v star classic motorcycle wobble when i slow down?
Can you feel it in the steering or in the back end? Check for loose bolts, nuts etc. on the spindles look for worn parts or dusting of metal from wearing. Are the brakes at one time heated by stopping , which in turn warps the rotors. The list is endless buddy. Need more info.
Final drive
http://www.sloneservices.com/SilverBack/Other-Stuff/V-StarShopManual99-07.pdf
The link will take you to a service manual, I suggest downloading it. Good info in it.
First, If the oil came out of the breather, you need to find out if it was due to a faulty breather or through natural loss (you will lose gear oil over time through rapid temperature increase causing vapor and pressure increase-eventually oil loss will occur through the breather; synthetic oil can help reduce this, but so can regular level checks. If the breather is defective, replace with a new one (10-20 bucks depending on where you go) it is a press fit.
Second, if it came out of the fill plug on the back of the gear case, check the threads on the gear case as well as the plug, if both are good, check the condition of the collar (brass/copper looking ring on the plug. If it is missing, that could contribute to the oil loss. When you reassemble, use teflon tape to ensure a good tight fit. (mine has teflon tape on there too-only use enough to coat the threads...if you use too much, the plug will not seat all the way due to the tape blocking the threads)
Third, do the same check on the drain plug on the bottom. Reassemble with teflon tape on the plug.
Finally, on page 272 of that same manual in the link, there are procedures to follow for checking the drive shaft seal for leaks by the case. Check it and replace seals if required.
Pulling right
Check you front break. The right side of the break might be compressing more than the left.
If thats the case you will need to compress the breakpads evenly. If that was the problem you need to replace you pads.
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Muffler back pressure
Because drag pipes will lean out the air/fuel mixture, due to (much) lower backpressure.If fuel injected, then yes, some sort of piggy-back programmer is needed, or reprogramming the bike's computer.
Headlight relay
make sure voltage is getting to the lightbulb socket, if it is not ck. the wiring and headlight switch. electrical problems sometimes make you pull hair out. find a test light, and electrical diagram for that model and begin your search. Don't forget to make sure the lighting system has a good ground.
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