20 Most Recent 1998 Yamaha V Star Classic Questions & Answers

how about the plugs or fuel line itself could be a bad fuel pump wihich are in the tank ck the fuel pressure

Hi
That sounds like the bevel box gears at the rear wheel or the drive shaft to them
Pull back the rubber boot at rear of engine to check if shaft is rotating
remove rear wheel & check the output shaft from the bevel box is rotating
If not then remove bevel box & check splined join to drive shaft

Ride Safe
Bike-Doc

change the gasket

Make sure the power for the auxiliary lights is not being taken directly from the battery. Never draw power for accessories directly from the battery. Always take power from a wire past the regulator/rectifier or the charging system will either boil the battery dry or damage your expensive sealed battery.Charge and load test the battery to see if it is OK. If there are three wires coming out of the alternator (like a Honda) you should check the three wires for continuity in an combination. You should have no continuity between any of these wires and ground , that is the indicator that says you need a new stator.

A service manual is a valuable tool with an aging bike. I suggest the dealer/mfr. or Clymer books. In the meantime, go to the library reference section...646 stacks should have what you need.

hi buddy its on the rights side engine th pic below will show you the inside you need to ucsrew the 2 bolts holding the casing in then pull the cover off and behind the cover will be the filter and that just pops out any more info get back to me

Hi and welcome to FixYa,

Let's try process of elimination:

• remove both pugs;
• reconnect each plug to respective sparkplug wire;
• ensure that the threaded metal part of the plugs touches bare metal of the engine;
• crank/start the bike;
• the plugs should show spark at each electrode alternately;
• if yes, the plugs, coil, ignition system works;
• if not, the plug not with sparks has an issue which could be the plug itself, the sparkplug wire, the ignition coil, the CDI/igniter.

Having done this and both plugs have sparks, then it is fuel issue. To verify, you could try:

• at the bottom of each carb is the bowl with a drain screw;
• if the each carb has fuel, loosening each of the drain screw would allow fuel from the bowl to drain through the drain hose;
• which ever carb/bowl has no fuel draining would be suspect;
• of course it could also be a blocked fuel line (kinked) or weak fuel pump;
• if both bowls/carbs drains fuel, then it would be fuel delivery to the combustion chamber;
• this then would require cleaning/rebuilt.

Good luck and Thank you for using FixYa.

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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:

1. 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.
2. 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.
3. 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.
4. 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.
5. Exhaust System Blockage: A restricted exhaust system, such as a clogged or damaged muffler, can impede the flow of exhaust gases, affecting engine performance.
6. 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.
7. 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.
8. 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.
9. Valve Clearance: Incorrect valve clearance can affect engine performance. Ensure the valve clearance is within the manufacturer's specifications.
10. 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.

Buy a fuel injected bike !! LoL !!!

You have dirty clogged jets in your carbs. Remove the carbs and clean and clear the pilot jets and main jets.

Stuff like that is non critical, tighten loose, then snug it it up a bit. However, it is all here http://www.xs650.com/threads/side-cover-torque-requirement-help.28305/ https://www.google.com/search?safe=off&rlz=1C1QJDB_enCA643CA644&sxsrf=ALeKk03LRpQ57Mt2EJdylkwY17cM5BNiEg%3A1608145019680&ei=e1jaX-vlKImp5NoPoIqegA8&q=V+Star+650.+What+are+clutch+cover+torque+specs ..