Hi, B_steenbeke and the usual suspects are:
1. Idle port, transfer ports, slow air jet clogged.
2. Idle adjusting screw set too low.
3. Air fuel mixture adjustment too lean.
4. Pilot/slow fuel jet clogged.
5. Faulty accelerator pump.
6. Float level too low.
7. Float bowl contaminated old fuel, water, dirt, rust, etc.
8. Carburetor bowl vent line clogged/blocked/pinched.
9. Fuel line to carburetor kinked or pinched.
10. Fuel filter clogged.
11. Intake manifold leak.
12. The gas cap is not venting properly or fuel tank venting system blocked.
13. Vacuum line from intake manifold to petcock broken, cracked, or not attached, carburetor vent line plugged.
14. Needle and seat stuck closed in the float bowl.
15. Multi carburetors not in sync.
16. Faulty fuel pump.
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. 1992 XJ600 Unhappy Carb XJRider com Idles fine but dies upon throttle Yamaha Diversion XJ600N Owner Manual OEM parts for Yamaha Yamaha XJ600S 1992 Service Manual
Hi, Jamiepbock before testing any electrical component in the Light Circuit 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 because your battery may have 12.5 volts or more but little or zero amps causing the battery to be faulty and must be replaced, especially "AGM" batteries, also before diagnosing any turn signal/running light/parking light issue make sure the bulb is good and the light fuse has continuity with a test light. If you have replaced your OEM lights with one or all LED lights you are going to need a load equalizer.
If no turn signals work the cause could be a faulty turn signal module or the connector going to it, look for corroded, loose, or broken pins/sockets. Contact spray cleaner is great for removing corrosion.
If all four turn signals flash at the same time like hazard lights even though you only pressed one turn signal button then you have a LED light in the circuit and need a load equalizer that can be purchased from any motorcycle parts supplier.
If your speedometer does not function properly it will have to be fixed first because your turn signal module gets the data from the speedometer for normal turn signal function.
If your front turn signals don't work use a test light to check for power and ground at the bulb socket, then start backtracking the wiring through every wire connector to the turn signal switch/button and check for continuity, go all the way back to the fuse if necessary to find the cause of the malfunction.
If your rear turn signals don't work check your rear fender wiring harness connector first for corroded, broken, loose pins/sockets, power, and a good ground, the harness connector is usually located under the seat on the front of the rear fender then keep tracing the wiring look for obvious harness damage caused by the rear tire.
If you still can't find the malfunction backtrack from the rear fender wiring harness connector.
If one side does not work you could have a faulty turn signal switch or module check for continuity.
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. LED indicator lights XJRider com YAMAHA XJ LED SIGNAL FLASHER RELAY FIX Yamaha XJ600S 1992 Service Manual OEM parts for Yamaha Yamaha Diversion XJ600N Owner Manual
Hi, Anonymous your bike runs a piston with a 10:1 compression ratio so your compression test should be around 160 PSI to perform a proper compression test you need a pressure gauge either threaded or push in. You will get a higher more accurate reading when the engine is at normal operating temperature along with burnt fingers if you are not protected or careful, cold testing works just fine and it the method I use 99% of the time. If your bike has cams and valves you need to make sure your valve clearance is within book specs Always blow forced air around the spark plug before you remove it to eliminate any uninvited contamination from getting inside the cylinder. Install the compression gauge, twist the throttle grip to the wide open position and kick or hit the starter button long enough for the engine to turn over 5-6 times. Record the reading and repeat the process 3 times to get the average reading. Single cylinder engines must have a minimum of 100 PSI anything less call a Priest for Last Rites, it's time for a top end overhaul. Multi-cylinder engines must have no more than a 10% difference between each cylinder, for you high- performance ******* no more than 10 lbs. per cylinder. To run on today's fuel most bikes have pistons with compression ratio's designed to give acceptable performance using 87 octane graded fuel, this means the average compression readings on most bikes will be 125-150 PSI. I have gotten readings of 200+ on some big inch V-Twins and Thumpers but these are rare #'s and require high octane fuel to eliminate cylinder ringing or "PING" For more information about your issue and valuable "FREE" downloads that you will need please click on the blue links below. Good luck and have a wonderful day. xj600 1992 problems Yamaha XJ600 Diversion Specs and Info WhiteDogBikes Blog Yamaha XJ600S 1992 Service Manual OEM parts for Yamaha Yamaha Diversion XJ600N Owner Manual
Hi, Anonymous a motorcycle starter relay is an electronic mechanical switch that has a small coil winding around a piece of metal that requires low amperage and thin wires to be activated. When you turn on your ignition switch power 12 volts is sent to the relay coil which in turn becomes a magnetic contact point that pulls a spring-loaded contact point to itself completing an electrical circuit that allows more amperage necessary to be accessed by the starter solenoid which in turn acts in the same way as the relay but on a larger scale with its stronger heavier contacts making available the necessary amperage to turn the starter motor. If your battery has low voltage it, in turn, makes the magnetic contact point weak in trying to pull its counterpart to make a connection. These relays are usually encased in a plastic housing that may or may not be sealed depending on the quality of the product. When activated they will produce a small amount of heat to their metal components which in turn can create the perfect environment for condensation to form depending on weather conditions and how careless you may be with a water hose or sprayer while washing your bike. After a period of time, several months to several years depending on circumstances this condensation is the start button for electrolysis and the slow build up of corrosion which ends by preventing the magnetic contacts in making a solid connection and alerts you to this situation with the customary greeting "CLICK". The relay is inexpensive and needs to be replaced however in a pinch they can be forcibly opened cleaned and resealed with silicone. In a nutshell, motorcycle starter relays take in low amperage and send out higher amperage when activated and for curious minds, the voltage remains constant at whatever your battery reads at the time, this is why a fully charged battery 12.5 volts or better is the best insurance on preventing starter motor problems and increases the longevity of all the starter circuit components. For more information about your issue and valuable "FREE" downloads that you will need please click on the links below. Good luck and have a nice day. Bike won start just buzzes Loudly http://www.triumphrat.net/air-cooled-twins-technical-talk/165140-not-starting-just-buzzing-sound.html Yamaha XJ600S 1992 Service Manual OEM parts for Yamaha Yamaha XJ600SF Owner Manual