Hi I have a vfr800fi 1998 the bike runs but dies sometime I can start it up ride a bit then cuts out again can some one help please

SOURCE: Wont start

FIRST thing to check is spark plug ,make sure it is sparking ,if it is and is wet change the plug .If plug is dry it could be the carb needs cleaning out if it has beesn stood for a while

SOURCE: bike shut off when riding.

Hi and welcome to FixYa,

Your description indicates an electrical malfunction. Offhand, the jump start and charging is significant. This points to the bike's battery not charging. Suspects would be:

• voltage regulator (most likely);
• connectors to voltage regulator (likely). Check/clean corrosion/burnt marks;
• stator and/or the 3 wires coming from it (least likely).

SOURCE: I HAVE AN OLD YAMAHA SR 125 ITS REVS GO UP AND

Remove the water trap bowl at the bottom of the petcock, (gas valve). Any water or trash in the bowl? Drain a cup of gas from the tank. Any water or trash in the cup? Dump it, clean it and re-mount it, ( not all bikes have a water trap bowl ).

Drain the carburetor. There should be a screw on the lower side of the carb float bowl. Remove the screw then replace it after the fuel drains. Turn the gas back on and wait a minute for the carb to fill with gas. Install a new stock NGK spark plug and try to start the engine. If the bike doesn't start and run properly then shut off the gas and remove the carburetor from the engine.

Remove the float bowl and clean the entire carb with a spray carb cleaner from the auto parts store. Wear protective goggles to avoid getting spray in your eyes. Spray into all the little airways and fittings in the carb. Remove the two screws on the outside throat of the carb and spray into the screw holes as well.
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Be sure to put these two screws back in the same hole they came out of. IMPORTANT > do not tighten these two screws down. Only screw these in until they LIGHTLY seat. Now turn each screw one and one half turns outward. Put the rest of the carb back together, clean the air filter and install the carb. Let the float bowl fill then start the engine. Set the idle speed with the idle screw. This process should get you back on the road.

Since you mentioned uneven idle revs, be sure the carb and manifold are on tight and also tighten the cylinder and head. Air leaks can screw up the idle.

Please rate this solution. Thanks speedfreak41

SOURCE: my name is james, i have a 1982 yamaha xt550 that

The first place to look is the Kick stand safety switch,This will cause the problems you are having,If it is going bad or not contacting completely.(You can bypass to test it,if need be )

Check that and then post back if you still have any problems.

SOURCE: motorcycle dies while riding,like gas is cut off

Check fuel pump. You might have a bad diaphragm.