Question about kawasaki VN 800 A Vulcan Motorcycles

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Had carb rebeilt all calf removed now will not run with fuel on fuel has to be on res

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Rebuilding the carb would have nothing to do with the bike running on reserve but not running in the "on" position. Chances are you just need more gas in the tank or the "on" pipe filter inside the tank is plugged up with trash. Please rate my answer, thanks.

Posted on Aug 24, 2010

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Posted on Jan 02, 2017

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77 kz 1000 police with 40k mi.was neglected for yrs. compression is close to 90 on all 4 cyl. have just rebuilt the carbs,put high tension leads on the coils after coils tested good at the...


Hi
It would help if you knew why it stopped years ago, wether there was a problem or it was just parked and running fine.
You have probably tried some of these but
Put the needles back in the original place, as this couldnt have changed while the bike was sitting.
make sure it has a good standard aircleaner in it.
change the oil
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As soon as I put gas in the tank it all drains out, presumably passing through the carbs and out of the air intake. bike's a 1980 yamaha maxim 650cc.


they have a vacumn opperated fuel tap, should only allow fuel to pass when the engine is running, unless you have it on pri(prime) if it runs out with the tap on run(on) or res(reserve) the tap need a kit.
unless the fuel and vacumn hoses have been mixed up

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Hi, On the fuel tap what is the Prime position function.


You have a vacuum operated fuel tap. It should have 'on' , 'res' and 'prime'.
In the prime position fuel will always flow from the tank. In the other positions the engine must be running to allow fuel to flow. If the bike has been standing for a few days, fuel will evaporate from the carbs and the bike can be difficult to start. By switching to prime for a minute, the carbs are replenished and starting should be easy. Dont forget to return the tap to on or reserve once started.

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Lt-f250x fuel vale has on- res-pri what is the pri position for


( PRI ) is the primer position for the petcock ( fuel valve) . This position is used for a couple of reason. this kind of valve works off vacuuum from the carbs, but if you run out of fuel you or remove the tank you can't create vacuum, so putting the valve into the PRI position allows fuel to flow inton the carbs without vacuum so you can start the bike. Once the bike has started you should switch the valve back to the ON position ON= normal position, PRI= primer position, RES= reserve postion. I hope this helps!!!

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What position on fuel lever is off there is fuel on, res, prime?


It is a vacumn opperated tap, fuel should flow on res or on only when the engine is running. fuel will flow on prime whether the engine is running or not.
There is no off, if fuel flows from res or on when the engine is stopped it needs a fuel tap kit. Also it is best to fix it as they have a habit of flooding the sump with fuel.

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Pet **** issues "perhaps"


Remove the petcock valve and dissasemble and clean it may have a clogged passage or this type may have bowl with a screen in side that is dirty, clean the valve with gum out and blow out with compressed air if possible.

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Where does the fuel switch need to be on a 1994 suzuki katana


i'm assuming you are talking about the petcock it should be pointed down to on PRI is prime and should only be used briefly to refill carbs after running out of fuel. res is for when you run low you don't wanna use res all the time cuz when you run out you're out and have no real warning although the kat does have a fuel guage it is still sucking all the crud off the bottom of the tank

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I have 2003 ninjia 250 it was running good then slow down and died. like it running out of gas. will restart with th choke on. then run for a few miles the die again. also it is sucking oil into the...


Fuel starvation most likely caused by plugged fuel filter. Best way to check/fix is to drain gas tank then remove on/off/res petcock assembly. Filter is removed with assembly and can be cleaned with carb cleaner, blown out with compressed air, and re-used. Do not get solvent or carb cleaner on any rubber parts as this will harden them. Re-assemble and start with fresh gas. Oil in breather is normal if not excessive and can be sign of clogged air filter or worn rings. Fix fuel and air filters and re-check. Good luck, Techjoel

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Fuel switch


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The arrow on the handle points to the position selected.

ON = Normal operation setting. Fuel will not flow through the hose to the carb until the engine is on. Gas in the carb bowl is used to start the engine. The arrow is DOWN when in the on position.

PRI = Fuel flows through the hose to the carb at all times. This setting is used if the bike has been sitting around and the fuel level in the carb may be too low to start the engine. For safety use this setting only to fill the carb bowl with gas or for brief testing.

RES = If you run out of gas, this setting will provide extra gas so you can hopefully find more.

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