Why isnt there any fuel flowing from tank to carbs on my 2000 suzuki gsxf 600? No clogs in tank

Question edited for a lot more clarity, full 'year make model'..
Question moved to model category.

Of course if it is fuel injected, but you are near the crossover year. Do you see carbs?

https://www.google.com/search?q=2000+Suzuki+Katana+600+does+it+have+a+fuel+pump

https://www.motorcyclespecs.co.za/model/suzu/suzuki_gsx600f_katana%2000.htm

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1. Make sure tank has fuel and is not stopped up. Make sure petcock is clean. If this is a vacuum feed - make sure the vacuum hose is not cracked or have any leaks. Disconnect the fuel like going to the carbs , then use a manual vacuum gage to pull vacuum on the petcock to see if it fuel from the carb lines. If it doesn't, you have isolated the issue! If it does flow fuel, reconnect the carb fuel lines, then remove the float bowls from the carbs then repeat the process, If no fuel is flowing out, you have found the problem, If it does flow, you fixed it

petcock screen is clogged, float needles are clogged fuel line is hooked to bung hole.

vacuum tap only flows when the engine is turning over so only has on/reserve and prime positions...prime is to refill carbs after draining...

Hi mody
check fuel flow from tank by sucking vacuum hose if fuel runs through if not inspect tap. but if yes pull out carbs and check float needle housing strainer. if is free from particles replace ignition coils and pulse generator.

You need to check and see if you are getting fuel from the tank into your carbs, if you pull the line that feeds the petcock valve off the top gas should come out. If it doesnt there is a clog in your tank. Now pull the line off the bottom of the petcock valve (this feeds your carbs) and make sure you have fuel at all setting of the petcock valve except for off. If you dont then you probably have a bad petcock valve. If you are getting fuel from the petcock vavle into you carbs then there is a problem with your carbs.

If you take the fuel bowl drain screw out of the carb (located on the bottom). Gas should run out of the associated carb, if it doesn't, then you have something stuck in the carb and one carb not working correctly can make the bike not run. If you find this to be the problem get a can of carb cleaner, take the fuel bowl drain screw out and let the gas run out, stick the red spray wand from the can of cleaner into the hole and flush your carbs out really good.

Then give it a try. Make sure that the connection between your carbs and head is tight while you are there. If that does not fix your problem you may ahve to pull the carbs and take a closer look.

Check petcock for fuel flow from the tank. if you have flow. Make sure your carb jets are free flowing. Check the degree range on your float springs. Make sure your carb airfilters are clean and free flowing, I order for a motor to operate it need fuel, fire, and air.

If the bike will run with the choke on then you have a lean fuel/air mixture condition. Most common cause is a vacuum leak or faulty pitcock. Spray some carb cleaner around the carb mounts with engine at idle, if the rpms change there is your leak.
Your petcock should have two hoses attached to it. One hose is the main flow to the carbs. The other hose is/should be a vacuum hose that allows the gas to flow (when vacuum is applied). When your petcock is in the PRI position, this will bypass the vacuum hose. Leaving it in PRI when motor off could possibly flood the engine. Check to see if that vacuum hose is attached properly with no splits or cracks near both joints. If all is attached properly your problem is the petcock itself. It has a diaphragm and 'return' spring. Weak return spring, clogged petcock, damaged diaphragm can all cause your problem. Also, after you recleaned and inspected the carbs, were they synched... if not, this needs to be done.
Good luck...i hope this helps..please rate me a fixya.

think about it ,the tank has a stoppage ,clean it chek line for kinkage and the cap may not be vented