Why does 2005 kawasaki zx6r have problems with their fuel injection systems?

Did you disconnect the battery? Does it have an immobilizer? It certainly seems to be a known issue!

https://www.google.com/search?q=2005+kawasaki+ninja+zx6r+fuel+light+flashing

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first check pressure at fuel rail, if low or no fuel present change filter and check again, if still no go, fuel pump is bad

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try water remover in the gas and use good fuel from good stations

no it would be so expensive you would be better off just trading up to fuel injection on the later model, we are talking $1000's just for the parts

no fuel will definitely be a problem. make sure all connections are good.

the flashing " f i " light on the spedo is the "fuel injection" on-board diagnostic system light, suggestion: check under the seat there is a yellow wire coming out of the ECU that is touhed to chasis ground in order to retreve the trouble codes, the wire may be pinched and contacting ground, causing the light to flash codes.

That blinking "Fuel" indicates a problem with your injection system, probably related to the power commander install and subsequent removal. There isn't much you can do about it if resetting the computer's brain does not work. Disconnect the battery and unplug your computer connection for about 15 min to reset it to default fuel mapping. You need special equipment to read any codes it set so if it doesn't run after a reset you're probably going to have to take it to a shop.