my 01 929rr wont start

i have spark in all coils /plugs,fuel pump primes and runs, fuel lines are brand new. bike throwing codes for faulty injectors an that's it. it i put tiny bit of starting fluid in intake it will fire up but wont stay running . now today i had a odd idea i keep tapping the start button maybe 4 or 5 times then hold an it will sput for a sec like it was gunna run. i also to a wire an put it on the ground side of the injectors an tapped it on the frame an they all clicked any ideas on what i should do next

 

Check the ecm ground. The injectors have constant power and ground through the ecm to work. Do you have a power commander?

 

no power command. what pin is the ecm ground?

 

Green. Its a single ground to the frame.
Make sure you have continuity for the injector driver wires (the ones that each have their own color) through the injector harness plug and all the way to the ecm.

 

ok awsome one step closer got a pulse in all four injector clips still no start now its throwing code for all 4 faulty injectors?

could it be time for new injectors?

still got spark an fuel pump still priming an running.

 

ok my buddy just brought me a fuel test i have very low fuel pressure he brought a injector cleaner an the injectors an spraying great so im lost

 

A faulty FPR would cause that.

The spring or diaphragm in it are worn and it's letting fuel pressure bleed off and return to your tank.


Don't know how it'd be low enough to trigger a code though...

 

Check the hoses that connect the pump and filter together. If they split, you will get low pressure to the rail.

Use a vise grip to clamp the return line and see if the pressure comes up. That will rule out the regulator sending the pressure back to the tank if its still low.

 

After cleaning them 6 times an spraying great the code has stopped popping up idk weird but once I get a chance will clamp the return line an see if the pressure builds up an all the lines an fuel filter are new in the tank only thing not new is pump.

 

Ecu was fried put new one in runs great