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Discussion Starter · #1 · (Edited)
Hello all,

2006 Daytoma 675. Having a strange issue. Bikes been at Triumph dealer for 1 month and no fix. Got bike back today.
After installing sub-harness for fuel pump, fuel pump would prime and bike would just cranks. Pulled tank to check Injectors and only 1 and 2 are firing. Moved Injector to #2 spot and it fires and Injector 2 would fire once or twice then stop. Put injectors back I right spot, switched the plugs around and same thing. Checked continuity on plug #3 up to ecu and everything checked out. 12v on one side and 0v on other wire. Changed to a known good ecm amd still same thing. Dealer tried new injectors and checked harness as well. No codes in Tune Ecu for me or dealer. Any input or next steps to try would be much appreciated.
 

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Just to be clear:
When injector #3 is in the #3 spot it doesn't work.
When injector #3 is moved to the #2 spot it works.
There's no short in the wiring.
This happens with your ecu and a known good ecu.
 

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Discussion Starter · #3 ·
Just to be clear:
When injector #3 is in the #3 spot it doesn't work.
When injector #3 is moved to the #2 spot it works.
There's no short in the wiring.
This happens with your ecu and a known good ecu.
Correct, but it only sprays 2 or 3 times then stops. Both ecms. If I put plug from #3 on on #2, #2 works as normal
 

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The only suggestion I have is to check and make sure all your grounds are clean and making a good contact.
 
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