Problem:
Bike will not start after having been down, once in a while a backfire. Continued starting will result in fuel in the exhaust. On occasion it sounds as if she will pick up, but dies again. This whilst playing with the throttle a bit. We had her running for some time on Sunday, but the next day it was same old.....
What we have done:
Check battery voltage - OK
Check injector pulse with LED – OK
Check loom between injectors and ECU – OK
Check injector resistance – OK (16 Ohm)
Check injectors outside of engine – OK (bit of doubt about the amount, but they all 'squirt' – OK
Check fuel pressure – OK (after change of pump and fuel pressure regulator)
Check fuel hoses – OK (part renewed)
Check fuel return to tank - OK
Check coils – OK (Prim 2.5, sec 12.5K)
Check FI computer – OK (replaced with known good part, same issues)
Check the spark plugs – OK (the 'in-line-tell-tale light' blinks)
Check the AMM – OK (Flap moves, electrically measured and is OK)
Check connection between AMM and plenum – OK
Check cooling water temp sensor – OK (2.5K at 20C)
Cleaned all connectors in sight
Still to do:
Check compression, however bike has ran OK
Measure amps during starting
Ceremonially burn the bike!
On completion:
Oil change
I appreciate your thoughts on possible other items we can look into. Thanks!