No start – ideas please

[restinthesun]

Update: Still not working. FML.

I checked the fuel delivery and all seems to be working. Drained tank, refilled with Super 93 and HEET. Tank is spotless. All connected as should be. Changed the filter. Took off gas line to injector rail and fuel happily spat out when I hit the start. Had pressure. That means the Fuel Injector relay is good, correct? That tick those boxes, Laitch?

The "wants to go" comment came from the few ignitions, or pops, I could hear and smell. Seemed to burn once or twice then stop. When I put 10ml of oil in the spark holes, it smoked. Logical that it's got spark and fuel, no? Will try to capture on video next I'm at the bike. Probably easier that way.

Battery is brand new and tested for 12.8V. All sparks new, visual confirmation they sparked against a ground, so not spark wires or coils, seemingly.

Other ideas happily accepted. Injectors gummed up? Way to test that?

The Whacking at start up is new and sounds terrible to my sensitive ears. I've had the "whacking after warm up" which I believe I enquired about here. It goes away when I pull the clutch and seemingly wasn't an issue. If it's just the alternator, would it stop the bike from starting?

My radiator fan never worked so great. She always wanted to overheat if I did a 25 min highway stretch and then sat in stop-go traffic for any length of time. Was planning on checking/replacing radiator or temp sensor. That shouldn't affect start up though, right?

Thanks, all.

[Laitch]

That means the Fuel Injector relay is good, correct? That tick those boxes, Laitch?

The injection relay still could be malfunctioning. It was suggested you swap it to find out. It was also suggested you check the fuel pressure regulator vacuum line for fuel infiltration. Have you done either of those checks?

There are already posts about how to check injector function by removing the rail with them still attached; that is, however, one of the classic methods of igniting your moto if you aren't careful. :giggles

I don't consider the radiator fan or alternator directly related to the starting problem.

[Martin]

If you crank the engine over with a fully open throttle they normally flood. Try cranking over with a full throttle then check the plugs they should be visibly wet.
Regards Martin.