Fixed vibration, now have a noise: FIXED 600KM update

[Mr Wazzock]

Pump is switched by the left throttle body ECU. Pretty sure no relay is involved. None shown for that on the wiring diagram anyway. The 3 relays under the seat are only to do with electric starter.

[phughes]

Yeah, I would start by looking at connections, and switches. I didn't think it was on a relay either. Thanks Mike.

[Geno89074]

So I had some diagnostic time today. Since this problem started about a month ago I have replaced the battery, checked the charging output at the battery with a volt meter, checked and set the valves, did a compression test (165 psi +/2 psi both cylinders, cold engine, branch tubes removed and throttle butterflies open).

Problem persisted. Removed the seat and tested the 3 relays. Interesting thing: Removed each relay 1 at a time. Starter wouldn't engage but the pump would still prime each time. Cleaned and checked all the relay wire spades and reinstalled with dialectric grease. Then hooked up obd wizpro and found the idle was low (1000 rpm) and the throttle bodies were not balanced above 1800 rpms. Turned the idle up to 1080 rpms and balanced the cables above 1800 rpms. Took it for a 5 mile test ride the stalling hasn't happened yet so I am crossing my fingers for now. Did order a spare relay from Heindl today along with some gaskets. I am hoping this works, have been worried that it could be a bad ecu since the wiring diagram shows the power and ground for the fuel pump operation comes from 2 pins on the left hand ecu.

[Mr Wazzock]

Interesting thing: Removed each relay 1 at a time. Starter wouldn't engage but the pump would still prime each time.

What did I say, the pump is controlled directly by the left cyl ECU, the relays have nothing to do with it.

[Geno89074]

Interesting thing: Removed each relay 1 at a time. Starter wouldn't engage but the pump would still prime each time.

What did I say, the pump is controlled directly by the left cyl ECU, the relays have nothing to do with it.

Yes Sir....I am checking connections and the wiring harness as I am able to
Bike is still stalling, both at idle and while on the road.
If it is the ecu i will be absolutely astounded and pretty sad