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Breva 750 leaking rear main bearing

Now all back together and running again. Thanks to all those who responded in this thread.

Thanks also to Mario from Thunderbikes and Charlie J.

Now if I can just figure out why my EFI light comes on now... :oops:

The engine starts, idles and runs just fine. Prime suspects are the Lambda sensor and the head temp sensor, since these are the only ones that got disconnected (well, the fuel pump as well, but that works OK.)

Upon inspection it appears that the wires on the lambda sensor could have been crushed against the centrestand. Is it possible to bridge connections on the diagnostic plug to get a fault code like a lot of EFI systems, or do I need to get the proper interface?

Using a multimeter on the lambda probe, how would I tell if it is faulty?
 
rossw said:
Using a multimeter on the lambda probe, how would I tell if it is faulty?
Click to expand...

What to look for is here http://www.lambdasensor.co.uk/main/mtesting.htm Your Lambda sensor has four wires. Two for a heating element (the black wires if I remember right), and two provide the voltages read by the ECU. My suggestion is to just purchase VDSTS. You can see what the ECU is reading in real time. If you plan on keeping the bike for any length of time it will be well worth the investment. I would also open the sheath where you thing you may have damaged the wires and inspect for damage.
 
Thanks, John.

I got my multimeter out and ran some checks. It seems the heater circuit on the lambda probe is open circuit at the plug. I probably broke the wire getting it off. :oops:

I found that after a few blocks the light goes out and the bike continues to run normally, suggesting that the probe is working ok once it gets hot enough on its own.

Reckon I can live without a heater for a while. I've ordered a VDSTS from Todd, so we'll see what happens when I hook it up.
 
Thanks, John. I'll remember that link. That's a pretty good price compared to what I've seen elsewhere. The problem appears to have fixed itself. No further sign of the EFI light. :?

This tends to support what you have suggested Pete. I DID move a lot of wires around, including unmounting (but not disconnecting) the ECU. Perhaps they have vibrated back into place? I suppose I should be more vigilant with the cable ties than I have been.

I don't trust things that fix themselves. Time will tell. I'll see what the VDSTS tells me once I get it. Does the VDSTS allow me to apply patches? Or do I need to take it down to Sydney?
 
rossw said:
. Does the VDSTS allow me to apply patches? Or do I need to take it down to Sydney?
Click to expand...

No updates to the ECU with VDSTS. Map updates can only be done with dealer equipment, Axone or Navigator.
 
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