18-04-17, 10:07 AM
The bike ran fine with the pump disconnected and a temporary tank plumbed straight into the feed to the carbs.
The pump had been shutting off ok, and it was only leaking when running, but as I've tried pretty much everything else at this point I've ordered a second-hand replacement pump off ebay and will give that a try.
Plan B, if that doesn't work, then I'll have the carbs off (yet) again and give them another clean. I think that the most likely culprit at this point is a valve which is sealing just well enough to stop the fuel at atmospheric pressure, but not well enough to stop the fuel when the pump is running and the engine is vibrating.
If Plan B fails then Plan C is to get the carbs cleaned and overhauled by a professional.
The pump had been shutting off ok, and it was only leaking when running, but as I've tried pretty much everything else at this point I've ordered a second-hand replacement pump off ebay and will give that a try.
Plan B, if that doesn't work, then I'll have the carbs off (yet) again and give them another clean. I think that the most likely culprit at this point is a valve which is sealing just well enough to stop the fuel at atmospheric pressure, but not well enough to stop the fuel when the pump is running and the engine is vibrating.
If Plan B fails then Plan C is to get the carbs cleaned and overhauled by a professional.