Bye Bye Vacuum

[bren_9311]

So the Yamaha broke down yesterday. In the missing down of rain, I had to push it 5 mile to the garage. The guy reckons the fuel vacuum is fcuked

So he took the main vacuum of, and created a direct line to the carbs. Will this work the same?

So rode away from the garage, and it died again. He reckons it's now the carbs need cleaning. It's in the garage now getting the carbs clean. Anything else it could be.

When the bike broke down it just lost all power and then cut out. It started back up 10minutes later but,then cut out again. ?

Cheers Brendan
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[Hetzer]

Oh. So it was the vacuum, and once that was sorted it was dirty carbs that caused the exact same problem. Within minutes.

Weird, that.
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[Kickstart]

Hi

No it won't work. The early Diversion uses a vacuum fuel pump (which is pathetic). A direct line from the tank will work when there is plenty of fuel in the tank, but once the fuel level drops below the level of the carbs you will land up having no way for fuel to get from the tank to the carbs.

All the best

Keith
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[Turkish]

Fuel vacuum is fucked? What does that even mean?

If the bike has a prime position on the tap you don't need a vacuum (so an easy test).

It cut out in the rain? So water in the carbs or tank is possible, but if it sounded ok when it was running I'd suspect an electrical problem.
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[bren_9311]

He is now saying fuel pump. And that when it drops below a certain level. It won't work that's what I though anyways. Yeah it was racing when it cut out I though it might have been electrical. But then it cut out again when it wasn't raining. (after he removed the vacuum) When I get it back I'm just going to keep it topped up and take it to, a official Yamaha dealer.
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[swampy]

Racing as in an increase in revs just before it cut out ? That points to it running lean due losing fuel supply.
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[Kickstart]

[bren_9311]

Problem resolved i hope the vacuum has been cleaned out, seem to be running OK now, i just need to remember to top up before it gets to reserve (or carry a couple of spare battery's
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My opinion is neither copyrighted nor trademarked. If you like, I'll trade for one of yours.
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[Carvel]

[swampy]

[calyx]