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Old 11-22-2017, 09:53 PM   #1
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Will not start

4 years ago collided with car. hadn't tried to run it since. Just sat in garage this whole time. Now I'm itching to ride again, bad. BUT...
Bike will fire up when using starter fluid, but dies after. Checked petcock and fuel flow no issues. Fresh fuel and carb was rebuilt and cleaned out. Must be issue between the fuel valve and carb intake to cylinder. Or could it be something else. I want to say its not getting fuel to the carb, but when i disconnect the fuel lines from tank, they have fuel in them. Is it at all possible they could be clogged? Thats a pretty big diameter.

And when testing the vacuum to the petcock for fuel flow, I got a proper size hose and connected it to the vacuum port and began to suck and it would initially open up and fuel would start to flow but would eventually stop. Does that suggest the diaphragm needs to be replaced? How exactly is that supposed to work?

Also, how do I drain the fuel lines at the carb when I know the bike will sit for a while? Any pictures would greatly help identify what it is as well.
I sure would appreciate any help on this, esp if wanna swing by and help me out, or I'd be happy with a phone call too 7.1.3-9.0.0-6.4.5.3 mike
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Old 11-23-2017, 08:36 AM   #2
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Old 11-23-2017, 10:11 PM   #3
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fresh gas, even added in some stabil and a bit of octane booster to this tank
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Old 11-24-2017, 09:34 AM   #4
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It sounds definitely like a fuel issue.

To clarify, what bike are we talking about?

To answer your questions:
The petcock should flow fuel as long as there is a vacuum. The diaphragm might need to be replaced. I've also seen petcocks that were full of and wouldn't flow right. Might be a good idea to see if there is a rebuild kit available.
Each carb should have a screw at the bottom of the float bowl and a piece of plastic hose hanging down. To drain the fuel line and float bowl, turn off petcock, open the screw and fuel should run p
out of the hose.

My guess is the carbs need to be cleaned. I know you said they were but I'm betting they weren't cleaned completely.
If it was me, I would order new jets and replace them while you're at it. They are cheap and then you can be sure they are clean. It's almost impossible to get them really clean inside the tiny orifice.
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Old 09-28-2018, 04:29 PM   #5
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Quote:
Originally Posted by bumblebee View Post
It sounds definitely like a fuel issue.

To clarify, what bike are we talking about?

To answer your questions:
The petcock should flow fuel as long as there is a vacuum. The diaphragm might need to be replaced. I've also seen petcocks that were full of and wouldn't flow right. Might be a good idea to see if there is a rebuild kit available.
Each carb should have a screw at the bottom of the float bowl and a piece of plastic hose hanging down. To drain the fuel line and float bowl, turn off petcock, open the screw and fuel should run p
out of the hose.

My guess is the carbs need to be cleaned. I know you said they were but I'm betting they weren't cleaned completely.
If it was me, I would order new jets and replace them while you're at it. They are cheap and then you can be sure they are clean. It's almost impossible to get them really clean inside the tiny orifice.

Thx bee, sorry for long time response. I appreciate your help
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