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Old 06-21-2013, 12:22 PM   #31
indr OP
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Did the starter fluid test again. This time sprayed it on the clean side of the air filter. WOT with the starter button on, it ran for a few seconds and died.

So, is it most definitely a fuel delivery issue? With the carbs needing to come off?

What a pain.
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Old 06-21-2013, 12:37 PM   #32
chambersc
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Sorry, but yes. Fuel delivery failure. At least you know. Aren't you glad you didnt part it out? Something is keeping it from flowing. Pilot jets not as clean as you thought?

You only want to take it apart once more, so make sure its sterile clean. Surgery kind of clean.
Feed your mother from it clean.

Spray out and then blow out every jet and passage.

Then baseline mixture settings, prime position on petcock, and try again.

I've been there and it sucks and I swore they were clean too.
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Old 06-21-2013, 12:54 PM   #33
indr OP
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Damn. What are the chances of BOTH the carb's fuel settings be screwed? Would the bike start up if only one was clogged?

Sounds like a project for tomorrow.

Last time I soaked them in Pinesol. I'm guessing some remained stuck in there. Either that or something crawled in there and layed eggs.
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Old 06-21-2013, 01:02 PM   #34
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I'd recommend getting a can of spray carb cleaner, the kind with a little plastic straw. Use this to squirt through all the tiny tiny passages to make sure they are clear (after removing the rubber bits of course, the cleaner will not be good for them). Also make sure the floats are installed correctly. Some can be installed upside down,ask me how I know that... They don't work too good like that.
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Old 06-22-2013, 04:01 PM   #35
indr OP
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Bump

Pulled the carbs out. Cleaned and blew every single hole. Changed four pair of gloves to avoid contamination. Put it back together and installed it. Nothing changed, at all.

Again, tried the starter fluid in the airbox and it ran and shut down again.

So, what's next?

I'm thinking it's the coils. I'm getting a spark, but it's not sufficient to ignite gasoline (with it's higher ignition temp). Also, FYI, I am using 18 AWG wires running to the coils. Could this be causing not enough current reaching the coils and a spark too weak to ignite gas?
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Old 06-23-2013, 11:55 AM   #36
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Bump. I have also tried fresh gas from a different gas station. No go.
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Old 06-23-2013, 12:27 PM   #37
Tim McKittrick
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I assume you made sure in the above test that gas was actually present in the carbs? I have had at least one occasion a machine that had a small wire mesh filter above the seat for the fuel inlet valve in the body of the carb itself, and this was keeping the floats from filling properly. Cleaning required removal of the seat and mesh.

I would keep on the fuel track if starter fluid is making the motor go, at least until that avenue is exhausted.
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Old 06-23-2013, 12:37 PM   #38
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OMG. It's running. I needed to turn out the idle mixture screw another half turn. funny how these carbs need minor adjustments without which they won't work properly.

It's working!!!! Thank you for everyone's help along the way.
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Old 06-23-2013, 02:21 PM   #39
AustinJake
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Quote:
Originally Posted by indr View Post
OMG. It's running. I needed to turn out the idle mixture screw another half turn. funny how these carbs need minor adjustments without which they won't work properly.

It's working!!!! Thank you for everyone's help along the way.
Were you ever using a choke/fuel enrichment knob?
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