2006 Ruckus Dies (sometimes) while opening throttle

[unwired]

OK for about the last year my 2006 Ruckus has given me no joy. I just can't trust it to not strand me. Here is the deal.

It usually starts no problem.

When opening the throttle it dies (sometimes not all the time).

Last week I started it up it ran great. I ran it for over a half an hour up and down hills. No problem at all.

Today I start it just fine. Start leaving the neighborhood and all of a sudden it dies at a stop sign. Starts right up but won't run if I give it throttle. I start walking it back to the house while idling trying to coax it to run and it starts to run at some reasonable level.

It is completely stock except for a Polini variator put in over 3 years ago. I have torn apart the carb, cleaned it thoroughly used a wire to ensure nothing clogs the jets. I have done this at least 3 times. I have drained the tank and replaced with new gas. I have changed the spark plug. I have added Seafoam to the gas. Sometimes she runs sometimes she doesn't.

I even took her to the Honda dealer and have them do a full carburetor cleaning and check up. They also set the valves and replaced the gas filter. Of course it ran well at the dealer and then stranded me 2 days later 3 miles from home.

I am thinking of completely replacing the carb with a brand new carb. I can't have it be unreliable.

Yes I have checked the threads here on Ruckus' that die when opening the throttle. Issue is usually related to the main jet, an air leak or air fuel mixture. All those things have been checked.

If I wanted to completely rule the carb out of the equation and just buy a new carb which of the following (from Ron Ayers) would I buy or does it not matter.

011 16100-GEZ-613 CARBURETOR ASSY. 1 $135.41
011 16100-GEZ-671 CARBURETOR ASSY. 1 $149.15
011 16100-GEZ-672 CARBURETOR ASSY. 1 $149.15
011 16100-GEZ-673 CARBURETOR ASSY. 1 $149.15

She has about 8500 miles on her and ran great until this started last summer. I am about to lose my mind. Any help you can offer is much appreciated.

Thanks.

[chanito]

You need the -613 For an '06 and later

[unwired]

Thanks Chanito.

I think I have located the problem and it wasn't the carb. Not 100% sure but at least 90%. Ruckus would not start a lick so I removed the floor board and seat expecting to remove the carb and do a complete carb clean once again for good measure when I noticed something. The fuel line feeding the check valve appeared to have a slight kink in it right where the check valve connected (this is on the fuel pump side of the check valve).

Apparently one of the techs that I let work on it used a thin wall fuel line that was similar to what you might find on a lawnmower. Instead of the fuel line feeding straight into the check valve the check valve was at about a 105 degree angle. Over time this caused the fuel line to bend down causing a slight kink. I thought "this could explain a lot". Depending on how bent the fuel line was it could either restrict or cut fuel entirely to the carb,

Off to Advance Auto and I bought a high quality automotive fuel line. Replaced the entire line from the gas tank through the filter into the fuel pump and up to the check valve. Put everything together and first decided to check if fuel flowed from the tank through the fuel pump when starting. After a few starts to prime to pump I got a nice smooth drizzle. Then I attached the check valve and checked to see if gas flowed through the check valve. It did as well. So at this point I was confident fuel was flowing to the carb.

Things started slowly as it took time for the carb to refill and the engine to warm up. But once warm I took it for a 7 mile drive with no issues. Turned off and restarted several times with no problems. There is still a little hesitation but that could be some buildup in the carb. I have treated the gas with Seafoam, filled the tank with ethanol free gas and will try her tomorrow. If she starts right away and can run for an hour or so then this has to have been a big part of the problem. Something so simple.

I have rerouted the fuel line to ensure straight line flow and zip tied everything in place.

Time will tell but it is looking good right now. First time to start right away in over a week. And first time to run for an hour or more without refusing to restart in almost a year.