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Honda XL350R (1984) carb problems above half-throttle

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Last year I disassembled and separated my twin carbs to clean everything and see what jets the previous owner had in there. Although I wrote all this down, I don't have the info here right now. I machined a U-shaped jig to carefully adjust the float levels, which were not too far from spec. After carefully cleaning and reassembling everything (which went fine), I am having a problem with bogging when I open the throttle more than half-way. The bike runs great below half throttle. In searching this and other forums, I have seen people describe this problem, but not for my bike, and none of the posts had a definitive answer. So here are my questions:

1.) I understand that the second carb (on the right side as you sit on the bike) is the dominant carb above half throttle. Is this correct? If so, can I therefore isolate my problem to the right carb?

2.) We'll talk about dirty jets/carbs later. But assuming that a dirty carb/jet is NOT my problem, would it be possible that the problem is due to something being reassembled incorrectly? In other words, would the low-end work as well as it does if there were an assembly mistake on my part?

3.) Now let's talk about dirt. I think one of the other posts (not necessarily in this forum) in response to a similar symptom said that the problem is almost certainly a dirty jet. I plan to pull off the carbs tonight. Do you all agree with this as the explanation? If so, which specific jet should I focus on?

Thanks

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Never worked on a two carb single, but it seems it's lean when going onto the main jet, so dirty as you say, clogging the path to the main jet, or low fuel in the bowl are prime candidates.

 

Check fuel flow, check fuel level, tank the carb in a carb cleaner can for 1/2 hr or what the can says, risnse, then blast all the holes with spray cleaner. Cleaning may have dislodged some thing and blocked. If the main screw into the needle jet like a Mikuni, you could skip all that, take out the main and needle jet and inspect for blockage. No rubber or external parts allowed in the tank! The path from the air bleed jets (holes or brass filled holes in the airfilter side mouth of carb) will enrich if smaller, but if blocked, might cut off the fuel flow. Could be a jet needle height problem, or worn, but doesn't sound likely. Could also be way over-rich from flooded bowl, mocking a lean condition, especially if that one carb really does nothing until your on the throttle good and hard. Sunk floats or mal-adjusted.

 

Thoughts... an adult will be along to help you shortly.

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