Help thread: Yamaha R6 runs only with choke after carb cleaning

On Yamaha R6 runs only with choke after carb cleaning, mark every original setting before touching screws. Then check fuel flow, float height, air leaks at the intake boot, and pilot jet cleanliness. Tiny dirt can create a very expensive-looking mood.

If this involves road testing, keep it legal and safe. A quiet car park teaches more than a panic run down a public road. That is how I would approach Yamaha R6 runs only with choke after carb cleaning before spending money.

Thomas Spagnoli: workshop approach for Yamaha R6 runs only with choke after carb cleaning

Before buying anything for Yamaha R6 runs only with choke after carb cleaning, I would build a small test path. The cheapest repair is often the one where you do not replace a good part.

1. Confirm valve clearance and ignition health before blaming the carburetor.
2. Check fuel flow, float height, blocked pilot jet, air leaks, and the condition of the intake boot.
3. Return to a known baseline setting before tuning. Random screw positions make diagnosis muddy.
4. Read the plug after a proper test, not after two minutes of idling in the garage.

The best next step is the one that can prove something. A test that only creates another guess is just a more expensive guess.

The free Motorcycle Mechanics Course on this site goes through this exact thinking: electrical checks, fuel checks, mechanical baseline, diagnostic flow and safe habits. It will help you approach Yamaha R6 runs only with choke after carb cleaning with less guessing.

Post the machine model, year, mileage and one clear symptom, and I would choose the next test from there.

Would you test Yamaha R6 runs only with choke after carb cleaning cold first, or wait until the symptom appears hot? Mine changes after about twenty minutes.

I am going to do the boring checks first. Annoyingly, the boring checks are starting to sound like the correct checks. At least now I know what I am trying to prove before spending money.