2019 Yamaha Sidewinder running bad!

[19sidewinder]

hey guys i have a 2019 sidewinder that im having issues to make run correctly. When i start up sled it sounds like it is running on 2 cylinders and continues to run like this even under throttle. Ive done leak down test with good results, checked timing and it is correct, checked for boost leaks no issues, changed map sensor, changed knock sensor, changed coils. If anyone has any other ideas feel free to help!

Mod list
td multimap bundle
3 bar map sensor
fuel pressure regulator
upgraded fuel pump
02 module
intake
3" exhaust

 

[MrSled]

Did you change the plugs?

 

[sideshowBob]

If it only effects one cylinder and the engine checks check
-spark plug
-coil
-fuel injector or its signal

 

[19sidewinder]

Did you change the plugs?

Yes I did I’ve tried multiple sets of plugs

 

[19sidewinder]

If it only effects one cylinder and the engine checks check
-spark plug
-coil
-fuel injector or its signal

All 3 plugs look identical when removed but sounds like down a cylinder would you try stator or Ecu?

 

[Turboflash]

Compression test.
Check signal and voltage at connector that powers the coil.

 

[19sidewinder]

Compression test.
Check signal and voltage at connector that powers the coil.

What would I be looking for for a signal/ voltage from coil plug in? And I did a leak down test under 5% on each cylinder should I do compression as well?

 

[actionjack]

Was this sled running fine previously this season?

 

[19sidewinder]

Y

Was this sled running fine previously this season?

Yes was running fine 2 weeks ago then just started acting worse and worse

 

[no1b4me]

How recent did you fuel up when this condition started ?

 

[19sidewinder]

How recent did you fuel up when this condition started ?

I’ve tried that to pumped all fuel out amd put fresh gas in recently as well

 

[no1b4me]

Does it still behave this way when it's up to temperature ?
What is the voltage output when running ?

 

[Turboflash]

For coil:
1. Test the 2 terminals where connector plugs in for resistance with DVOM. Spec is 1.19 to 1.61 ohms. Doesn't matter which lead goes to which terminal when testing.
2. Connect red DVOM lead to one of the top terminals. Connect black DVOM lead to bottom of coil where it contacts spark plug. Resistance spec is 8.5k - 11.5k ohms.
When running, is charging voltage above 14 volts?

 

[19sidewinder]

For coil:
1. Test the 2 terminals where connector plugs in for resistance with DVOM. Spec is 1.19 to 1.61 ohms. Doesn't matter which lead goes to which terminal when testing.
2. Connect red DVOM lead to one of the top terminals. Connect black DVOM lead to bottom of coil where it contacts spark plug. Resistance spec is 8.5k - 11.5k ohms.
When running, is charging voltage above 14 volts?

Checked ohm reading 1.6ohms across and 10k on second test also checked voltage on incoming plugs to coils one was same as battery voltage other side hooked test light up to and it flashed so that’s working as well. Sled idles at between 14.2 and 13.7v

 

[Turboflash]

OK. Coils are good and wiring to connector is good. Since you said you tried new plugs, I would deduce ignition is not the issue.
I've not seen a sled idle w 13.7 volts. Is battery good? Load test?
So next I'd test fuel injector. Spec is 86.4 - 105.6 ohms across the two terminals.
Have you done a compression test?