2015 odyssey runs rough when cold.......advice

[mattd]

Look at both. When you notice the fuel strategy go from open to closed loop, monitor the fuel trims.

 

[The Critic]

At 90k?
I thought valves were not until 150ish?

Also, is there a way to measure the map sensor to tell if my valves are out of spec?

Thanks critic

MAP sensor voltage at hot idle.

 

[nicholas]

Thanks guys
Will re test tomorrow

 

[Gillsy]

Hi Everyone,
We have a 15 odyssey that runs rough when the engine is cold, until warm up 5-10 mins of driving.
It has 145K KMS or 90k miles.
I have replaced the spark plugs 2 months ago - put a VCM blocker on it - did 5 trans drains and refills - new vvt spool valve - right side engine mount. --Cleaned the egr before the winter.
Run 2-3 treatments of SL-1 redline over the last 2-3 months.
Fresh oil change 500 kms ago -0w-20.

After 5-10 mins of driving the engine runs great. Temps here are -10c to -20c on average.
Just started doing it.

No engine codes- no pending codes?
Any help on where to look would be great. Thanks

Scope for intake valve deposits. Misfire when cold, but not so much when warmed up.

 

[nicholas]

Scope for intake valve deposits. Misfire when cold, but not so much when warmed up.

3 bottles of redline over 6 tanks of gas....I hope the valves are not gummed up.
Thanks for the tip.