Car has struggle starting

What is your question?

My car when I start it when the engine cools down it seem to have trouble starting it has a long start and than after the engine stalls which than I retry starting it starts right up which recently the car has been running sluggish I dont think its the spark plugs cause they’ve been replaced and no check engine is on

What makes this problem better or worse?

It happens only happens when the car engine is cold

How long has your 2015 Nissan Pathfinder had this problem?

More than a year