hello everyone,

I researched it on the forum, and it has a lot of information about the problem, but not with the same characteristics.

i'm facing a common problem apparently, the infamous p0300 code. but the way it's happening is quite different. The car starts normally showing no failure or variation in RPM, however after turning the car on and off a few times in the same day, it starts to fail right after the start, really with the feeling of missing some cylinders. The particularity is that after turning off the car, when I turn it back on after a few hours, the problem disappears. I've already made some attempts to solve the problem. I changed the plugs for Ngk iridium, I

changed the coil package and the maf sensor. Has anyone ever experienced this ?
thanks in advance.

the car is fairlady z33 - 2004 (I live in Japan) , with 87,000 km. sorry for my english, it is not my native language.

 

Welcome. Most likely it’s a vacuum leak, usually you can hear it when the engine is running, like a light whistle. Best bet to find it is to spray the intake area with some Wd-40, or brakeclean while it’s running and listen for the idle to change, it should increase or decrease.