350Z/G35 P0300 Code 

I have a p0300 I really don’t know what it might be now hearing this just makes me want to sell the car lmao

Mine just recently threw the P0300 code and I had a bad coil pack on cylinder 4

my car was runing fine, saw a oil leak from valve cover and decided to service it, after new aluminum valve covers with new gasket, new coils, new exhaust VT solenoid (had code for it) and plenum spacer, car has a p0300 smh

Everything you describe is happening to me 😩

Mine had the same code, took it to the shop and they diagnosed it as low oil. Was down 1 1/2 quarts. These cars burn oil fast due to bad piston rings. If the oil pressure is low, it can cause poor valve timing and misfiring. Check your dip sticks before you start throwing money at it. Hopefully you guys will get lucky and it's something simple.

this code started showing up after I changed the knock sensor... could it be related to me removing the intake manifold?

Have gas smell going through my Exhaust but the smell of gas I can smell gas only on 1 side of valve cover yes I have a small oil leak from valve cover.but everything u just said holy crap u put alot of coin in car so Idk if i should bother changing plugs. Forget buying engine my car has 200,000 should just run into ground she still starts lol I get new car at some point any suggestions? How do I do compression test?

Did swapping the motor fix the issue ? Im having the same problem ive replaced lots of parts and no juice

could it be bad cats?

OMG I did all of what he stated and still misfire wtf this happen after I changed my knock sensor and valve cover....

Yo i have this same issue but my noise keeps changing everytime I change something

I have a p0300 code, 2003 g35. Idles rough asf, changed coils and plugs and I can smell gas from my right exhaust side.

My 04 g35 sounded exactly like this until I switched ignition coil 4 and 6 must of mistakenly plugged them in the wrong way after the motor swap. But then once I switched the plug in from the harness from 4 to 6 and 6 to 4 car worked how it used to but when tried to take it out for a test ride car temp needle went up so I turned the car off. Any reasons you think this is happening ?

Damn true bro

Hi I just got the code but I doesn’t seem to idle that bad it only moves a tad bit not even noticeable movement on the rpm needle, could there be any other possible problems. I will be Checking the spark plugs and coils in the morning

My car is doing same shit I have replaced everything but not did compression test

Did u fix it ?

I just came to the dealership to have them check it they stated my passenger side valve cover one of the cylinders getting to much air in it and told me they need to disassemble it for $1,750 to check to see what's wrong so I told them I have to think about it smh...

Can a bad alternator throw code 300 misfire I got new battery new starter new plugs n coils at idle rpm goes up and down then stops then does it again it’s a 04 g35 original parts so I’m guessing alternator is 22ys old for yesterday driving home car just cut off I got spark and power it won’t stay on it dies out

Is there a way I could send u the noise so u could lmk what to do or what it is?

Ouuu, he cute hehe. But I'm glad you found the problem. Good luck!

Great video I have infinitiy fx35 have code p0300

Dude you drive your car and trying to us what is wrong and you talk to much stop driving and get to the point

Probably bad injecter bro