Fixing My 350z's Misfire Again! (Detailed)

[@brandonellison2337]

You’re a lot bolder than me taking those fuel rails off with the manifold wide open. Lol.

[@sprydo7113]

Doctor Drift....love your passion on explaining things! Good call....1.) start off from the simplest of trouble shooting...consequently, we will arrive at our best diagnosis over all. Thanks for the Video👨‍⚕️....."Bell rung"🛎🛎🛎

[@mutenmonkey]

Love your vid ive been trying to find a video showing how to arrange the ignition coil harness :D youre the best!!

[@sk8punk318]

love how ur pouring gas in a styrofoam cup lol

[@PURGE-3000]

Good Job. I have an infinity. Keep getting P1273 air/fuel Ratio Bank 1 I replaced sensor and still comes out.

[@TheDemonicDeity]

This is happening to mine I just changed all coils and plugs and it’s still misfiring and all gas smell and like 2 mpg but I’m not doing this myself too much shit

[@kobiroar4221]

Great vid just about to have a go on my sons 350z , you changed 1 injector did you find why the 2 pots where oily?

[@Chris-de3vq]

did the same job to my z, you can unplug the fuel pump fuse and crank a few times to get rid of fuel pressure in the rails, gas melts styrofoam so would of just leaked right through...

[@z33tanner]

So you had an injector problem?

[@sprydo7113]

Well done..Guy. That helped, I have an 2004 350z roadster DE....good information though! Thanks again!!

[@MelMedTV]

Glad I could help!

[@willk3807]

Most common fail part is the fuel injection wiring harness. The heat kills the plastic plugs. Z1motorsports for $125

[@armyblouvet54]

You ohm out a injector and you'll never know its clogged without doing a flow test which is more involved.

[@HHJC52]

Hey Dr/Dr, I have a similar problem (never had it before) after I tried to clean my gasoline system with SEAFOAM. 3 days later car started hesitating (lost power randomly)so I went home and changed spark plugs double plat., checked coil oms (resistance 800-1000 omha), checked coil cable continuity (good), MAF clean with CRC, checked fuel pump (e-motor good and rubber plug good), cleaned Throttle body cleaned, checked for injector noise (all sounds good)...BUT! still NO ENG CODES and went for a test and still hesitate and black smoke (unburned fuel) thru drivers side pipe (muffler) Do you know what else could be? or Anyone know what else could be? Thank U

[@AR_BSME]

HHJC52 Ever fix it ??

[@jpdollarhyde7870]

Did you ever figure out what was wrong

[@bofa8831]

Hello, I have a malfunction in my Nissan z350, and no one has been able to fix it. The car does not exceed 2RBM. I want to send you a video of the car problem. How much is that possible, please? 

[@adn04]

No sillicon on gasket?

[@lovingswagg]

Can you do a video on the whole car? I’m liking the bronze and silver look dude!!

[@MelMedTV]

Yeah, I'll make a video soon and show everything!

[@z33tanner]

So I'm guessing the plenum gasket was the issue? My 350z has the same type of pop at idle occasionally with a p302 cylinder 2 misfire code replacing the gaskets right now going to see if that fixed itm

[@MelMedTV]

I don't know if it was a plenum gasket or the knock sensor and subharness since I replaced it all at once. replacing it all fixed the code and misfire, though

[@z33tanner]

@@MelMedTV Good! Thank for the reply I switched my #2 and #4 injectors and did my plenum gasket set at the same time and the gasket was my issue! CEL has stayed off and not gone to cylinder 4 so I'm stoked easy fix.

[@AGiraffeOnFire]

Did you just replace the "middle" gasket (6 holes) or both the lower gaskets too (3 holes) to fix your issue?

[@z33tanner]

@@AGiraffeOnFire Neither, not the manifold gasket or lower plenum gasket the upper one. It's the biggest one where the plenum spacer goes.

[@AGiraffeOnFire]

Waffeey Ah damn I’m having the exact same issue as you but I have the aluminum kinetix intake manifold so the upper gasket isn’t an option in my case

[@anthroygrierson4618]

What's the torque specs on the lower plenum?

[@Tootoojackson]

When you get a P0327 code 9 out of 10 it's the knock sensor wiring harness I know I've been through it

[@staydown4bo]

i think my sensor went bad itself lol. Im at 161k on Original everything

[@mikemarin4793]

We’re did you get the coil packs ?

[@MelMedTV]

The junkyard. My local yard usually has a g35 laying around, and the coil packs are cheap there.

[@HHJC52]

Hey Dr/Dr, I have a similar problem (never had it before) after I tried to clean my gasoline system with SEAFOAM. 3 days later car started hesitating (lost power randomly)so I went home and changed spark plugs double plat., checked coil oms (resistance 800-1000 omha), checked coil cable continuity (good), MAF clean with CRC, checked fuel pump (e-motor good and rubber plug good), cleaned Throttle body cleaned, checked for injector noise (all sounds good)...BUT! still NO ENG CODES and went for a test and still hesitate and black smoke (unburned fuel) thru drivers side pipe (muffler) Do you know what else could be? or Anyone know what else could be? Thank U

[@deavid81]

how about if u got the p0306 code

[@itz_ur_boy_kevin6597]

I have the p0300 code and I replaced all plugs and coils and still have the same problem

[@xplosivetime8595]

Itz_ur_boy _kevin I changed my spark plugs and valve covers and valve cover gaskets and I’m still having this issue, have u solved urs yet? If so, what did it?

[@MystiqueMotives]

@@xplosivetime8595 MAYBE camshaft sensors?

[@willk3807]

Fuel injector wiring harness. Comes with knock sensor harness from Z1motorsports....under $125

[@bryangates3142]

Once you change knock sensor you should be good...

[@keithgrant4288]

Great job won't buy a Nissan tho..my goodness you have some patience..I was tired watching..

[@physics2817]

Gas eats styrofoam

[@hueyjr1354]

Pcv valve

[@augustinepasillas4393]

Q 13th 3³a ser