Multiple Cylinder Misfire P0300

Quicksilvers · 03-01-2019, 09:43 PM

Quote:

Originally Posted by Genosphere

Update

So swapped in some coils i got and now i got the "P0021." From what I have looked up so far, it dosen't look to good at this point. Somewhere someone said it could possibly be a clogged oil filter "100+ confirmations", so they say, and have see a pretty consistent confirmation on the front end timing cover's seal being blown and leaking into the cover, which make it pretty hard to tell until you pull it... Could also be one of the sensors in the timing cover or an entirely different issue.

May try to swap over my original coils and see if that changes things. First ill try swapping out the O2 sensors i guess, since there pretty easy to get to compared to everything else.

Live in Pittsburgh if anyone wants to lend a hand with the possible front end fuckery, please give me a ring.

I would try doing an oil change and brand new oil filter,replacing all six ignition coils with Genuine Nissan OEM coils,and if you replace all your 02 sensors replace them with Genuine Nissan OEM 02 sensors they are the best for our Z’s from what I have seen and will last the longest. I have seen oil filters get clogged before because of not changing your oil on time. Report back with what happens.

Genosphere · 03-01-2019, 10:55 PM

Will do friend. I'm hoping its the clogged oil filter; sitting for ruffly a week in below freezing temps with science

happening down there could just be it. Tried to run the car at least once a week in the garage, but due to almost completely severing my tendon near the third metacarpophalangeal joint, I was a bit laid up.

Thanks and fingers crossed.

Update in the pm EST.

Genosphere · 03-03-2019, 05:31 PM

Quote:

Originally Posted by Quicksilvers

I would try doing an oil change and brand new oil filter,replacing all six ignition coils with Genuine Nissan OEM coils,and if you replace all your 02 sensors replace them with Genuine Nissan OEM 02 sensors they are the best for our Z’s from what I have seen and will last the longest. I have seen oil filters get clogged before because of not changing your oil on time. Report back with what happens.

So:
• I dropped the oil and filter which appears to be ok; never the less it will be changed. Oil seemed a little dirty compared to how little mileage it's seen, though could just be my imagination.

•I tested the O2 sensors per a few forums and videos I watched by testing continuity across the black leads on sensor side. I'll tell you what, those sons of bitches were shitty just to disconnect, getting to the actually sensor is going to be a pain.

•Removed bumper to prep for the whole timing cover catastrophe. That's going to be a nice project...

I'll be throwing some oil and a filter on it maaaybe tomorrow to test the whole clogg filter idea and possible swap back over my original coils; might try an swap each coil out individually with one of the extra six I got if I'm feeling super patient.

All in all, I suppose progress has been made however so little that may be.

Sent from my SM-G920V using Tapatalk

jchammond · 03-03-2019, 07:27 PM

Quote:

Originally Posted by Genosphere

So:
• I dropped the oil and filter which appears to be ok; never the less it will be changed. Oil seemed a little dirty compared to how little mileage it's seen, though could just be my imagination.

•I tested the O2 sensors per a few forums and videos I watched by testing continuity across the black leads on sensor side. I'll tell you what, those sons of bitches were shitty just to disconnect, getting to the actually sensor is going to be a pain.

•Removed bumper to prep for the whole timing cover catastrophe. That's going to be a nice project...

I'll be throwing some oil and a filter on it maaaybe tomorrow to test the whole clogg filter idea and possible swap back over my original coils; might try an swap each coil out individually with one of the extra six I got if I'm feeling super patient.

All in all, I suppose progress has been made however so little that may be.

Sent from my SM-G920V using Tapatalk

Better do some more research on that 21 code; as it didn’t sound familiar to me-so I asked google

jchammond · 03-03-2019, 07:29 PM

Quote:

Originally Posted by jchammond

Better do some more research on that 21 code; as it didn’t sound familiar to me-so I asked google

It said this

Genosphere · 03-04-2019, 10:25 AM

Quote:

Originally Posted by jchammond

It said this

The code from my OBD, yes. An no I actually read through multiple forums, videos, discuss with people etc. to try to narrow things down. As for dropping the oil/filter, I'll probably need to do it anyway if I have to get into the timing cover and it turns out to be leaking from what ever seal; I also would be doing a post winter oil change soon if this didnt happen so the filter was coming off one way or the other.

Side note, I am going to take a look into the IVT solenoid/sensor before i rip apart more. Seem like a possible culprit and it may keep me from having to tear down the front end for now. Doing a little more digging before i start wrenching today or tomorrow.

I appreciate the input on the oil filter, but please do not assume i just type "x" things into a search engine and read the heading thinking, "thats it!" I prefer to do research and cross reference especially on potentially serious matters.

Just a few sources for some generic info:
ENGINE Rebuild, P0011, P0021 Help!

https://maxima.org/forums/5th-genera...y-input-2.html

https://www.youtube.com/watch?v=bK8rjYCJQNI

Back with more info soon.

Spooler · 03-03-2019, 06:21 PM

Quote:

Originally Posted by Quicksilvers

I would try doing an oil change and brand new oil filter,replacing all six ignition coils with Genuine Nissan OEM coils,and if you replace all your 02 sensors replace them with Genuine Nissan OEM 02 sensors they are the best for our Z’s from what I have seen and will last the longest. I have seen oil filters get clogged before because of not changing your oil on time. Report back with what happens.

Oil filters don't get clogged so to speak. If the filter becomes full it will bypass the oil around the filter and do no filtering. Whoever told you that is full of crap.

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03-01-2019, 10:55 PM	#2 (permalink)
Genosphere Base Member Join Date: Jul 2017 Location: Pittsburgh Posts: 32 Drives: 09 Z34 Black M Rep Power: 7	Will do friend. I'm hoping its the clogged oil filter; sitting for ruffly a week in below freezing temps with science happening down there could just be it. Tried to run the car at least once a week in the garage, but due to almost completely severing my tendon near the third metacarpophalangeal joint, I was a bit laid up. Thanks and fingers crossed. Update in the pm EST.