NEED HELP (spark plugs)

BNomar_7 · 06-01-2019, 10:54 AM

I was changing my spark plug on my Z... well i try cause my regular spark plug socket didn’t fit. Anyone know what size should i use?

sizziano · 06-01-2019, 10:57 AM

I believe you need a 14mm "thin walled" socket.

BettyZ · 06-01-2019, 11:03 AM

Yeah it needs to be a super thin walled 14. Like tissue paper thin. Amazon!

hotprops · 06-01-2019, 12:15 PM

just bought one on ebay $2.99 from china 12 pt 14mm slim for bmw 3/8 drive .from china.39 cent ship. thought i should have one in the tool box! if it is a tad wide i will turn it down till it just fits. thanks for the heads up.

nis350 · 06-02-2019, 02:27 AM

do you have to remove the throttle body to get to the plugs?

Quote:

Originally Posted by BNomar_7

I was changing my spark plug on my Z... well i try cause my regular spark plug socket didn’t fit. Anyone know what size should i use?

jchammond · 06-02-2019, 03:19 AM

Quote:

Originally Posted by nis350

do you have to remove the throttle body to get to the plugs?

14mm or 9/16” 6pt chrome socket will work fine,,,my first time I picked up an Autozone 9/16” one for about $5.00 & then ordered the long 14mm from Snap-On

Easiest way is to drain down your coolant about a gallon or so & remove the upper plenum

You’ll have to remove the electrical connectors from TB’s,some vacuum lines & coolant lines that pass through the throttle bodies.
Couple sensors on back of plenum & you’re ready to lift off

Take care of silicon gasket; it’s reusable & clean TB’s & upper plenum good before re-installation....probably will have oil residue built up in intake.
TB’s can be left connected to plenum...just use good Air Intake cleaner instead of carburetor cleaner.
May want to have a roll of painters tape to put across intake ports after removal- to prevent dropping anything down cylinders

That’s the easiest way I found changing them & good for inspection purposes also

Trips · 06-02-2019, 01:55 PM

Quote:

Originally Posted by jchammond

14mm or 9/16” 6pt chrome socket will work fine,,,my first time I picked up an Autozone 9/16” one for about $5.00 & then ordered the long 14mm from Snap-On

Easiest way is to drain down your coolant about a gallon or so & remove the upper plenum

You’ll have to remove the electrical connectors from TB’s,some vacuum lines & coolant lines that pass through the throttle bodies.
Couple sensors on back of plenum & you’re ready to lift off

Take care of silicon gasket; it’s reusable & clean TB’s & upper plenum good before re-installation....probably will have oil residue built up in intake.
TB’s can be left connected to plenum...just use good Air Intake cleaner instead of carburetor cleaner.
May want to have a roll of painters tape to put across intake ports after removal- to prevent dropping anything down cylinders

That’s the easiest way I found changing them & good for inspection purposes also

It's not that complicated

Spark Plug removal instructions

06-01-2019, 10:54 AM	#1 (permalink)
BNomar_7 Base Member Join Date: Dec 2018 Location: Fort Worth, Texas Posts: 2 Drives: 13 Nissan 370Z Coupe Rep Power: 7	NEED HELP (spark plugs) I was changing my spark plug on my Z... well i try cause my regular spark plug socket didn’t fit. Anyone know what size should i use?

06-01-2019, 10:57 AM	#2 (permalink)
sizziano Base Member Join Date: Sep 2014 Location: CAE, SC Posts: 68 Drives: '18 Sport TECH Rep Power: 11	I believe you need a 14mm "thin walled" socket. Spartan 1771 likes this.

06-01-2019, 11:03 AM	#3 (permalink)
BettyZ A True Z Fanatic Join Date: Aug 2018 Location: Chicagoland Age: 38 Posts: 5,261 Drives: A Garage Queen Rep Power: 2684371	Yeah it needs to be a super thin walled 14. Like tissue paper thin. Amazon! __________________ '14 MB Nismo \| Boost Lab 6870 1.32 AR 553 HP / 471 ft.-lbs. Betty Mods

06-01-2019, 12:15 PM	#4 (permalink)
hotprops Base Member Join Date: Dec 2017 Location: florida Posts: 60 Drives: nissan 370z Rep Power: 3363	just bought one on ebay $2.99 from china 12 pt 14mm slim for bmw 3/8 drive .from china.39 cent ship. thought i should have one in the tool box! if it is a tad wide i will turn it down till it just fits. thanks for the heads up. Last edited by hotprops; 06-01-2019 at 01:10 PM.

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