DIY: Spark Plug Tube Seal Replacement - - Infiniti G35 & G37 Forum Discussion |
Show Your Support Become A Premier Member

    > >
  • Reload this Page >
    • DIY: Spark Plug Tube Seal Replacement

DIY: Spark Plug Tube Seal Replacement

Thread Tools Rate Thread
Old 11-22-2013, 02:03 PM
Registered User
Thread Starter
Join Date: Jul 2013
location: West Palm Beach, FL
Posts: 8
Thanks: 0
Thanked 3 Times in 2 Posts
DIY: Spark Plug Tube Seal Replacement

DIY: Spark Plug Tube Seal Replacement

1. Disconnect battery Ground (-).
2. Remove the engine cover.
3. Disconnect the MAF sensor and vacuum hose connected to the intake tube.
4. Remove the air intake from the throttle body to the air filter.

5. Remove the upper plenum in reverse order from 18 to 1.
6. Remove the vacuum hose near bolt #13.

7. Lift up and tilt back the upper plenum and hold it up with bungee cords, twine, etc.
8. Remove the vacuum hose from the front of the lower plenum and rear of the upper plenum near the throttle body.

9. Remove the lower plenum in reverse order from 8 to 1.

10. After removing the lower plenum immediately plug the intake holes with paper towels and cover with shop rags to keep debris out of the cylinders.
11. Remove the wire harness bolts to give yourself space to remove the valve covers.
12. Label and remove the coil packs. They must go back exactly where they came from.
13. Remove the vacuum hose in the top front that connects both valve covers together.
14. Start with either the driver side or passenger side valve cover by removing perimeter bolts.
15. After removing all 10 bolts lift up on the valve cover to clear the cam shafts, push back and work out carefully.

16. Once all covers removed, carefully remove gasket material from heads and intake manifold.

17. There's 3 seals per valve cover as seen above, secured by the baffle plate. WARNING!!! DO NOT REMOVE THE BAFFLE PLATES.

18. Secure the valve cover to your drill press and and cover area arounfd the hole your drilling with shop rags to prevent debris from getting behind the baffle plate.
19. Using a 1 7/8in hole saw, drill out a few millimeters deep through the baffle plate.
20. Once the seal is exposed, you may have to drill just slightly larger than 1 7/8in, pop out the seals by flipping the cover over and tapping out.

21. After seals have been removed thoroughly clean the area where the new seals will go, rtv will not stick to oil/debris.
22. Run a small bead of black rtv around the outer groove of the rings and pop in the new seals.

23. After new seals have been inserted run another bead of black rtv around the top of the seal and allow plenty of time to cure.
24. Once cured; Re-assemble valve covers with new gaskets, lower plenum with a new gasket, and upper plenum with a new gasket, air intake and battery Ground (-).

***Be sure all vacuum/coolant lines are reconnected.
***Be very careful when re-attaching the upper plenum not to pinch the oil cap rubber between the upper and lower plenums.
***If you encounter a Check Engine Light, disconnect battery Ground (-) an check all sensors/hoses are properly connected. To reset the CEL, while Ground is disconnected tap the brakes a few times, reconnect Ground and retry.

Send a pm if you need some spark plug tube seals.

Good Luck,
The Following 2 Users Say Thank You to G35TSS For This Useful Post:
Gilley (11-25-2013), Ouija (03-26-2014)
Old 11-22-2013, 09:15 PM
redonblack35's Avatar
Registered User
iTrader: (3)
Join Date: Oct 2012
location: Phoenix
Posts: 665
Thanked 47 Times in 36 Posts
Here's a cool alternative for the Do It Yourselfers! Thanks!
Old 11-23-2013, 12:03 AM
Registered User
iTrader: (5)
Join Date: Apr 2009
Posts: 8,306
Thanked 469 Times in 416 Posts
op u went with the r&d/l-fab seals?
Old 11-25-2013, 08:06 PM
Registered User
iTrader: (7)
Join Date: Apr 2004
location: Orlando, FL
Posts: 8,001
Thanked 6 Times in 5 Posts
Thanks for the pics. Which seals did you use?
Old 02-20-2014, 10:54 PM
Registered User
Join Date: Feb 2014
Posts: 1
Thanks: 0
Thanked 0 Times in 0 Posts
Where did you get the seals? Thanks.
Old 02-21-2014, 11:01 AM
Registered User
Thread Starter
Join Date: Jul 2013
location: West Palm Beach, FL
Posts: 8
Thanks: 0
Thanked 3 Times in 2 Posts
Hi Turbo, I have the seals, plenty of them. Send me a pm and I can help you out.

Have Friday,
Old 02-21-2014, 02:11 PM
Registered User
iTrader: (5)
Join Date: Apr 2009
Posts: 8,306
Thanked 469 Times in 416 Posts
wat do u mean u have the seals?
Old 02-21-2014, 03:43 PM
Registered User
Thread Starter
Join Date: Jul 2013
location: West Palm Beach, FL
Posts: 8
Thanks: 0
Thanked 3 Times in 2 Posts
Please send me a private message for further inquiries.

Thank you,
The Following User Says Thank You to G35TSS For This Useful Post:
alecz86 (04-04-2014)
Old 05-14-2014, 11:48 PM
Registered User
Join Date: May 2014
Posts: 9
Thanks: 0
Thanked 0 Times in 0 Posts
Spark plug tubes

I am curious does anyone know how to remove the spark plug tubes themselves? i have some carbon built up from a misfire in #3 that i am having trouble removing. I was told to use an impact socket inside of the tube and a vicegrip on the outside to grip the tube and work it off but with how firm it seems im afraid it will damage the tube. Im trying to solve the oil leaking into my spark plug tubes problem that i've heard quite a bit about as well got new gasket for the valve covers but my VC's are still in perfect condition aside from the tube seals that im assuming are the culprits of my leak. I noticed a ring-shaped gap in the middle of the tube seals and im curious couldn't you just clean them up and run a thick bead of RTV in that groove to seal the tubes up without the drilling and new rubber rings? I apologize if thats a dumb question im just having trouble understanding how those seals would allow oil over and into the plug tubes. I really dont want to drop hundreds of dollars on new vc's over a rediculous design flaw and what should be a 10$ seal.
Old 08-15-2014, 06:29 AM
Srdatsun's Avatar
Registered User
Join Date: Sep 2012
location: Cali.
Posts: 29
Thanks: 0
Thanked 0 Times in 0 Posts
My driver side valve cover seals are leaking as well.
Didn't know this could be done.
Send a price on the seals if you still have any.

Related Topics
Thread Thread Starter Forum Replies Last Post
New to the G family, I Need help Terry_G35 New Members Check In 14 08-20-2015 10:56 PM
FS: 05 G35X sedan $6700 wuppiedog G35 Cars 1 08-07-2015 12:16 PM
06 6mt coupe misfiring 😓 ghost_g35 Engine, Drivetrain & Forced-Induction 2 08-07-2015 11:31 AM
2003 G coupe. Need help guys please Terry_G35 G35 Coupe V35 2003 - 07 8 08-04-2015 03:38 PM
Jerking first and second gear 6mt G35OUTLAW6MT G35 Sedan V35 2003-06 0 07-13-2015 03:26 PM

2003, changing, cylinder, diy, engine, fx35, g35,, infiniti, misfire, plu, plug, plugs, seal, seals, spark, tube
Thread Tools
Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

All times are GMT -4. The time now is 05:40 PM.

Copyright ©2002 - 2017, All Rights Reserved. We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to and affiliated sites.

Related pages

lowering springs miatalexani tires lx-seveninfiniti g35 coupe maintenance costsg37 brake fluidhow to remove rust from brake rotorshow much is a power steering rack replacementwhat kind of battery for nissan key fobblue smoke coming out of exhaust when starting car2008 g37s reviewinfiniti apparelmuffler delete legalvossen vvs cv3 concave wheelsg35 ecujarama wheelsgeneral tire g-max as-03 reviewviper smart start installationcobb access port rx8zapco dc 500.1rims for infiniti g35 coupeotc tire pressure reset toolg35 double dincylinder misfire repair costlegal tint californiagreddy evo3front windshield tintingreplacement xenon bulbsg35x specscar losing oilengine oil analysis kitfutura brakesgex-p10xmtadam motorsportsg37 rear spoilerxxr 518throw out bearing noisespark plug grommetsgreddy ti-c exhaust15 inch orion hccai monster cassette adaptermaaco paint jobs pricesadjusting castertensioner pulley assemblymurano service engine soonmaxima engine swape36 stance coiloversmagnaflow bullet mufflersearly lease buyoutbrembo brake packageball joint tool autozonecambering a carundercarriage damagesewell infiniti dallas txwindshield wiper motor replacement cost5x112 bolt patternkicker 15 inch subwoofers06 wrx trhow to get rid of car door dingsaccuair vu4maaco paint job costengine rb26types of blow off valve soundsinfiniti g35 parts and accessoriesvossen cvt priceinjen sp cold air intaketcu locatedkicker l5 8 inchpo455 nissanlexus is300 0-60nitto neogen tireshow to restore cracked leather seatstein basis reviewhow much does it cost to replace clutch