Help - G37 Wire Harness Flex - I Need More!
Dying here. This project is becoming a bit of nightmare. And need some assistance.
I have a head gasket leak on the driver. I thought "Might as well do both." So far no dice. I can't even remove the head gasket cover from the driver side. I just don't have enough give. I watched a number of videos. They're excellent; both are below:
Both video show SO much give in the harness. I released the same clips and removed the same parts as they did; no dice.. The rear passenger side of mine feels right against the cover.
Here is a video of my car engine bay showing my issue:
Any help is greatly appreciated. Also, I am noticing EVERYONE changes the covers while they do the gasket. Is that necessary? Asking for a friend here. lol.
Best,
NoviceAtBest,
I have a head gasket leak on the driver. I thought "Might as well do both." So far no dice. I can't even remove the head gasket cover from the driver side. I just don't have enough give. I watched a number of videos. They're excellent; both are below:
Both video show SO much give in the harness. I released the same clips and removed the same parts as they did; no dice.. The rear passenger side of mine feels right against the cover.
Here is a video of my car engine bay showing my issue:
Any help is greatly appreciated. Also, I am noticing EVERYONE changes the covers while they do the gasket. Is that necessary? Asking for a friend here. lol.
Best,
NoviceAtBest,
Last edited by NoviceAtBest; Oct 17, 2025 at 01:26 PM.
Just did mines & yes it was a lil tight
- 1st if have not already disconnect your Negative battery but be sure to open your trunk in case
- maybe you would need to disconnect some clip + plug on the right side near firewall to give it more slack
- the sensor (orange plug on right side attached to valve cover, i used a plier & hold one end of plug & hand to press the one end clip & pull away.. it should disconnect.. then once you have enough room go underneath valve cover to unclip the orange + i think you would need to unclip one on the ledt side too
- take the oil cap off & go to right & slide the cover up toward the left side up and out
- yeah it will be tricky putting back but do it in reverse & double check the gasket when you are ready to screw the screw in ,, triple check the gasket including the spark plug gasket
Passenger side tip:
- a lil easier but remove the fuel damper for easy access + better easy cleaning
Hope this helps. GL
- 1st if have not already disconnect your Negative battery but be sure to open your trunk in case
- maybe you would need to disconnect some clip + plug on the right side near firewall to give it more slack
- the sensor (orange plug on right side attached to valve cover, i used a plier & hold one end of plug & hand to press the one end clip & pull away.. it should disconnect.. then once you have enough room go underneath valve cover to unclip the orange + i think you would need to unclip one on the ledt side too
- take the oil cap off & go to right & slide the cover up toward the left side up and out
- yeah it will be tricky putting back but do it in reverse & double check the gasket when you are ready to screw the screw in ,, triple check the gasket including the spark plug gasket
Passenger side tip:
- a lil easier but remove the fuel damper for easy access + better easy cleaning
Hope this helps. GL

GREAT VIDEOS! I watched them. I can't thank you enough, but I am STILL...running into an issue on the rear diver side by the firewall.
Here's a 76 second video showing what I am running into. I am concerned too that some of the wire harness tape is so brittle; it's straight falling of in some areas I simply had to remove it.
Here's a 76 second video showing what I am running into. I am concerned too that some of the wire harness tape is so brittle; it's straight falling of in some areas I simply had to remove it.
Now I another issue. Ugh...
It is CRYSTAL clear that someone put gasket dressing sealant around the ENTIRE valve cover on the passenger side. It won't budge a dang millimeter. I already broke of two harness clips trying to use a rubber mallet. I need a solution. I tried running a razor gently alongside the one side to break it. It got through, but it STILL won't budge.
Any solutions? Spray? Heat? Talk to me.
It is CRYSTAL clear that someone put gasket dressing sealant around the ENTIRE valve cover on the passenger side. It won't budge a dang millimeter. I already broke of two harness clips trying to use a rubber mallet. I need a solution. I tried running a razor gently alongside the one side to break it. It got through, but it STILL won't budge.
Any solutions? Spray? Heat? Talk to me.
Thread
Thread Starter
Forum
Replies
Last Post
TrueIM
D.I.Y. Installations/Modifications
0
Aug 26, 2024 09:58 PM
pahanorlando
D.I.Y. Installations/Modifications
0
Dec 12, 2022 01:56 PM
patrickdowdle08
D.I.Y. Installations/Modifications
29
Jan 9, 2018 07:55 PM







