Hey G experts,

For the past two years I’ve been hearing a clunk when driving wheel straight in low speeds at idle. 1 Infiniti dealer and 2 Nissan dealers could not diagnose the problem and it’s driving me nuts. 2013 g37xs sedan 7a has 145xxx kms on it and has so much life left but on the daily the sound just makes me go bonkers.

I’ve checked the following:

-lower and upper control arm seem to be tight no play in the wheels
-suspension seems fine
-tie rod seems fine
-cv axel visually looks good no clicking on full crank either way
-crow bar between the subframe and sway bar results in zero movement
- engine mount appears fine
- rear diff mount has a tiny bulge in it but not cracked

I feel like I can feel it in the floor board and maybe the shifter. Hard to tell as I’m always in the middle of something when I hear it then find it impossible to replicate….. except for today….. when you hold the brakes and give it gas enough for a “brake launch” as the revs start to build up to about 2-2.5k you will hear and feel the clunk once near the front or center of the car. Then rinse and repeat and you can hear it again.

Is this the engine mount? Rear differential? Transmission mount? I either figure it out or drive it until she breaks.

If you live in Calgary hit me up maybe hearing the noise it makes would help? I’ve tried to search for similar problems but can’t find any post with the same issue.

Tia