Hello all, I'm very new to the car scene so if this is the wrong place to post this, my apologies. Yesterday I replaced the spark plugs in my G37, they ones that were in were the original plugs, and I put in Denso FXE24HR11 spark plugs. I followed the procedure I found online very closely, and everything went very smoothly, other than being very difficult to access. I tried to start it up, and it sounds like it is starting fine for about 2-3 seconds, then it cuts out and the electronics stay on in the cabin and all kinds of warning lights come on. I'm not really sure what other information to provide, but it's a 2009 G37x. I tried unplugging the battery for a bit then reconnecting it, but that didn't do anything.

Are there any ways to troubleshoot this issue? Any common mistakes that I might have made?

Thanks in advance, once again sorry if I messed up my format or location of this post!

ConfusedInfiniti wrote:Hello all, I'm very new to the car scene so if this is the wrong place to post this, my apologies. Yesterday I replaced the spark plugs in my G37, they ones that were in were the original plugs, and I put in Denso FXE24HR11 spark plugs. I followed the procedure I found online very closely, and everything went very smoothly, other than being very difficult to access. I tried to start it up, and it sounds like it is starting fine for about 2-3 seconds, then it cuts out and the electronics stay on in the cabin and all kinds of warning lights come on. I'm not really sure what other information to provide, but it's a 2009 G37x. I tried unplugging the battery for a bit then reconnecting it, but that didn't do anything.

Are there any ways to troubleshoot this issue? Any common mistakes that I might have made?

Thanks in advance, once again sorry if I messed up my format or location of this post!

Are those plugs specified in the owners manual and FSM?

When it was time to replace plugs in my previous 06 G35 at almost 107k miles they were NGK
and installed by the dealer.



Why did you replace your plugs?
Were you over 100k miles?

Telcoman

They were the plugs that Auto Zone recommended for the car. Car is at 103K, so I decided it was time to replace them. I opted not to go to the dealer in hopes to save some money, but it's turning out to be quite the hassle.

That was exactly why I let the dealer replace mine. Forget what auto zone said. What plugs does the FSM or the owners manual specify?

The plugs we're using are the same as the original plugs that were in the vehicle. I'm thinking it might be something to do with the seals on the intake system. Do you know if this is common? Is there any way to check what seal/seals might not be air-tight?

Recheck your work

http://www.nicoclub.com/FSM/G37/Sedan/2009/EM.pdf

Telcoman