#4 Fuel Injector Leak
Thread Starter
Senior Member
True Car Nut
Joined: Oct 2002
Posts: 2,703
Likes: 0
From: Groton, CT _NEBF 05, 06, 07_

I've been getting this intermittent fuel odor inside the car especially at idle or standing in traffic. I looked at the fuel rail, the injectors, and the general vicinity on top of the engine for anything obvious. It appears that #4 fuel injector is leaking at the base where it makes up to the lower intake. Has any one else run into this problem. Looks like possible O ring failure.
Originally Posted by markwb
Has any one else run into this problem? Looks like possible O ring failure.
Senior Member
True Car Nut
Joined: Sep 2004
Posts: 9,130
Likes: 0
From: Farmington, Minnesota =MWBF '05 SURVIVOR= =CEBF '06 SURVIVOR= =August '06 COTM=

I would definantly look into replacing all the o rings on the injectors if that looks to be the case.
Prolly about a 1 hr job.
Prolly about a 1 hr job.
Check your fuel supply quick disconnect fitting.
If it is leaking like mine was, the fuel collects around the number 4 injector.
NAPA sells a slick replacement fitting for around $8 that is very easy to install.
The o-rings inside the factory fitting have a tendency to dry out and lose the sealing ability.
See my post for 2002 SLE intermittent fuel smell.
If it is leaking like mine was, the fuel collects around the number 4 injector.
NAPA sells a slick replacement fitting for around $8 that is very easy to install.
The o-rings inside the factory fitting have a tendency to dry out and lose the sealing ability.
See my post for 2002 SLE intermittent fuel smell.





