What is a proper way to replace injector on the rear bank of cylinders. Parts guy at Nissan dealer said a proper way is to take off whole fuel rail. Is it really necessary?

Thanks!

 

He's right. The upper intake manifold and the rear fuel rail have to come off to get the injectors out.

 

You don't have to take off the fuel rail to get them out, but the upper intake manifold you do. Maybe taking off the fuel rail makes it easier, that I don't know, but I've pulled the rear injectors and I've never pulled the fuel rail off the car.

 

Oops.

Side feed injectors > me

 

This is how I did it last time. Now I am curious whether this might cause the leak. I used new upper o-ring and old lower o-ring and hammered gently new injector in.

 

Did you coat the injector in motor oil when you installed it? If not, the seals may not seat properly and will leak.

 

No, I did not. I'll definitely do it today if I get that last damned bolt behind the manifold.

 

I was going to replace O-rings only, but now I think, why don't I go ahead and replace leaking valve cover gasket. In that case I need to remeve IM totally, not just sliding it slightly to the side.

How can I stop coolant leakage from the lines that go to TB. Any tips from MEVI guys..?

 

I'd like to understand exactly what you mean by "did it"... I see a screw driver with an arrow pointing towards the handle of the screwdriver, and a vice wrench.

Did you replace the fuel injector in #5 cylinder (the one closest to driver's side and closest to the windshield)? What cause led you to want to replace the fuel injector? Did you remove the intake manifold before taking out the fuel injector from cyl #5? Is it possible to get the fuel injector from cyl #5 out and replace injector without removing the intake manifold?

(my car is misfiring in cyl #5. I swapped coil #5 with coil #3 and misfire still in #5. Placed fuel cleaning additive into gas tank, hoping this might improve misfire assuming fuel injector is problem. How many miles should I drive to give sufficient use and determine if fuel injector must be replaced?)

 

What the hell kinda medieval contraption is that? :-D

Do it right this time. DO NOT HAMMER AN INJECTOR

An injector is a little pump regulator with many little teeny tiny parts. You dont hammer it. Thats like changing a battery on a rolex with a jackhammer.

For the love of god

 

I used vise grips to twist and pull out the injector. (and to break free the screws) To install, I just put the cover on and tightened the screws a little on each side at a time.

 

That's a grat tip, with cap and screws. Can't believe I did not realize that. Thanks for input guys. Car is running again. There seam to be no leak anymore. I will update my write-up!!

 

Hi all. This is my 1st post on this website.

Wanted to share my experience with pushing in the new injector into the fuel rail. I had removed the fuel rail per Haynes instructions. Followed the instructions to the T and pushed the new injector in (motor oil on the o-rings). Ran great for a few days, but then realized the o-ring was tweaked when it stopped running and fuel was pouring into the cylinder. My mechanic told me you have to gently "twist" it in, not just push it in straight. Which makes sense, but I was just following Haynes as close as I could. That's a bad on Haynes!

Anyway, the idea of gradually nudging it in by tighting the screws seems like a great idea. I changed an injector out last night this way. I realized it restricts you from doing the twisting. So I gently twisted it in as far as I could manually, then finished it using the screws. So far its running great. Hope the o-ring stays good. Fingers crossed!!! I think I'll carry a spare set of o-rings just in case.