Leaking Injector
Thread Starter
Burning Brakes
Joined: Nov 2006
Posts: 763
Likes: 2
From: Weston FL
Leaking Injector
Looks like I've got a leaking injector. I've got limited mechanical experience.
What's involved in replacing an injector? Is it hard or easy? Mostly is it safe to do in a home garage?
Thanks in advanced for the help.
92
LT1 - stock
110K miles
What's involved in replacing an injector? Is it hard or easy? Mostly is it safe to do in a home garage?
Thanks in advanced for the help.
92
LT1 - stock
110K miles
Melting Slicks
Joined: Feb 2005
Posts: 2,135
Likes: 0
From: Sebastian Florida
St. Jude Donor '06
Do you know which one is leaking?
It is easy, take off the 4 bolts that hold down the fuel rails. Then, carefully pull the the FI's out, there is a clip right under the fuel rail that holds the FI on. Almost forgot, use a spray cleaner 1st around the FI's to get rid of any debris.
It is easy, take off the 4 bolts that hold down the fuel rails. Then, carefully pull the the FI's out, there is a clip right under the fuel rail that holds the FI on. Almost forgot, use a spray cleaner 1st around the FI's to get rid of any debris.
Thread Starter
Burning Brakes
Joined: Nov 2006
Posts: 763
Likes: 2
From: Weston FL
Do you know which one is leaking?
It is easy, take off the 4 bolts that hold down the fuel rails. Then, carefully pull the the FI's out, there is a clip right under the fuel rail that holds the FI on. Almost forgot, use a spray cleaner 1st around the FI's to get rid of any debris.
It is easy, take off the 4 bolts that hold down the fuel rails. Then, carefully pull the the FI's out, there is a clip right under the fuel rail that holds the FI on. Almost forgot, use a spray cleaner 1st around the FI's to get rid of any debris.
Do I need to shut the fuel pump off before doing this work?
Also, ho wdo I know which type to replace it with? These are purple tops, I assume they're color coded.
Thanks for the info, the CF never fails.
Le Mans Master
Joined: Dec 2004
Posts: 5,789
Likes: 8
From: Myrtle Beach SC
St. Jude Donor '05-'06
Leaking from the fuel rail? Pull the FP fuse and turn the car over to relieve pressure but if you let it sit over night (especially with a leak) you should be OK. You may need to use a big screw driver to pry the front and back of the rail up a little on each side but they will come out. Sounds like you need a new "O" ring probably change the all. Inspect them for cracks. The clip that holds them in the rail just slides off of it. Don't loose them( they can slide off the rail). Once you get the rail out just flip it over on the passenger side. No smoking 
and plenty of ventilation ( and mabey an extinguisher just in case)
Instead of replacing them you can send them off to get cleaned. Doesn't sound like you have stock injectors.
Team Owner
Joined: Dec 2000
Posts: 90,675
Likes: 304
From: SE NY
Cruise-In II Veteran
What's involved in replacing an injector? Is it hard or easy? Mostly is it safe to do in a home garage?
It's not "hard" but can be tedious depending on how much "stuff" need be removed to access the rail and injectors.
I suggest you run the fuel level down to 1/4 tank, park on a flat surface, with fuse pulled run the engine till it's our of fuel, put some paper towels under the fuel lines and disconnect from the rail. If you do it inside the garage I'd have the door open while there is any fuel odor.
Le Mans Master
Joined: Dec 2004
Posts: 5,789
Likes: 8
From: Myrtle Beach SC
St. Jude Donor '05-'06
You do not need to remove the lines from the rail. I have done this 3 times on a LT1 already. Pop the rails up and the whole assemby will flip over onto the surge tank and you will have access to all the injectors looking you right in the face. There is nothing blocking the rails besides the plastic covers which I assume you already have off if you can see the leak. You do have to push in the harness clip to pull the plug off do that first simply push the center of the "bow" and pull upto unlock the clip. Nor is it necessary to run your fuel down doing what I have told you will ensure the rail is well above the fuel tank.
Last edited by Redeasysport; Apr 24, 2008 at 12:03 AM.
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Le Mans Master
Joined: Jul 2004
Posts: 6,220
Likes: 696
From: Clifton Park, NY ............Clearwater, FL ... 85 Original Owner
I have done this and I wouldn't really consider it all that easy. Mine was an 85 so that might make a difference. There is a lot to take off before you can even get to the injectors. If you have limited mechanical experience, you probably don't own many of the tools that you'll need either. Unless you are up to a real challenge, I'd leave it to someone else with experience. I wouldn't change just 1. Change them all while you have it apart.
