Topic Sponsor
1997 - 2003 Ford F150 General discussion on the Ford 1997 - 2003 F150 truck.

Leaking fuel injector o ring

 
Old 08-23-2013, 09:20 PM
  #1  
Horse Man
Thread Starter
 
loganhorse's Avatar
 
Join Date: Sep 2011
Location: Western KY
Posts: 756
Received 5 Likes on 5 Posts
Default Leaking fuel injector o ring

How hard is the fuel rail to remove on the 4.6? I think I have a bad o ring on the 4th cylinder. I could hear a hissing sound but went away when I moved the fuel injector and it had cylinder 4 misfire on.
loganhorse is offline  
Old 08-24-2013, 12:06 AM
  #2  
Senior Member
 
akdoggie's Avatar
 
Join Date: Jul 2010
Location: Anchorage, Alaska
Posts: 6,210
Received 643 Likes on 604 Posts
Default

97 and 98 4.6's are fairly straight forward and remove relatively easy. Make sure to release the pressure before you life the rail, or you could get a real wet surprise. The fuel pressure can be released by removing the Shrader Valve on the rail. It is the cap like on a tire stem. Press down on it like you would with a tire, but put a rag over it to keep the gasoline out of your eyes. Once done, it is easy to do what you have planned. Good luck.
akdoggie is offline  
Old 08-24-2013, 12:13 AM
  #3  
Horse Man
Thread Starter
 
loganhorse's Avatar
 
Join Date: Sep 2011
Location: Western KY
Posts: 756
Received 5 Likes on 5 Posts
Default

Originally Posted by akdoggie View Post
97 and 98 4.6's are fairly straight forward and remove relatively easy. Make sure to release the pressure before you life the rail, or you could get a real wet surprise. The fuel pressure can be released by removing the Shrader Valve on the rail. It is the cap like on a tire stem. Press down on it like you would with a tire, but put a rag over it to keep the gasoline out of your eyes. Once done, it is easy to do what you have planned. Good luck.
Is there anything that needs to come off major to remove it? Also where does the rail hook to the fuel line? Haven't had a chance with work to look at it.
loganhorse is offline  
Old 09-15-2013, 10:02 AM
  #4  
Horse Man
Thread Starter
 
loganhorse's Avatar
 
Join Date: Sep 2011
Location: Western KY
Posts: 756
Received 5 Likes on 5 Posts
Default

Anybody know if I can't raise the passenger side rail enough to replace the o rings without removing the whole rail?
loganhorse is offline  
Old 09-15-2013, 12:11 PM
  #5  
Senior Member
 
Z7What's Avatar
 
Join Date: Apr 2013
Location: New Orleans, LA
Posts: 5,910
Received 720 Likes on 607 Posts
Default

The fuel rail has a flex line along the back of the motor so you only need to unbolt the passenger side to replace #4, no need to unbolt the entire thing. Make sure you remove the pressure from it like it was said above. Remove black cap off shradder valve and wrap with towel and press valve down like letting air out of a tire til all pressure is released.

Wayne
Z7What is offline  
Old 09-15-2013, 01:17 PM
  #6  
Senior Member
 
jollyroger331's Avatar
 
Join Date: Apr 2012
Location: Garden City MI
Posts: 2,137
Received 160 Likes on 148 Posts
Default

Put a little oil on the o-rings when you replace them so they seat better and don't start out dry. I learned the hard way.
jollyroger331 is offline  
Old 09-15-2013, 01:37 PM
  #7  
Horse Man
Thread Starter
 
loganhorse's Avatar
 
Join Date: Sep 2011
Location: Western KY
Posts: 756
Received 5 Likes on 5 Posts
Default

Anyway I can verify its a o ring? I have checked the plug and the plug is fine.
loganhorse is offline  
Old 09-15-2013, 01:40 PM
  #8  
Horse Man
Thread Starter
 
loganhorse's Avatar
 
Join Date: Sep 2011
Location: Western KY
Posts: 756
Received 5 Likes on 5 Posts
Default

I heard a leaking sound and moved the injector and it stopped which is why I was thinking the I ring. Also getting a cylinder 4 misfire.
loganhorse is offline  
Old 09-15-2013, 01:46 PM
  #9  
Senior Member
 
Join Date: Sep 2013
Location: Belle Plaine, MN
Posts: 164
Likes: 0
Received 6 Likes on 6 Posts
Default

Another way to relieve the pressure (safest way) pull the fuel pump relay out of the fuse block and start the truck and let it run out of fuel. That way worst case you get a drip or two.
BellePlaineScrew is offline  
Old 09-15-2013, 01:46 PM
  #10  
Senior Member
 
jollyroger331's Avatar
 
Join Date: Apr 2012
Location: Garden City MI
Posts: 2,137
Received 160 Likes on 148 Posts
Default

I'm not sure, I knew mine was leaking because I could see and smell the gas coming out. It wasn't on my f150 it was on a Buick park ave I had.
jollyroger331 is offline  
 


Thread Tools
Search this Thread
Quick Reply: Leaking fuel injector o ring


Contact Us - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
 
  • Ask a Question
    Get answers from community experts
Question Title:
Description:
Your question will be posted in: