Notices
C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Fuel Injector leaking at O ring

 
Old 06-12-2019, 07:55 PM
  #1  
cdm747
CF Senior Member
Support Corvetteforum!
Thread Starter
 
cdm747's Avatar
 
Member Since: Jan 2017
Location: Diamondhead Mississippi
Posts: 562
Received 88 Likes on 72 Posts
St. Jude Donor '17-'18-'19
Default Fuel Injector leaking at O ring

I just installed a set of Bosch III injectors from FIC. Followed their directions. I tried to pressurize the fuel rail before reinstalling runners and plenum but it would only go up to about 12 pounds. I only reconnected the battery for the test. all other wiring was still loose (taped up alternator lead to keep from shorting). First any idea why pressure would not go higher and second what could be causing leak at #2. I will take the rail loose tomorrow and check the O ring to make sure it looks OK.
I did lightly oil them as per the directions and seated them in the manifold first. I did not use the clips in the rail as instructions from FIC say not to use them.
cdm747 is offline  
Old 06-12-2019, 10:45 PM
  #2  
jv9999
CF Senior Member
 
jv9999's Avatar
 
Member Since: Jan 2014
Location: Lunenburg MA
Posts: 1,144
Received 76 Likes on 76 Posts
Default

Sometimes the two o-ring trick doesn't seal on the first try. I bet it will if you just reinstall it. In my experience, once they seal they stay that way. The 12lbs could be because of the leak.
jv9999 is offline  
Old 06-13-2019, 09:40 AM
  #3  
cdm747
CF Senior Member
Support Corvetteforum!
Thread Starter
 
cdm747's Avatar
 
Member Since: Jan 2017
Location: Diamondhead Mississippi
Posts: 562
Received 88 Likes on 72 Posts
St. Jude Donor '17-'18-'19
Default

Originally Posted by jv9999 View Post
Sometimes the two o-ring trick doesn't seal on the first try. I bet it will if you just reinstall it. In my experience, once they seal they stay that way. The 12lbs could be because of the leak.
It isn't leaking at the intake where the double O rings are, it is leaking at the top where it goes into the fuel rail. It was just a small leak it just did not seem like the pump cycled long enough. Not sure if this is because most of the wiring on the top of the engine is disconnected and moved out of the way. Is it possible this would affect the signal from the ECM to the pump to run. I did notice when I tried cycling the pump again with KOEO that my dash was acting weird.
cdm747 is offline  
 


Thread Tools
Search this Thread
Quick Reply: Fuel Injector leaking at O ring


Contact Us - About Us - Archive - 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: