Fueling & Injection Fuel Pumps | Injectors | Rails | Regulators | Tanks

Q. installing fuel injectors without damaging the o-ring

Thread Tools
 
Search this Thread
 
Old 01-04-2007, 06:34 PM
  #1  
TECH Fanatic
Thread Starter
iTrader: (26)
 
Michael02hawk's Avatar
 
Join Date: Feb 2005
Location: Rochester, NY
Posts: 1,155
Likes: 0
Received 1 Like on 1 Post
Default Q. installing fuel injectors without damaging the o-ring

I've tried using some engine oil & vaseline on the injector o-ring and fuel rail hole, i can get the injector to snap in, but every time a small piece of the o-ring gets clipped. This cant be good!

I have a new set of o-rings from the dealer, and I dont want to ruin them. I have my old rings now that I'm experimenting with.

Whats the trick to installing the injectors into the fuel rails without damaging the o-ring?

btw, the rails are high flow from speedinc.
Old 01-04-2007, 07:02 PM
  #2  
TECH Resident
 
andereck's Avatar
 
Join Date: Oct 2005
Posts: 787
Likes: 0
Received 0 Likes on 0 Posts
Default

I use white lithium grease. By the way the white o-rings are extremely soft and tear very easily. Yours shouldn't be the white material...its just fyi.
Old 01-04-2007, 09:44 PM
  #3  
10 Second Club
 
Gary Z's Avatar
 
Join Date: Nov 2002
Location: Berkeley, California
Posts: 1,471
Likes: 0
Received 1 Like on 1 Post

Default

The service manual says the o-rings should be lubricated with engine oil. This works fine with the stock setup - maybe you need to do some deburring.
Old 01-05-2007, 07:38 AM
  #4  
TECH Fanatic
Thread Starter
iTrader: (26)
 
Michael02hawk's Avatar
 
Join Date: Feb 2005
Location: Rochester, NY
Posts: 1,155
Likes: 0
Received 1 Like on 1 Post
Default

"White O-Rings"? I'm not sure what they white ones are, mine are stock black rings.

Anyway, when inserting the injectors into the first rail, was a bit of a challange (like I described above), but I was finally able to get all 4 in, without damaging the o-rings. Then the injectors/rail snapped right into the manifold nicely.

But strangly enough, the 2nd rail didnt give me a hard time at all!
All 4 injectors popped into the rail smoothly and snuggly.

I've completed the setup, and the Fast 90/90 is installed and looks great. I wont know how well it runs till winter breaks, another 2 monthg or so.

Thanks all.
Old 01-05-2007, 07:48 AM
  #5  
TECH Addict
iTrader: (29)
 
erikthegoalie's Avatar
 
Join Date: Apr 2005
Location: Margate, FL
Posts: 2,269
Likes: 0
Received 0 Likes on 0 Posts

Default

heres what I did and it was FREE....dap a lil spit on your finger tip, rub it on the o ring...insert where neccesary....done

Old 01-05-2007, 07:50 AM
  #6  
TECH Addict
iTrader: (29)
 
erikthegoalie's Avatar
 
Join Date: Apr 2005
Location: Margate, FL
Posts: 2,269
Likes: 0
Received 0 Likes on 0 Posts

Default

Originally Posted by Michael02hawk
Anyway, when inserting the injectors into the first rail, was a bit of a challange (like I described above), but I was finally able to get all 4 in, without damaging the o-rings. Then the injectors/rail snapped right into the manifold nicely.

But strangly enough, the 2nd rail didnt give me a hard time at all!
All 4 injectors popped into the rail smoothly and snuggly.

Its funny you say that....i just bought some 42# green tops...and I have the speed inc rails on my FAST 90...and they seemed to just slide in easily....MUCH easier than the stockers...I am a little concerned about this...but Im sure it will be fine!

Anyone have any ideas as to why it is not a tighter fit?
Old 01-08-2020, 10:52 PM
  #7  
Registered User
 
Dan Chase's Avatar
 
Join Date: Jan 2020
Posts: 1
Likes: 0
Received 0 Likes on 0 Posts
Default 13 years later any issues?

Originally Posted by Michael02hawk
"White O-Rings"? I'm not sure what they white ones are, mine are stock black rings.

Anyway, when inserting the injectors into the first rail, was a bit of a challange (like I described above), but I was finally able to get all 4 in, without damaging the o-rings. Then the injectors/rail snapped right into the manifold nicely.

But strangly enough, the 2nd rail didnt give me a hard time at all!
All 4 injectors popped into the rail smoothly and snuggly.

I've completed the setup, and the Fast 90/90 is installed and looks great. I wont know how well it runs till winter breaks, another 2 monthg or so.

Thanks all.
I have a question, 13 years later, did you end up having any issues? When I read your post I thought maybe you put the thick o-rings on the bottom instead of the top, but thought it'd be interesting to ask you, anyway?

Thank you,
Dan Chase
Old 01-08-2020, 10:56 PM
  #8  
TECH Senior Member
 
G Atsma's Avatar
 
Join Date: Jun 2016
Location: Central Cal.
Posts: 20,878
Received 3,022 Likes on 2,353 Posts
Default

MichaelO2hawk hasn't been here since 2011
Old 01-09-2020, 01:02 PM
  #9  
On The Tree
 
AUS Injection's Avatar
 
Join Date: Aug 2018
Location: Tempe, AZ
Posts: 182
Received 22 Likes on 19 Posts
Default

Originally Posted by G Atsma
MichaelO2hawk hasn't been here since 2011



Quick Reply: Q. installing fuel injectors without damaging the o-ring



All times are GMT -5. The time now is 01:29 AM.