Compression fittings at injector leaking - SailNet Community

   Search Sailnet:

 forums  store  


Quick Menu
Forums           
Articles          
Galleries        
Boat Reviews  
Classifieds     
Search SailNet 
Boat Search (new)

Shop the
SailNet Store
Anchor Locker
Boatbuilding & Repair
Charts
Clothing
Electrical
Electronics
Engine
Hatches and Portlights
Interior And Galley
Maintenance
Marine Electronics
Navigation
Other Items
Plumbing and Pumps
Rigging
Safety
Sailing Hardware
Trailer & Watersports
Clearance Items

Advertise Here






Go Back   SailNet Community > On Board > Gear & Maintenance > Engines > Diesel
 Not a Member? 


Like Tree2Likes
  • 1 Post By BELLATRIX1965
  • 1 Post By jrd22
Reply
 
LinkBack Thread Tools
  #1  
Old 08-12-2012
Senior Member
 
Join Date: Feb 2008
Posts: 164
Thanks: 1
Thanked 0 Times in 0 Posts
Rep Power: 7
preservedkillick is on a distinguished road
Compression fittings at injector leaking

I just replaced the copper washers at the bottom of my injectors, and now I have a leak at one of the fittings where the fuel pipe connects to the injector with a compression fitting. Is it common to use some sort of sealant (teflon paste or tape) on the fittings? I'd hate to get some teflon tape in the injector!

Advice from experience?

Thanks

PK
__________________
Preserved Killick


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

Seagrass
Boothbay Harbor, ME
Alberg 30:
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Reply With Quote Quick reply to this message Share with Facebook
  #2  
Old 08-12-2012
sea_hunter's Avatar
Senior Cruiser
 
Join Date: Jul 2000
Posts: 512
Thanks: 0
Thanked 1 Time in 1 Post
Rep Power: 15
sea_hunter is on a distinguished road
Did you put them in the right way? One side is down the other up, but once crushed they need to be replaced perhaps they haven't seated, loosen the nuts then retighten them. Don't over tighten, if your unsure check your manual for the proper torque.
Reply With Quote Quick reply to this message Share with Facebook
  #3  
Old 08-12-2012
jrd22's Avatar
Courtney the Dancer
 
Join Date: Nov 2000
Location: San Juan Islands., WA, USA
Posts: 3,843
Thanks: 3
Thanked 16 Times in 16 Posts
Rep Power: 15
jrd22 will become famous soon enough
Re: Compression fittings at injector leaking

Are you talking about the crush washers on the return line? Usually the high pressure supply line is a flare fitting on the top of the injector. If the crush washers on the return are leaking get two new washers and torque to factory specs.
__________________
John
SV Laurie Anne

1988 Brewer 40 Pilothouse

Reply With Quote Quick reply to this message Share with Facebook
  #4  
Old 08-13-2012
Senior Member
 
Join Date: Feb 2008
Posts: 164
Thanks: 1
Thanked 0 Times in 0 Posts
Rep Power: 7
preservedkillick is on a distinguished road
Re: Compression fittings at injector leaking

Quote:
Originally Posted by jrd22 View Post
Are you talking about the crush washers on the return line? Usually the high pressure supply line is a flare fitting on the top of the injector. If the crush washers on the return are leaking get two new washers and torque to factory specs.
I should have been more accurate, yes I'm talking about the high pressure supply line. Where 11 meets 6.



https://picasaweb.google.com/lh/phot...eat=directlink
__________________
Preserved Killick


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

Seagrass
Boothbay Harbor, ME
Alberg 30:
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

Last edited by preservedkillick; 08-13-2012 at 08:54 AM. Reason: added photo
Reply With Quote Quick reply to this message Share with Facebook
  #5  
Old 09-09-2012
BELLATRIX1965's Avatar
Maine Member
 
Join Date: Jan 2007
Location: Penobscot Bay Maine
Posts: 175
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 8
BELLATRIX1965 is on a distinguished road
Re: Compression fittings at injector leaking

High pressure fuel lines should be made up clean and dry - NEVER put anything in that area (even anti-sieze) that could be carried into the fuel injector and plug up the fuel passages / injector tip orifices. I would try: inspect the seating surfaces, carefully spraying the fuel line end and injector HP connection fitting with quick-dry degreaser, wipe clean with a lint-free rag, and re-torque to manufacturer's specs. If it still leaks, you may need to renew the HP fuel line and/or the injector inlet connector. High pressure diesel fuel is not very forgiving! Good luck, and let us know how you made out!
jrd22 likes this.
Reply With Quote Quick reply to this message Share with Facebook
  #6  
Old 09-09-2012
jrd22's Avatar
Courtney the Dancer
 
Join Date: Nov 2000
Location: San Juan Islands., WA, USA
Posts: 3,843
Thanks: 3
Thanked 16 Times in 16 Posts
Rep Power: 15
jrd22 will become famous soon enough
Re: Compression fittings at injector leaking

Sorry I didn't get back to you Preserved. I agree with what Bella said, no sealant. Most likely there is damage to one surface or the other or there is a crack in the line at the fitting.
Faster likes this.
__________________
John
SV Laurie Anne

1988 Brewer 40 Pilothouse

Reply With Quote Quick reply to this message Share with Facebook
  #7  
Old 10-27-2012
Junior Member
 
Join Date: Oct 2012
Posts: 13
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
Paladin is on a distinguished road
Re: Compression fittings at injector leaking

Remove the line in question. It has a built in seat that fits into female counterpart on injector. Check line for imprint of previous "fit". One tiny grain of sand can interupt this. fuel can be up to 3000PSI here. an improper fit/ angle can upset previous fit. You may have to loosen injector a touch to rotate a touch... very small amount.You shouldnt have to coax line into where its going. If it has been bent, it may not reseat correctly into socket on injector.
Reply With Quote Quick reply to this message Share with Facebook
Reply

Quick Reply
Message:
Options

By choosing to post the reply above you agree to the rules you agreed to when joining Sailnet.
Click Here to view those rules.

Register Now

In order to be able to post messages on the SailNet Community forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
Please note: After entering 3 characters a list of Usernames already in use will appear and the list will disappear once a valid Username is entered.
User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools

 
Posting Rules
You may post new threads
You may post replies
You may post attachments
You may edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Help! Leaking Injector Pump Classic30 Diesel 87 03-31-2014 01:29 PM
Fuel Injector Pump leaking Axle2121 Gear & Maintenance 18 10-02-2012 04:55 PM
Swaged fittings vs. mechanical fittings yachtthor Pacific Seacraft 24 04-21-2012 05:48 PM
Bleeding air at injector jslade8581 Diesel 26 02-26-2012 10:55 AM
Injector leaking CaptGum Diesel 0 02-24-2012 01:33 PM


All times are GMT -4. The time now is 05:51 AM.

Add to My Yahoo!         
Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
SEO by vBSEO 3.6.1
(c) Marine.com LLC 2000-2012

The SailNet.com store is owned and operated by a company independent of the SailNet.com forum. You are now leaving the SailNet forum. Click OK to continue or Cancel to return to the SailNet forum.