Cruisers Forum
 


Join CruisersForum Today

Reply
 
Thread Tools Rate Thread Display Modes
Old 23-04-2015, 10:18   #1
Registered User

Join Date: Apr 2014
Posts: 13
Injector leaking.

I have a westerbeke 33 hp engine and the injectors are leaking.

The arrow show where it is coming from, all 4 of them are leaking, i did try to tight them up but it dident stop it.

Wondering if the bottom gasket is still good since it was wet also.

My question is what should i do should i take it off or i can fix it like
that ? Maybe use teflon and tight them real good ?

Thanks for the help.
Attached Thumbnails
Click image for larger version

Name:	injec.jpg
Views:	130
Size:	379.5 KB
ID:	100815  
__________________

soyuz is offline   Reply With Quote
Old 23-04-2015, 10:34   #2
Moderator
 
a64pilot's Avatar

Cruisers Forum Supporter

Join Date: Oct 2013
Location: Albany Ga.
Boat: Island Packet 38
Posts: 18,410
Re: Injector leaking.

I want to think that is a flare fitting and if so the seal is metal to metal.
I would not use Teflon tape, but all four leaking actually has me stumped.
I'd be very careful just trying to tighten them, that often leads to something you don't want
__________________

a64pilot is offline   Reply With Quote
Old 23-04-2015, 13:04   #3
Senior Cruiser
 
DeepFrz's Avatar

Cruisers Forum Supporter

Join Date: Mar 2006
Location: Winnipeg
Boat: None at this time
Posts: 7,949
Re: Injector leaking.

I strongly suggest you do not use teflon tape or any other type of pipe dope.

Do you have a flare wrench to fit the nuts? They will help to distribute the load when tightening but don't reef hard on them. I would start by taking one off and figuring out what you can do to stop the leak. Just work with one to start with and when you get it figured out you can work with the others.
DeepFrz is offline   Reply With Quote
Old 23-04-2015, 13:22   #4
Registered User

Join Date: Jan 2013
Posts: 203
Re: Injector leaking.

If the nuts are tight and leaking, there is a good chance the flair on the end of the line is bad.

I would hold the bottom hex and loosen and then re-tighten the top. If that don't work, you will need new lines.

They look pretty chewed up, been bleeding the fuel system?

Sent from my VS840 4G using Cruisers Sailing Forum mobile app
twinboat is offline   Reply With Quote
Old 23-04-2015, 13:38   #5
Registered User
 
ranger42c's Avatar

Join Date: Aug 2012
Location: Maryland, USA
Boat: 42' Sportfish
Posts: 3,168
Re: Injector leaking.

Quote:
Originally Posted by a64pilot View Post
I'd be very careful just trying to tighten them, that often leads to something you don't want

Quote:
Originally Posted by DeepFrz View Post
Do you have a flare wrench to fit the nuts? They will help to distribute the load when tightening but don't reef hard on them.

Yep. The engine manual may provide torque values. If they're torqued to appropriate values and still leaking... then maybe parts replacement is the next step.

-Chris
__________________
Selby Bay, South River, Chesapeake Bay, USA.
ranger42c is offline   Reply With Quote
Old 23-04-2015, 13:48   #6
Registered User

Join Date: Apr 2014
Posts: 13
Re: Injector leaking.

Quote:
Originally Posted by twinboat View Post
If the nuts are tight and leaking, there is a good chance the flair on the end of the line is bad.

I would hold the bottom hex and loosen and then re-tighten the top. If that don't work, you will need new lines.

They look pretty chewed up, been bleeding the fuel system?

Sent from my VS840 4G using Cruisers Sailing Forum mobile app
They are chewed up because we did tight them pretty good.
soyuz is offline   Reply With Quote
Old 23-04-2015, 13:52   #7
Registered User
 
Stu Jackson's Avatar

Join Date: Jan 2011
Location: Cowichan Bay, BC (Maple Bay Marina)
Posts: 6,607
Re: Injector leaking.

What are the real-world chances of all four of them starting to leak at the same time?

It could well be that your attempts to tighten them has torqued the base of the entire assembly and cause IT to leak, rather than the individual injectors.

Consider that, although I do admit I am not familiar with that particular assembly on your engine.

Good luck.
__________________
Stu Jackson
Catalina 34 #224 (1986) C34IA Secretary
Cowichan Bay, BC, (Maple Bay Marina) SR/FK, M25, Rocna 10 (22#) (NZ model)
Stu Jackson is offline   Reply With Quote
Old 23-04-2015, 14:00   #8
Registered User

Join Date: Jul 2014
Posts: 324
Re: Injector leaking.

soyuz--

In your post you say all 4 injectors are leaking,though the photo shows the injection pump and arrow to banjo line feeder bolt.

Injectors screw directly into cylinder/head.

which IS IT.???

If pump line connections,may just need reflare or re"double flare".Possibly copper washers...same with injectors at cylinders,or all just may be loose though I doubt it.Often older pumps could use a thorough o-ring kitting and/or rebuild to end leaks.

I suggest diesel mechanic just to take a look !
Experience always tells the story.


All the Best
Arthur Garfield is offline   Reply With Quote
Old 23-04-2015, 14:00   #9
Registered User

Join Date: Mar 2009
Posts: 219
Re: Injector leaking.

Double flares on steel tube can often be fixed by simply putting the existing flared end in the flaring tool and doing the final flaring step once again. .Make sure the threads in the flare nut are good while you have the line out. If the flare to thread fitting coming out of the pump is bad in any way simply replace.


Flare wrenches are almost mandatory to properly torque steel flares.No lube, no dope, no Teflon.Just clean threads.
I suspect someone has turned the flare nuts into oval flare nuts by using open end wrenches. If this is the case, you may need to start over with new lines and nuts but I have successfully straightened a few with the judicious use of a hammer and the anvil.
um saudade is offline   Reply With Quote
Old 24-04-2015, 01:41   #10
Registered User

Join Date: Jan 2013
Posts: 203
Re: Injector leaking.

They are not brake lines here, guys. It's not a simple double flair.

The nuts are not thin brass, they are thick steel and don't need line wrenches.

They ARE the injectors, that send the fuel to the nozzles in the cylinder head.

The lines can fail from years of 20,000 pound, pulses.

To the original poster, are you sure they all leak or is one spraying on the others. I had to slip cardboard between mine, to find the fine mist leak.

Good luck

Sent from my VS840 4G using Cruisers Sailing Forum mobile app
__________________

twinboat is offline   Reply With Quote
Reply

Thread Tools
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Leaking CAV injector pump on Perkins 4-154 - Help gchabs Engines and Propulsion Systems 4 29-12-2012 20:50
Leaking Injector Pump Nemos Engines and Propulsion Systems 30 19-11-2012 13:53
High Pressure Fuel Lines Leaking at Injector Killick Engines and Propulsion Systems 4 13-08-2012 19:49
Leaking Connection to Injector on Prima M50 Wayward Engines and Propulsion Systems 1 15-02-2011 04:25
Perkins 4.108 Injector Pump Leaking Fuel Mike Sibley Engines and Propulsion Systems 19 16-10-2009 20:53



Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 23:24.


Google+
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2018, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2018, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.