Cruisers Forum
 


Reply
  This discussion is proudly sponsored by:
Please support our sponsors and let them know you heard about their products on Cruisers Forums. Advertise Here
 
Thread Tools Search this Thread Rate Thread Display Modes
Old 15-04-2012, 06:02   #1
Registered User

Join Date: Apr 2006
Posts: 4,413
Self Healing Fuel Leak

I don't know what to make of this and would appreciate the comments of other forum members.

Last summer the one injector pump (of 3) on my MD17D developed a leak and it was a tiny o- ring that hat failed. I replaced it and everything seemed to be fine (I should have replaced all three at the time but didn't)

Last winter about December I winterized the engine and discovered what appeared to be a leak from another of the pumps (#2 of 3). I planned to replace all the o-rings this week. It's an all day job so I was not looking forward to it.

I fired up the engine for the first time yesterday and looked for the leak. Sure enough it was there. I let the engine run until it reached normal operating temperature and the leak seemed to have stopped... or been so reduced that I could not see it. I'll check again today.

I was thinking that the cold engine block allowed for a poor seal and so both in December and then first start yesterday the block was cold and so the leak presented. When the block heated up... the leak stopped. Note the original (repaired) leak manifest even in a hot engine and seems to not be showing a leak even with a cold block.

I suppose I should replace all the o-rings but it's a real PITA and I'd love to pass on it at least for the time being...if it doesn't leak with a warm block.

What say you?
Attached Thumbnails
Click image for larger version

Name:	Injector Pump MD17D.jpg
Views:	176
Size:	417.6 KB
ID:	39957  
Sandero is offline   Reply With Quote
Old 15-04-2012, 06:14   #2
Moderator Emeritus
 
Hudson Force's Avatar

Cruisers Forum Supporter

Join Date: Nov 2008
Location: Lived aboard & cruised for 45 years,- now on a chair in my walk-in closet.
Boat: Morgan OI 413 1973 - Aythya
Posts: 8,453
Images: 1
Re: Self Healing Fuel Leak

I think your idea that the leaks diminish with heat expansion is sound reasoning; however, as the leaks appeared from an earlier condition without leaks, I would expect them to continue getting worse. I would repair them at the time you choose and when you are prepared to complete the job instead of waiting.
__________________
Take care and joy, Aythya crew
Hudson Force is offline   Reply With Quote
Old 22-04-2012, 10:19   #3
Registered User

Join Date: Apr 2006
Posts: 4,413
Re: Self Healing Fuel Leak

I took the advice and changed the o rings on the other two pumps... YUCK... Anyway... job is done.
Sandero is offline   Reply With Quote
Old 22-04-2012, 11:15   #4
Sponsoring Vendor
 
Tellie's Avatar

Community Sponsor

Join Date: Oct 2007
Location: Hollywood, Fl.
Boat: FP Athena 38' Poerava
Posts: 3,984
Re: Self Healing Fuel Leak

It sure would be nice if things fixed themselves.
Tellie is offline   Reply With Quote
Reply

Tags
fuel

Thread Tools Search this Thread
Search this Thread:

Advanced Search
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


Advertise Here


All times are GMT -7. The time now is 02:06.


Google+
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2024, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2024, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.