Cruisers Forum
 


Join CruisersForum Today

Reply
 
Thread Tools Rate Thread Display Modes
Old 16-12-2014, 21:19   #16
Moderator
 
sailorchic34's Avatar

Cruisers Forum Supporter

Join Date: Feb 2011
Location: SF Bay Area
Boat: Islander 34
Posts: 4,812
Re: 3gm30f camshaft seal leak

Quote:
Originally Posted by Quixotic View Post
Sailorchic, I checked the breather and found no clogs. Do I check the condition of the rings by testing the compression in each cylinder?
Yes exactly, though the poor girl test is to start the engine and pull each decompression lever and see if one cylinder is different from the rest. The intent is to see if all cylinders sound the same with each decompression lever pull. That is there's no real difference. No difference is good. A weak cylinder won't cause much of a change in engine speed.
If the rings are bad on one cylinder if you remove the oil fill cap with the engine running you should see lots of grey smoke out of of the oil fill hole. That with 1 cylinder being weak and oil leaking from odd locations, it's a pretty good sign that there's a ring issue with one cylinder or more. Don't ask me how I know. Been there done that
__________________

__________________
sailorchic34 is offline   Reply With Quote
Old 21-12-2014, 13:36   #17
Registered User

Join Date: Feb 2012
Posts: 33
Re: 3gm30f camshaft seal leak

Quote:
Originally Posted by sailorchic34 View Post
Yes exactly, though the poor girl test is to start the engine and pull each decompression lever and see if one cylinder is different from the rest. The intent is to see if all cylinders sound the same with each decompression lever pull. That is there's no real difference. No difference is good. A weak cylinder won't cause much of a change in engine speed.
If the rings are bad on one cylinder if you remove the oil fill cap with the engine running you should see lots of grey smoke out of of the oil fill hole. That with 1 cylinder being weak and oil leaking from odd locations, it's a pretty good sign that there's a ring issue with one cylinder or more. Don't ask me how I know. Been there done that
Well I finally got around to trying what sailor chic recommended and good news there is no smoke coming from the oil fill cap and no real audible difference between the individual cylinders when I pull their respective decompression levers. At this point I plan on just replacing the oil seal on the camshaft and monitoring it for further leaks. I will also keep an eye on the leak from beneath the fuel injection pump and see if it gets worse.
__________________

__________________
Quixotic is offline   Reply With Quote
Reply

Tags
3gm, 3gm30, shaft seal

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
UNIVERSAL M25XPB, M25XPBC, M35B AND M35BC CamShaft Failure GordMay Engines and Propulsion Systems 1 13-12-2013 08:00
Perkins 4-108 camshaft removal in boat brutb Engines and Propulsion Systems 6 17-02-2013 09:47
Perkins 4108 camshaft freeze plug? whyknot Engines and Propulsion Systems 2 05-02-2013 20:54
Camshaft saga Construction, Maintenance & Refit 5 29-08-2010 19:28
Reduction Gear oil seal replacement Yanmar 3gm30F upsidedown Engines and Propulsion Systems 4 23-07-2008 22:04



Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 15:57.


Google+
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.