Cruisers Forum
 


Join CruisersForum Today

Reply
 
Thread Tools Rate Thread Display Modes
Old 28-05-2011, 06:10   #16
Senior Cruiser
 
atoll's Avatar

Cruisers Forum Supporter

Join Date: Mar 2010
Location: gettin naughty on the beach in cornwall
Boat: 63 custom alloy sloop,macwester26,prout snowgoose 37 elite catamaran!
Posts: 9,311
Images: 75
Re: Confounding Diesel Problem - looking for ideas.

before rebuilding the whole fuel system,run the engine from a 1 gal tank.

rebuilt mine only to find the problem was the bleed screw/thread stripped on the filter attached to the engine!!!
__________________

__________________
my catamaran building project updates http://www.cruisersforum.com/forums/...36#post2502136
atoll is offline   Reply With Quote
Old 28-05-2011, 07:05   #17
ehh
Registered User

Join Date: Feb 2011
Posts: 12
Re: Confounding Diesel Problem - looking for ideas.

Try disconnecting the stop solenoid.
__________________

__________________
ehh is offline   Reply With Quote
Old 28-05-2011, 07:28   #18
Registered User

Join Date: Aug 2009
Location: Hudson Valley N.Y.
Boat: contessa 32
Posts: 826
Re: Confounding Diesel Problem - looking for ideas.

Try replacing fuel lines with clear( diesel compatable) hose and run engine for a few days,any air leaks will show up as bubbles in the hose and air leaks can be traced back to source if any show up.
Once spent many thousands of $$$$$ replacing parts and even removed a perefectly fine diesel engine only to find the new diesel had the same issues. A 1/4 turn with a screw driver solved all by tightening a hose clamp. A number a top mechanics couldn't figure it out. Wish I had all that wasted money and time today.
__________________
mrohr is offline   Reply With Quote
Old 28-05-2011, 09:41   #19
Registered User

Join Date: Feb 2011
Location: South-East Australia coast
Boat: 40ft fibreglass sloop
Posts: 163
Re: Confounding Diesel Problem - looking for ideas.

Quote:
Originally Posted by mrohr View Post
Try replacing fuel lines with clear( diesel compatable) hose
Good idea. Mrohr, I know you mean only to use these lines in the short term, but may I ask anyway whether you are referring to PVC hose (even fuel-rated pvc seems to harden up fairly quickly and thus become difficult to clamp airtight), or some other type of transparent hose material that actually remains supple over time? I've been looking out for the latter for a while, but haven't found any.
__________________
Marqus is offline   Reply With Quote
Old 28-05-2011, 09:47   #20
cat herder, extreme blacksheep
 
zeehag's Avatar

Cruisers Forum Supporter

Join Date: Jul 2008
Location: furycame alley , tropics, mexico for now
Boat: 1976 FORMOSA yankee clipper 41
Posts: 17,767
Images: 56
Send a message via Yahoo to zeehag Send a message via Skype™ to zeehag
Re: Confounding Diesel Problem - looking for ideas.

haD SIMILAR PROBLEM 21 times on way from ensenada to mazatlan-- bled system 21 times. found clogged intake to filters from pickup, found airleaks, found all kinds of situations--mstly involving dirty filters from dirty fuel sloshing around in seas.... goood luck and may the gods of fuel be kindly to ye.... fair winds
zeehag is online now   Reply With Quote
Old 28-05-2011, 09:49   #21
Registered User
 
mbianka's Avatar

Join Date: Mar 2008
Posts: 2,125
Images: 1
Re: Confounding Diesel Problem - looking for ideas.

Quote:
Originally Posted by mrohr View Post
Try replacing fuel lines with clear( diesel compatable) hose and run engine for a few days,any air leaks will show up as bubbles in the hose and air leaks can be traced back to source if any show up.
Once spent many thousands of $$$$$ replacing parts and even removed a perefectly fine diesel engine only to find the new diesel had the same issues. A 1/4 turn with a screw driver solved all by tightening a hose clamp. A number a top mechanics couldn't figure it out. Wish I had all that wasted money and time today.
Ouch! This sounds familiar. I spent a whole season and $$$ while on a mooring scratching my head trying to get my diesel engine to start and then paying mechanics to scratch their heads too. Turns out it was a cracked cylinder head. Learned a lot about the diesel engine though. Mostly to get rid of it and replace it electric propulsion.
__________________
Capt. Mike
mbianka is offline   Reply With Quote
Old 28-05-2011, 10:46   #22
Registered User

Join Date: Feb 2011
Posts: 586
Images: 3
Re: Confounding Diesel Problem - looking for ideas.

Let us know what you finally find. Eliminate the simple stuff first: critter nests in tank vent, cracked hoses, loose clamps, sludge, loose pump bolts, loose banjo bolts , clogged engine filters or bad seal there. Sounds like you have eliminated the tank and filter hardware, since you can swing from one to the other.
__________________
smurphny is offline   Reply With Quote
Old 28-05-2011, 12:51   #23
Registered User

Join Date: Feb 2008
Location: Whidbey Island
Boat: Bluewater Ingrid 38 Ketch- September
Posts: 76
Re: Confounding Diesel Problem - looking for ideas.

Have you looked at possible intake air starvation? We have a very tight engine box and had similar problems at high revs. Propping the cover open was a quick temporary fix.
__________________
jrogers is offline   Reply With Quote
Old 28-05-2011, 13:21   #24
Registered User
 
sabray's Avatar

Join Date: Aug 2008
Location: Wash DC
Boat: PETERSON 44
Posts: 3,169
Sailed off the mooring 3 hours ago. Solar panels are keeping up with the cold beer demand.why do we have these thongs bolted to our keels.
Attached Thumbnails
Click image for larger version

Name:	image-2962653449.jpg
Views:	129
Size:	138.0 KB
ID:	27871  
__________________
sabray is offline   Reply With Quote
Old 28-05-2011, 16:48   #25
Registered User

Join Date: Sep 2008
Location: Camden, ME
Boat: A Thistle and a Hallberg-Rassy 36
Posts: 661
Engine revs up just fine, until an hour or two have passed and it starts to stumble. I've checked all the fittings. Engine fuel filter collar took a little more hand tightening, but not much. I like the clear fuel line idea. We'll see if anything has changed.

Chip
__________________
SoonerSailor is offline   Reply With Quote
Old 28-05-2011, 17:12   #26
Registered User
 
sabray's Avatar

Join Date: Aug 2008
Location: Wash DC
Boat: PETERSON 44
Posts: 3,169
Is there a manual pump . I have seen fuel pumps especially manual ones work fine until the seals get warm. Then they suck enough sir to fail.
__________________
sabray is offline   Reply With Quote
Old 29-05-2011, 05:32   #27
Registered User
 
doug86's Avatar

Join Date: Nov 2009
Location: Between Block Island and Bahamas
Boat: Marine Trader 40' Sedan Trawler, 1978. WATER TORTURE
Posts: 715
Re: Confounding Diesel Problem - Looking for Ideas

well, if you have ruled out vents and pick-up tubes, then we are left with either a source of air into the lines... or ....

I saw a case where the fuel shut off cable was getting stressed by some loose gear in the locker between engine and cockpit. It produced the same symptoms you describe. If you have an electrically activated shutdown, then it could be out of adjustment or faulty.

Also, I had a faulty Racor gauge once; it had a small air leak and would allow air into the system. Engine would shut down after a few hours and need a quick bleed, then start right up. Took a few weeks before I removed the gauge and the problem went away. I sent it to Racor and they sent me a new one. You might try taking that out and see what happens.
__________________
"When one is willing to go without, then one is free to go." - doug86
doug86 is offline   Reply With Quote
Old 29-05-2011, 05:58   #28
Senior Cruiser
 
atoll's Avatar

Cruisers Forum Supporter

Join Date: Mar 2010
Location: gettin naughty on the beach in cornwall
Boat: 63 custom alloy sloop,macwester26,prout snowgoose 37 elite catamaran!
Posts: 9,311
Images: 75
Re: Confounding Diesel Problem - Looking for Ideas

check the bleed screw on the engine filter,after repeated bleedings the alumilimium threads on the filter body can easily strip from over tightening and cause a problem such as yours
__________________
my catamaran building project updates http://www.cruisersforum.com/forums/...36#post2502136
atoll is offline   Reply With Quote
Old 29-05-2011, 06:23   #29
Registered User

Join Date: Sep 2008
Location: Camden, ME
Boat: A Thistle and a Hallberg-Rassy 36
Posts: 661
This engine self bleeds, there is no bleed screw Im aware of. I suppose there could be an air leak that at some point the self bleed system cant handle.
__________________
SoonerSailor is offline   Reply With Quote
Old 29-05-2011, 06:35   #30
Senior Cruiser
 
atoll's Avatar

Cruisers Forum Supporter

Join Date: Mar 2010
Location: gettin naughty on the beach in cornwall
Boat: 63 custom alloy sloop,macwester26,prout snowgoose 37 elite catamaran!
Posts: 9,311
Images: 75
Re: Confounding Diesel Problem - Looking for Ideas

there must be a bleed screw on the filter housing for when filters are changed.

but if it has not been repeatedly used then it is unlikely to be the source of the problem.

even self bleed systems have bleed points,may be gently check for tightness on the 10mm bolts on the injector body and top of filter body.
__________________

__________________
my catamaran building project updates http://www.cruisersforum.com/forums/...36#post2502136
atoll is offline   Reply With Quote
Reply

Tags
diesel, fuel starvation, westerbeke

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
Anyone Else Have a Major Problem with Diesel Fumes ? Bill E Powered Boats 35 24-06-2011 13:16
Terrible Problem w/ A-4 - Almost Ran Aground - Ideas? CruiserHopeful Engines and Propulsion Systems 39 09-07-2009 13:38
problem with yanmar diesel pete33458 Engines and Propulsion Systems 28 08-10-2008 21:15
Wierd Starting Problem - Diesel KipHansen Engines and Propulsion Systems 27 14-02-2008 09:31



Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 06:24.


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.