Cruisers Forum
 


Join CruisersForum Today

Reply
 
Thread Tools Rate Thread Display Modes
Old 03-11-2012, 20:07   #31
Eternal Member
 
Chief Engineer's Avatar

Join Date: Aug 2006
Location: North of Baltimore
Boat: Ericson 27 & 18' Herrmann Catboat
Posts: 3,798
Re: How Often to Start a Diesel Engine?

Quote:
Originally Posted by DeepFrz View Post
Go to about 1000 rpm after 5.5 seconds at idle, precisely. Then reduce to idle after 35.6 seconds, put in gear, throttle up to 1200 for 2 minutes, 1500 for 5.32 minutes and them up to cruise rpm...

What does your owner's manual say?
Owners manual? We don't read no steenking Owners Manual!!!!!!!!!!!!!

(We will bend over backwards....Don't expect us to bend over forwards!)
__________________

__________________
Chief Engineer is offline   Reply With Quote
Old 03-11-2012, 20:08   #32
Registered User
 
sabray's Avatar

Join Date: Aug 2008
Location: Wash DC
Boat: PETERSON 44
Posts: 3,169
Quote:
Originally Posted by estarzinger
I turn my engine over by hand several rotations, once a week. That seems to keep the cylinder walls oiled, without the wear of starting it up.

I know **** about diesels and that may be a stupid thing to do. . . but its worked ok so far for me.
Hand cranking is okay especially if your not sure. Better to run it up to temp and let the oil lube the valves and all..every once and a bit put it to load. Long term put it to bed with some fog stuff at the air intake.
__________________

__________________
sabray is offline   Reply With Quote
Old 03-11-2012, 20:21   #33
Senior Cruiser

Cruisers Forum Supporter

Join Date: Aug 2009
Location: between the devil and the deep blue sea
Boat: a sailing boat
Posts: 17,314
Re: How Often to Start a Diesel Engine?

Quote:
Originally Posted by estarzinger View Post
I turn my engine over by hand several rotations, once a week. That seems to keep the cylinder walls oiled, without the wear of starting it up.

I know **** about diesels and that may be a stupid thing to do. . . but its worked ok so far for me.
OK. I do this too - we have an old VP 7 that has a decompression lever and easily turned over by just pulling on the flywheel.

Do you think turning it by hand delivers oil to cylinder walls? I mean: the oil is in the sump, it is cold and thick, and maybe turning the engine by hand does not build enough pressure to get the oil to the cylinders. Just guessing aloud. Wondering if the lower bearings get any oil this way.

b.
__________________
barnakiel is offline   Reply With Quote
Old 03-11-2012, 20:35   #34
Senior Cruiser
 
DeepFrz's Avatar

Cruisers Forum Supporter

Join Date: Mar 2006
Location: Winnipeg
Boat: None at this time
Posts: 7,930
Re: How Often to Start a Diesel Engine?

Pull the decompression lever, make sure the fuel shutoff valve is closed, crank over by starter for 15 - 20 secs. That should pump the oil around. It won't clear any condensation out of the oil sump though. Only running it hard enough to heat the oil up to operating temp will do that.

I am not a diesel mechanic but I was an auto mechanic in a very cold climate so have seen what the acids in the oil sump can do to an engine.
__________________
DeepFrz is offline   Reply With Quote
Old 03-11-2012, 20:40   #35
Senior Cruiser

Cruisers Forum Supporter

Join Date: Aug 2009
Location: between the devil and the deep blue sea
Boat: a sailing boat
Posts: 17,314
Re: How Often to Start a Diesel Engine?

Quote:
Originally Posted by DeepFrz View Post
Go to about 1000 rpm after 5.5 seconds at idle, precisely. Then reduce to idle after 35.6 seconds, put in gear, throttle up to 1200 for 2 minutes, 1500 for 5.32 minutes and them up to cruise rpm...

What does your owner's manual say?
The manual does not discuss this aspect. It does say about NOT loading a cold engine and not shutting down a hot one.

So my plan is like this:

Once a week:

- start it, idle for about one minute,
- go in gear and rev up to cruise speed,
- let the engine sit there till it gets to its running temp,
- keep it like this some 5 minutes,
- go into idle and let it 'cool' for about one minute,
- stop it.


Does this sound OK?

b.
__________________
barnakiel is offline   Reply With Quote
Old 03-11-2012, 20:44   #36
Senior Cruiser

Cruisers Forum Supporter

Join Date: Aug 2009
Location: between the devil and the deep blue sea
Boat: a sailing boat
Posts: 17,314
Re: How Often to Start a Diesel Engine?

Bingo. Asked questions and heard the answers.

Thank you everybody!

barnakiel
__________________
barnakiel is offline   Reply With Quote
Old 03-11-2012, 20:45   #37
Senior Cruiser
 
DeepFrz's Avatar

Cruisers Forum Supporter

Join Date: Mar 2006
Location: Winnipeg
Boat: None at this time
Posts: 7,930
Re: How Often to Start a Diesel Engine?

Sounds okay, but I would personally go up to about 1/2 way between idle and cruise speed then to cruise after four or five minutes.
__________________
DeepFrz is offline   Reply With Quote
Old 03-11-2012, 21:34   #38
Registered User
 
Captain Jeffry's Avatar

Join Date: Feb 2012
Location: Southern California
Boat: 41' Sail
Posts: 420
Re: How Often to Start a Diesel Engine?

At the dock, every two weeks or so, I disconnect the AC, run my batteries down about 15%, run my engine to charge nats with alternator. Double up dock lines and run in forward at low rpms for a while as well. Shes happy
__________________
Captain Jeffry Matzdorff
100 Ton Master
Captain Jeffry is offline   Reply With Quote
Old 03-11-2012, 22:35   #39
Eternal Member
 
wolfenzee's Avatar

Join Date: Feb 2008
Location: Port Ludlow, WA (NW corner of Puget Sound)
Boat: 30' William Atkin cutter
Posts: 1,496
Send a message via ICQ to wolfenzee
Re: How Often to Start a Diesel Engine?

I was told by a diesel mechanic once a week, run long enough to get to operating tem then put in gear for a while
__________________
"It is better to die living than live dieing" (Tolstoy para-phrased by Jimmy Buffet)
"Those who think they know everything piss off those of us who do"
wolfenzee is offline   Reply With Quote
Old 03-11-2012, 22:37   #40
Registered User

Join Date: Oct 2011
Posts: 2,431
Re: How Often to Start a Diesel Engine?

Call the major oil distributors in your area and get a diesel rated Preservative oil. It is designed to outgas and coat the whole inside of the engine with oil vapor. It is OK to run the engine with this oil also, but it is also great for an untended engine. Running an engine(especially a raw water cooled engine) for only 5 or 10 minutes will not get the oil hot enough for any burning off of water or acids. If you cant find preservative oil at the dealers, go to an aviation shop and they will have it or know where to get it. The oil is not cheap, but one stuck valve will cost you more than 20 oil changes._____My 2 cents worth.____Grant.
__________________
gjordan is offline   Reply With Quote
Old 03-11-2012, 22:50   #41
Registered User
 
Celestialsailor's Avatar

Join Date: Nov 2006
Location: In Mexico, working on the boat
Boat: Hallberg Rassy 35. and 14ft.Whitehall pulling skiff.
Posts: 8,013
Images: 5
Re: How Often to Start a Diesel Engine?

There are about as many opinions here as posters. Why anyone would ask non-diesel mechanics is beyond me. Why not just ask, 1) The manufacturer. 2) A certified diesel mechanic or 3) A diesel rebuild shop.
When I bought this boat the engine would only rotate 350 degrees. The reason was that it has been started once a week, allowed to idle until warm, then shut off by the previous owners friends because the PO was very sick. This went on for a year and finally the PO past away. Then the boat sat for 1 1/2 years. The carbon that formed on top of the piston, swelled and prevented the piston from going over TDC.
I have a routine handed down to me by the machine shop that did all my machine work. You're best to stay away from armchair professionals.
__________________
"Life is not a journey to the grave with the intention of arriving safely in a pretty and well-preserved body, but rather to skid in broadside, thoroughly used up, totally worn out, and loudly proclaiming: Wow - what a ride!"

http://wwwjolielle.blogspot.com/
Celestialsailor is offline   Reply With Quote
Old 03-11-2012, 23:24   #42
Registered User
 
sabray's Avatar

Join Date: Aug 2008
Location: Wash DC
Boat: PETERSON 44
Posts: 3,169
So what is the routine?
__________________
sabray is offline   Reply With Quote
Old 04-11-2012, 00:07   #43
Moderator
 
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: 7,894
Images: 1
Re: How Often to Start a Diesel Engine?

I have 6,200 hours on my 4JH3E Yanmar and it continues to serve me well with little trouble. When I'm at the dock and not cruising I run my engine for one half hour a week. I leave it at idle in neutral until the temperature warms and then in forward at about 1200 rpm. I'm with those that suggest, "use it or lose it".
__________________
Take care and joy, Aythya crew
Hudson Force is offline   Reply With Quote
Old 04-11-2012, 03:00   #44
Registered User

Join Date: Oct 2010
Posts: 679
Re: How Often to Start a Diesel Engine?

Quote:
Originally Posted by Celestialsailor View Post
There are about as many opinions here as posters. Why anyone would ask non-diesel mechanics is beyond me...You're best to stay away from armchair professionals.
I wonder, have you ever asked this question of diesel mechanics? Because I have, and the answers are as varied as those in this thread.

So here's my routine: I turn by hand monthly (roughly monthly, not fanatically). When I'm goin someplace, which is not very often, I fire it up (decompressed at first) and give is a good long hot run.

As everyone else says: "Works for me"
__________________
Wand is offline   Reply With Quote
Old 04-11-2012, 04:17   #45
Registered User

Join Date: Apr 2011
Location: Cambridge MD
Boat: Carter offshore 35
Posts: 333
Re: How Often to Start a Diesel Engine?

I don't like to run it when it won't be under load and be able to warm up. My engine has compression releases so once a month with the fuel shut off and the comression released I spin the engine with the starter to move the oil around.
__________________

__________________
DeborahLee is offline   Reply With Quote
Reply

Tags
diesel, engine

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




Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 03:18.


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.