Reply
 
Thread Tools Search this Thread Display Modes
 
Old 08-02-2021, 05:39 PM   #1
Veteran Member
 
City: bainbridge
Vessel Name: Betty L
Vessel Model: 1973 Gulfstar
Join Date: May 2021
Posts: 39
Starting a long dormant diesel engine

Without going into a lot of detail, I want to get a diesel engine back into operation which has not been run in 10 years. It ran fine up until it wasn't used anymore.


So the question has to do with procedure. Obviously replace fuel filter(s), use fresh fuel, manually clear any air out of fuel line. Make sure input cooling water mechanism is working.



If and when it starts, change oil and filter. But that can't be done until it runs, so that the oil can be warmed up.


Any thoughts? Tips? Comments?


Thanks,
Bill
Kuncicky is offline   Reply With Quote
Old 08-02-2021, 05:48 PM   #2
Scraping Paint
 
City: nowhere
Join Date: Oct 2016
Posts: 934
My only comment is that you should definitely video the first start, because we'd all like to see it.
toocoys is offline   Reply With Quote
Old 08-02-2021, 05:58 PM   #3
Senior Member
 
ofer's Avatar
 
City: calabasas
Vessel Name: Unicorn
Vessel Model: 1970 50' DEFEVER OFFSHORE CRUISER Timber
Join Date: Apr 2020
Posts: 178
my recommendation is to do as little as possible. I would not touch any fuel related items at all. that will create questions if something goes wrong in the starting process.

only thing would be spinning the engine manually two complete turns. try it, if it starts turn it off and work on the rest of the supporting systems.
ofer is offline   Reply With Quote
Old 08-02-2021, 05:59 PM   #4
Senior Member
 
ofer's Avatar
 
City: calabasas
Vessel Name: Unicorn
Vessel Model: 1970 50' DEFEVER OFFSHORE CRUISER Timber
Join Date: Apr 2020
Posts: 178
Quote:
Originally Posted by toocoys View Post
My only comment is that you should definitely video the first start, because we'd all like to see it.
you have gas engines. they are the only ones needs videoing.
ofer is offline   Reply With Quote
Old 08-02-2021, 06:06 PM   #5
Guru
 
HiDHo's Avatar
 
City: Beverly Hills
Join Date: Feb 2012
Posts: 1,370
I’m no expert but I would remove the injectors, put some motor oil in each cylinder enough to cover the piston head so the cylinder walls get coated. Then turn the engine flywheel by hand to loosen up the rings. I would change the oil and filters before starting it. Clean fuel, bleed the injectors, cross your fingers and try starting it. Good Luck
HiDHo is offline   Reply With Quote
Old 08-02-2021, 06:27 PM   #6
Guru
 
High Wire's Avatar
 
City: Cape May, NJ and Englewood, FL
Vessel Name: Irish Lady
Vessel Model: Monk 36
Join Date: Dec 2007
Posts: 4,121
If it was mine, I would use a vacuum changer to suck out the old oil then replace with new before even hand barring over the engine. It canít hurt. Pumping 10 yo sludge through the bearings can.
__________________
Archie
Irish Lady
1984 Monk 36 Hull #46
Currently in Cape May NJ
High Wire is offline   Reply With Quote
Old 08-02-2021, 06:39 PM   #7
Guru
 
alormaria's Avatar
 
City: Trenton
Join Date: Apr 2012
Posts: 1,311
I would just start it.



But then, it's not mine.
__________________
Al Johnson
34' Marine Trader
"Angelina"
alormaria is offline   Reply With Quote
Old 08-02-2021, 07:56 PM   #8
Senior Member
 
City: Montgomery
Vessel Name: Choices
Vessel Model: 36 Grand Banks Europa
Join Date: Apr 2018
Posts: 409
If you replace oil, fill new filter. Try to prs oil system. Turn by hand then spin it up. Good luck.
__________________
36 Grand Banks Europa
Montgomery, TX
Blog: "grandbankschoices"
Choices is offline   Reply With Quote
Old 08-02-2021, 07:59 PM   #9
Senior Member
 
Solly's Avatar
 
City: Solomons MD.
Vessel Name: Sun Runner
Vessel Model: 1985 Mainship 34 Trawler MK III
Join Date: Mar 2018
Posts: 414
Think I'd go ahead and change the oil and filter too. Can't hurt getting any crud out you can and fresh oil would be a plus. Bump the starter to make sure it'll turn over. Then crank with the fuel shutoff engaged until you see some signs of oil pressure. Then let it fire up.
Solly is offline   Reply With Quote
Old 08-02-2021, 08:18 PM   #10
Senior Member
 
KnotYet's Avatar
 
City: Los Angeles
Join Date: Feb 2020
Posts: 496
Quote:
Originally Posted by HiDHo View Post
Iím no expert but I would remove the injectors, put some motor oil in each cylinder enough to cover the piston head so the cylinder walls get coated. Then turn the engine flywheel by hand to loosen up the rings. I would change the oil and filters before starting it. Clean fuel, bleed the injectors, cross your fingers and try starting it. Good Luck
For an engine that ran when it was stored R&R-ing the injectors is a lot of work.
Putting any liquid into a diesel cylinder is asking for hydrolock trouble, too. Go easy!

A lot depends on which engine you have and how it was stored. Was the boat on the dry?
__________________
Science doesn't care what you believe. -Neil deGrasse Tyson
KnotYet is offline   Reply With Quote
Old 08-02-2021, 08:19 PM   #11
Dwk
Senior Member
 
Dwk's Avatar
 
City: Chesapeake Bay,Middle River,Md.
Vessel Name: Patty Ann
Vessel Model: Mainship 34 MK1 1980
Join Date: Jan 2014
Posts: 249
Starting a dormant diesel

Following with interest,hoping Ski chimes in...
__________________
David
Dwk is offline   Reply With Quote
Old 08-02-2021, 08:39 PM   #12
TF Site Team
 
Bacchus's Avatar
 
City: Seneca Lake NY
Vessel Name: Bacchus
Vessel Model: MS 34 HT Trawler
Join Date: Nov 2014
Posts: 5,447
Quote:
Originally Posted by HiDHo View Post
Iím no expert but I would remove the injectors, put some motor oil in each cylinder enough to cover the piston head so the cylinder walls get coated. Then turn the engine flywheel by hand to loosen up the rings. I would change the oil and filters before starting it. Clean fuel, bleed the injectors, cross your fingers and try starting it. Good Luck
Good thought but wonder if a soak with some diesel would do better at penetrating & loosening up anything "sticky"?
Waiting for SKI to chime in here
__________________
Don
2008 MS 34 HT Trawler
"Bacchus"
Bacchus is offline   Reply With Quote
Old 08-02-2021, 08:51 PM   #13
Guru
 
Pete Meisinger's Avatar
 
City: Oconto, WI
Vessel Name: Best Alternative
Vessel Model: 36 Albin Aft Cabin
Join Date: Oct 2012
Posts: 2,139
Put a fresh battery in it, check the oil level and hit the starter.

It will probably start. Once it is running check for cooling water out the back end.

Depending on how much fuel is in the tanks, add a diesel conditioner or Seafoam and run the hell out of it.

pete
Pete Meisinger is offline   Reply With Quote
Old 08-02-2021, 08:57 PM   #14
Arc
Senior Member
 
City: Long island
Vessel Model: Eastern
Join Date: Aug 2018
Posts: 440
Bar over engine 2 times. Then start it.
Arc is offline   Reply With Quote
Old 08-02-2021, 10:43 PM   #15
Senior Member
 
gsholz's Avatar
 
City: Out and About
Vessel Model: Sold-GB 52 Europa, Queenship 59, Tolly 45
Join Date: Nov 2016
Posts: 428
That dry start will take years of life off the engine. If it is a high value engine, I'd pre-lube it. Apply oil pressure until you see oil at top of engine. Can be done with a 2 gallon garden sprayer at 20 psi. Use oil pressure sender location to access oil galleries. Short of that, I'd at least crank it over with fuel disabled until oil pressure shows.
gsholz is offline   Reply With Quote
Old 08-02-2021, 11:58 PM   #16
STB
Guru
 
City: .
Join Date: Aug 2016
Posts: 1,646
1. I'd turn it over once by hand. If you can't turn it, you've got more work to do to break it loose.

2. I'd look at, smell, and feel the fluids (coolant, oil, fuel). And, if they don't seem good, I'd change them and filters before starting. If the fuel seems bad, I'd start it from a 5 gallon bucket of fresh. Little is gained by running bad fluids. If in doubt, change them.

3. I'd check controls, especially for neutral, idle throttle, and most especially shutoff. I'd disconnect and operate from engine room, if needed.

4. I'd put a mechanical oil pressure gauge on and have an IR temp gauge nearby.

5. I would check seacocks, strainers, and water to the engine.

6. I'd check air filter and air intake


7. I'd check battery.

8. I'd check fuel valves, change fuel filtersc(need it or not) and prime, thereby verifying fuel to the engine

8. I'd try to start it, giving the starter long breaks between attempts. If you have glow plugs or a block heater they can't hurt.

9. If it runs, verify water flow, keep anneye onntemp and oil pressure. You can debug performance issues from there.

10. I wouldn't let it run long as 1st. Once 4unning, there is a lot to check over.
STB is offline   Reply With Quote
Old 08-03-2021, 01:16 AM   #17
Senior Member
 
City: Cairns
Join Date: Jul 2019
Posts: 322
Quote:
Originally Posted by gsholz View Post
That dry start will take years of life off the engine...
Or just start start it, blip the throttle repeatedly while oil pressure if still building, then just mash the throttle to see if the governor has stuck and enables over 8000 rpm.

Don't forget to video in landscape mode.

Never fails on YouTube. 👍
GoneDiving is offline   Reply With Quote
Old 08-03-2021, 04:56 AM   #18
Moderator Emeritus
 
ksanders's Avatar
 
City: SEWARD ALASKA
Vessel Name: LISAS WAY
Vessel Model: BAYLINER 4788
Join Date: Feb 2011
Posts: 5,143
As others have indicated i would just crank it over and see if it runs after checking the fluid levels.

If it does not run then I would then and only then start troubleshooting.
__________________
Kevin Sanders
Bayliner 4788
Seward, Alaska
ksanders is offline   Reply With Quote
Old 08-03-2021, 06:53 AM   #19
STB
Guru
 
City: .
Join Date: Aug 2016
Posts: 1,646
Quote:
Originally Posted by gsholz View Post
That dry start will take years of life off the engine. If it is a high value engine, I'd pre-lube it. Apply oil pressure until you see oil at top of engine. Can be done with a 2 gallon garden sprayer at 20 psi. Use oil pressure sender location to access oil galleries. Short of that, I'd at least crank it over with fuel disabled until oil pressure shows.
This isn't bad advice, either. I was figuring the priming would get the gullies full. But if the lumpvhad somehow lost its prime, this might fix that, too.
STB is offline   Reply With Quote
Old 08-03-2021, 08:15 AM   #20
Valued Technical Contributor
 
DavidM's Avatar
 
City: Litchfield, Ct
Join Date: Aug 2012
Posts: 6,006
I too hope Ski chimes in. I suspect his advice would be to bar it over first and prelube the oil system. Also be prepared for a run away as the fuel injection system can stick in place after sitting that long.

David
DavidM is online now   Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

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


» Trawler Port Captains
Port Captains are TF volunteers who can serve as local guides or assist with local arrangements and information. Search below to locate Port Captains near your destination. To learn more about this program read here: TF Port Captain Program





All times are GMT -5. The time now is 02:46 PM.


Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2021, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2006 - 2012