Cruisers Forum

Join CruisersForum Today

Thread Tools Rate Thread Display Modes
Old 29-01-2016, 12:01   #16
Registered User
Jesse's Avatar

Join Date: Apr 2008
Location: Oro Bay Puget Sound
Boat: Irwin sloop
Posts: 359
Re: Bukh DV20 Cold Start - Any Suggestions?

My DV20 was getting very hard to start and I was using the method described in post #12 because it wouldn't start any other way. When I replaced the battery cables to the starter the problem went away because the starter spun faster. High quality cables with good connections cured the hard starting problem. That was 17 years ago and with normal maintenance its still running fine.

Jesse is offline   Reply With Quote
Old 29-04-2016, 12:05   #17
Registered User

Join Date: Jan 2016
Location: Walton on the Naze. UK
Boat: Marcon Sabre 27
Posts: 3
Re: Bukh DV20 Cold Start - Any Suggestions?

Originally Posted by MrSwatchway View Post
We have had the same problem with our old, very worn (low compression) 1973 Bukh DV20 this uses a dynastarter for starting so has to use the decompresser on the start panel. Once started though, she will run all day long.

In the original 1973 owners manual it says to use a drop of oil in the inlet manifold to aid cold starting. So now before starting I found that if I remove the air cleaner and use no more than one squirt of engine oil from a oil can into each cylinder. I then decompress and crank by hand for about 10 revoloutions to spread the oil, while doing this you should hear both the injectors click (mine may need a few more than 10 revs to get both injectors working after few weeks without use) . I then use the starter and decompresser to to get up to speed then release the decompresser and away she goes. Do not use to much oil or you could cause an hydraulic lock and may damage the engine.

I have used this procedure over the past few months and she always starts after a couple of revs after the decompresser is relased and then starts normaly until really cold.

The coldest start here was at -1 deg C air temp.

There are cold start devices online in the UK but not cheap.

Hope this may help.
We have now overhauled the head after i found the head gasket had failed.

I still use a drop of oil in each cylinder inserted through the inlet manifold in cold weather.

I have hand started the DV20 in cold weather using this method, hard work though.

Link to the rebuild

MrSwatchway is offline   Reply With Quote


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
Bukh DV20 saildrive clutch SailorG Propellers & Drive Systems 2 04-11-2013 05:28
For Sale: BUKH DV10. DV20 n2banshee Classifieds Archive 3 28-05-2012 01:24
Want To Buy: bukh dv20 mikie Classifieds Archive 4 19-12-2011 13:20
Bukh DV20 - Water in Oil BobbyMck2 Engines and Propulsion Systems 8 18-05-2010 06:15
Bukh DV20 Flushing and Testing Dagvald Engines and Propulsion Systems 2 07-09-2009 10:44

Our Communities

Our communities encompass many different hobbies and interests, but each one is built on friendly, intelligent membership.

» More about our Communities

Automotive Communities

Our Automotive communities encompass many different makes and models. From U.S. domestics to European Saloons.

» More about our Automotive Communities

Marine Communities

Our Marine websites focus on Cruising and Sailing Vessels, including forums and the largest cruising Wiki project on the web today.

» More about our Marine Communities

Copyright 2002-2015 Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 20:47.

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2016, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2016, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.