Reply
 
Thread Tools Search this Thread
 
Old 03 March 2008, 04:42   #1
Member
 
Country: UK - N Ireland
Town: Newry
Boat name: Shannon Mist
Make: Shetland
Length: 10m +
Engine: Inboard Diesel
Join Date: Jan 2008
Posts: 9
White Smoke

Hi There Lads! Just bought a New boat recently. Lots of work carried out inc: Engine overhaul. Tons of receipts and photos of the work especially of the engine being stripped Bench tested and re-built. I was told by the previous owner that the engine dosent burn any oil and I believe him. He also told me at startup the engine gives off a lot of white smoke until it warms up which takes 10/15 minutes then the smoke disapears. It is a Ford 6 cylinder with turbo. I have started and run the thing but 10/15 minutes is a long time in a Marina with mountains of white smoke belching out and all other boat owners watching.. There seems to be a diesel smell and lots of oil residue on the water .....The previous told me he got the pump re-calibrated by Lansing Marine again Receipt but it made no difference.....Any bright sparks among yourselves out there can help I would definately appreciate........Nero
__________________

__________________
Nero is offline   Reply With Quote
Old 03 March 2008, 05:41   #2
Member
 
Country: UK - Scotland
Make: HumberOceanOffshore
Length: 8m +
Engine: Volvo KAD300/DPX
Join Date: Oct 2002
Posts: 4,962
Hi Nero, do you know of boatdiesel.com? It may be worth a rake around there.
__________________

__________________
JW.
jwalker is offline   Reply With Quote
Old 03 March 2008, 08:49   #3
Member
 
Country: UK - Wales
Town: Port Talbot
Boat name: Big Blue / Aurora
Make: Pac 22 Taskforce 810
Length: 6m +
Engine: 160Mermaid 250Sabre
MMSI: 235061166
Join Date: Sep 2004
Posts: 32
Nero,

Mine does exactly the same, its a 250hp Ford Sabre with less than 50 hrs since rebuild, I have had the injectors overhauled pump checked etc..
It doesnt use any oil but when it is cold the amount of smoke is unbelievable, it really turns heads!
As soon as you load it up though the smoke clears, from what I understand the white smoke is the diesel that has not completley burnt due to the bores being cold and also a low compression ratio.
I also get a bit of a sheen on the water.
If the smoke clears when it warms up under load and the pressures and temperatures are right then I dont think there is much wrong with it.
Lancing do make a de-smoke kit which makes the engine idle on 3 cylinders when in neutral but speaking with the guys at Mermaid they didnt like the idea so I didnt go down that road.
I just try not to fire it up when my neighbours are on their boats.
__________________
Leroy is offline   Reply With Quote
Old 03 March 2008, 09:40   #4
Member
 
Country: UK - England
Town: Southampton
Boat name: SMH Rib / War Shot
Make: Ribtec / Scorpion
Length: 4m +
Engine: 10hp Yam / 150hp opt
Join Date: Sep 2003
Posts: 1,894
RIBase
Old Fords all do it!

Due to the low compression ratio to allow plenty of boost they will smoke when cold.

Don't start up until you're ready to cast off.

Start up, untie and go!

Once you're in gear the little bit of load should reduce the smoke and also assist in warming up.

Heard a tale of an Owner of an old Fairey Spearfish who used to cast off before starting his engines they were so smoky!
__________________
Searider is offline   Reply With Quote
Old 03 March 2008, 10:33   #5
Member
 
Country: UK - Wales
Town: swansea
Boat name: Too Blue
Make: BLANK
Length: 8m +
Engine: Suzuki DT225
Join Date: Mar 2004
Posts: 12,791
A lot of older diesels do this - that's why I like petrol.............
__________________
codprawn is offline   Reply With Quote
Old 03 March 2008, 10:49   #6
Member
 
Country: UK - N Ireland
Town: Newry
Boat name: Shannon Mist
Make: Shetland
Length: 10m +
Engine: Inboard Diesel
Join Date: Jan 2008
Posts: 9
Thanks Lads! Much appreciated! I am going to have a Marine diesel chap look at it on Wednesday just to make sure that the pump timing is accurate. He has told me over the phone that he didnt hold out much hope as to a fix. He like your selves says that that type of engine is proned to smoke when cold....... Anyone got any other sugestions please post a thread. You all have Solomons Wisdom..... Nero
__________________
Nero is offline   Reply With Quote
Old 03 March 2008, 10:56   #7
Member
 
Country: UK - Scotland
Make: HumberOceanOffshore
Length: 8m +
Engine: Volvo KAD300/DPX
Join Date: Oct 2002
Posts: 4,962
Would keeping the heater plugs running for a wee while after starting not help burn the cold diesel?
__________________
JW.
jwalker is offline   Reply With Quote
Old 03 March 2008, 10:57   #8
Member
 
Pete7's Avatar
 
Country: UK - England
Town: Gosport
Boat name: April Lass
Make: Moody 31
Length: 9m +
Join Date: Aug 2001
Posts: 4,850
If its white smoke there is no fix, don't worry about it. Duncan is right it's quite bad on start up but quickly goes when you open her up. Old Spice also did it, and it's more noticeable during the winter months with cool air temperatures. Why? well I think the white smoke is caused by the exhaust gases causing steam in the cold wet exhausts were the raw water cooling mixes with the hot exhaust gas. This is added to by grey smoke which Fords also seem to suffer with, but quickly clear once the engine is hot and under load. Good news is that the engine is purely mechanical and simple to work on or fix.

Jeff, the heater plugs is a single plug on the inlet manifold rather than one per cylinder and on Old Spice was disconnected. Never needed it even with ice on the deck. What is does like when its really cold is the engine cover open and the sun to shine on the engine for 10 minutes. Allows the cold air around the engine to warm up and away she goes.

Pete
__________________
.
Ribnet is best viewed on a computer of some sort
Pete7 is offline   Reply With Quote
Old 03 March 2008, 12:11   #9
Member
 
Country: USA
Town: Seattle
Boat name: Water Dog
Make: Polaris
Length: 4m +
Engine: Yamaha 60hp
Join Date: Apr 2007
Posts: 1,152
White smoke is typically steam or water vapor. Black or dark gray would be unburnt diesel. I don't know your particluar engine but cold with no load on it I really doubt its unburnt fuel.
__________________
captnjack is offline   Reply With Quote
Old 03 March 2008, 12:50   #10
Member
 
Country: Germany
Town: Stuttgart
Boat name: Boat
Make: Avon,Scorpio,535 She
Length: 5m +
Engine: Yam 75HP,Johnson 70
Join Date: Jan 2008
Posts: 133
Hi there, white smoke from a diesel engine is a sign of low compression.
The unburned diesel gets out as white steam. Elder tubos have a low mechanical compression to be steady on turbo power.
The solution will be to adjust the cold start a little more lean.
In the diesel pump , there is a thermostat for the warm up phase to give a higher and stable idle. But in marine engines for leisure use, the is no need for
cold start with -20 degrees.

Greetings from Germany
Mike
__________________

__________________
mike-stgt is offline   Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search

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 -5. The time now is 03:20.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.