Cruisers Forum
 


Join CruisersForum Today

Reply
 
Thread Tools Search this Thread Rate Thread Display Modes
Old 15-01-2019, 19:36   #1
Registered User

Join Date: Nov 2013
Posts: 177
White smoke after rebuilt of Perkins 4.108

Do I have to turn pump anti clockwise (facing the cylinder 1 - standing in front of engine while looking to it)to have the injection earlier?
If I change the setting for 2 mm will it be to much?


Engine has also problem to start. Actually to start I must use starting fluid.

I can remember that when I was checking IP settings something was strange to me. I am not sure, but I think pistons were on top position when mark "A" was in position. But as I marked a line with sharp object on pump pulley
before, I then kept that position. And it was equal to default Perkins marking dots.

Can you tell where can be the reason for this mismatch?
__________________

pr2501 is online now   Reply With Quote
Old 15-01-2019, 20:43   #2
rbk
Registered User

Join Date: Feb 2016
Location: Whitehorse, YT
Boat: Tayana 37
Posts: 752
Re: White smoke after rebuilt of Perkins 4.108

Have you removed the timing cover on the injection pump and check alignment?did you check valve tip clearances?
__________________

rbk is offline   Reply With Quote
Old 16-01-2019, 01:36   #3
Registered User

Join Date: Feb 2010
Posts: 44
Re: White smoke after rebuilt of Perkins 4.108

Quote:
Originally Posted by pr2501 View Post
Do I have to turn pump anti clockwise (facing the cylinder 1 - standing in front of engine while looking to it)to have the injection earlier?
If I change the setting for 2 mm will it be to much?


Engine has also problem to start. Actually to start I must use starting fluid.

I can remember that when I was checking IP settings something was strange to me. I am not sure, but I think pistons were on top position when mark "A" was in position. But as I marked a line with sharp object on pump pulley
before, I then kept that position. And it was equal to default Perkins marking dots.

Can you tell where can be the reason for this mismatch?

I've been following your adventure since the start and admire your tenacity as well as the knowledge and experience of the responders.
The white smoke and hard starting is possibly due to faulty injectors or pump timing issues. Avoid using starting fluid, find the problem ......Have the injectors been tested or rebuilt ?You previously mentioned the replacement of the broken hold down plate and that requires opening the injector, maybe something happened at that point. You also mentioned a problem with the injection pump having corrosion, was this repaired satisfactorily ?
Is it at all possible that two of the injector lines are crossed on the injector pump head ? The engine might run in this situation .... but very badly with clouds of white smoke and very difficult starting.
Dismiss this idea if the engine runs smoothly after starting.
Starting fluid is useful if the compression is very low or the ambient temperature is subzero but on a healthy engine in a warm climate .... (that's you) no. It's like crack cocaine..... once they get a taste they always want it.
Pete
skipperpete is offline   Reply With Quote
Old 16-01-2019, 07:51   #4
Registered User

Join Date: Nov 2013
Posts: 177
Re: White smoke after rebuilt of Perkins 4.108

Engine runs now. It starts without the problem and it does not smoke. I will check later when it will be cold again. And is not smoking.

https://www.instagram.com/p/BssuvlOnwT8/


https://www.instagram.com/p/Bssu_6OH0JO/

I did ad image how much I had to rotate the pump and the other how much was the mistake on camshaft pulley. I am sorry that I don't have the picture of pump pulley. I am curios how much is the mistake there.
Attached Thumbnails
Click image for larger version

Name:	set.jpg
Views:	124
Size:	301.3 KB
ID:	183920   Click image for larger version

Name:	set2.jpg
Views:	105
Size:	360.6 KB
ID:	183921  

pr2501 is online now   Reply With Quote
Old 16-01-2019, 09:15   #5
rbk
Registered User

Join Date: Feb 2016
Location: Whitehorse, YT
Boat: Tayana 37
Posts: 752
Re: White smoke after rebuilt of Perkins 4.108

If you take the small cover off just above the arrows on the inj pump, there are timing marks in there.
rbk is offline   Reply With Quote
Old 16-01-2019, 10:11   #6
Registered User

Join Date: Nov 2013
Location: Slidell, La.
Boat: Morgan Classic 33
Posts: 1,521
Re: White smoke after rebuilt of Perkins 4.108

If all the timing marks on the geartrain were aligned correctly, and the engine now starts easily from cold, revs smoothly up to about 5-10 percent over maximum high idle with no load, doesn't smoke, and makes good power, besides break-in, you're done. The small change in injection pump position shouldn't matter.
jimbunyard is offline   Reply With Quote
Old 16-01-2019, 10:30   #7
Registered User

Join Date: Apr 2012
Location: Cheshire, CT
Boat: Morgan OI Ketch 36'
Posts: 42
Send a message via Skype™ to Mazu
Re: White smoke after rebuilt of Perkins 4.108

I rebuilt my 4-107 and had white smoke for a few hours of operation. On a new rebuild this can be a normal occurrence....nothing is wrong with anything else. Give it a few hours of operation until the rings seat a bit and you will probably see it clear up. Never use starting fluid on these engines...if you absolutely need to use something, use WD-40. The 4-107/108 manuals have new engine and cold engine start procedures as well as break in instructions for new/rebuilt engine operation.
Mazu is offline   Reply With Quote
Old 16-01-2019, 10:57   #8
Registered User

Join Date: Feb 2010
Location: US
Boat: Sunward 48
Posts: 120
Re: White smoke after rebuilt of Perkins 4.108

When our head gasket blew, cooling water entered the oil and made a gel. We had to try to pump the gel out of the sump. We put in fresh oil three times but never got rid of all the white oil.
Finally the mechanic suggested running the engine underway at full load. An hour later the white smoke stopped and the oil was clear.
Locquatious is offline   Reply With Quote
Old 16-01-2019, 13:50   #9
Registered User

Join Date: Nov 2013
Posts: 177
Re: White smoke after rebuilt of Perkins 4.108

I have now cylinder 4 in overlap. But small change on manual rotation of crank shaft can give a different reading. That's why I have upload two images.

Jimbunyard and Rbk thank you .

I will do some test later and then more in the water tomorrow with higher speed of engine rotation. I am waiting now to have engine cold to check valves settings again as I did open the valve cover.

And is there some more accurate setting to reed the ignition position than valves overlapping?
Attached Thumbnails
Click image for larger version

Name:	1overlap.jpg
Views:	71
Size:	396.8 KB
ID:	183933   Click image for larger version

Name:	2over.jpg
Views:	64
Size:	429.2 KB
ID:	183934  

pr2501 is online now   Reply With Quote
Old 17-01-2019, 07:37   #10
TPF
Registered User

Join Date: Feb 2013
Location: Shoal Bay, NSW Australia
Boat: Fontaine Pajot Helia 44
Posts: 16
Re: White smoke after rebuilt of Perkins 4.108

I had my Perkins 4.108 rebuilt. It blew white smoke immediately. Fussing with the injectors and pump didnít work. It was the piston rings that had cracked during the rebuild or were faulty. Iíll never know! What I do know is the engine had to come out again and the rings replaced.
TPF is offline   Reply With Quote
Old 17-01-2019, 08:56   #11
Moderator
 
a64pilot's Avatar

Cruisers Forum Supporter

Join Date: Oct 2013
Location: Albany Ga.
Boat: Island Packet 38
Posts: 22,889
Re: White smoke after rebuilt of Perkins 4.108

Quote:
Originally Posted by TPF View Post
I had my Perkins 4.108 rebuilt. It blew white smoke immediately. Fussing with the injectors and pump didnít work. It was the piston rings that had cracked during the rebuild or were faulty. Iíll never know! What I do know is the engine had to come out again and the rings replaced.


Very likely that they were not gapped on installation and merely installed.
Many people just install and often get away with it, but you supposed to place the ring in the bore and take a piston and push it towards the top and measure the gap to ensure itís within specs, if not, you file it until it is. If itís too tight, then it will quickly expand on startup from the heat and break.
__________________

a64pilot is offline   Reply With Quote
Reply

Tags
perkins

Thread Tools Search this Thread
Search this Thread:

Advanced Search
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
Smoke, Smoke, Smoke that Cigarette ! bangkaboat Health, Safety & Related Gear 149 20-06-2013 23:41
Yanmar issues... white smoke and black oily soot (exhaust) and engine smoke CS27 Engines and Propulsion Systems 3 14-09-2008 18:40
White smoke and oily sheen on water from new rebuilt Yanmar 3JH2E Woody on "Hannah" Engines and Propulsion Systems 25 16-04-2007 20:07



Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 08:59.


Google+
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2019, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.