Cruisers Forum
 


Join CruisersForum Today

Reply
 
Thread Tools Rate Thread Display Modes
Old 08-12-2015, 05:02   #1
Registered User

Join Date: May 2015
Posts: 4
Injection pump adjustment

I recently installed a remanufactured injection pump on my Perkins 4236 but discovered after installing the new pump that the scribe line on the timing case is absent . I cleaned the paint off the area with acetone but there's no evidence of a scribe line. The injectors are also new remanufactured units. There is a little black smoke . I would like to try shifting the pump in small increments to eliminate the smoke ; ie try to find where the scribe line should be. Could someone who knows about thes things please advise me how to go about doing this? Thanks, Oldgaffer
__________________

__________________
Oldgaffer is offline   Reply With Quote
Old 08-12-2015, 05:18   #2
Moderator Emeritus
 
GordMay's Avatar

Join Date: Mar 2003
Location: Thunder Bay, Ontario - 48-29N x 89-20W
Boat: (Cruiser Living On Dirt)
Posts: 31,579
Images: 240
Re: Injection pump adjustment

PerkinsTech Tip #124: How to Time a Perkins Engine | Foley Engines

Universal ➥ Universal Diesel Engine Owners Manual - Fuel Injection Timing - Marine Diesel Direct / TOAD Marine Supply
__________________

__________________
Gord May
"If you didn't have the time or money to do it right in the first place, when will you get the time/$ to fix it?"



GordMay is offline   Reply With Quote
Old 08-12-2015, 08:50   #3
Guy
Registered User

Join Date: Feb 2013
Location: So. Oregon, USA
Boat: Seafarer36c
Posts: 4,308
Re: Injection pump adjustment

It's pretty involved process. You might try just moving the pump a little bit one way or another and see it if that fixes things
__________________
Guy is offline   Reply With Quote
Old 08-12-2015, 09:27   #4
Registered User
 
leftbrainstuff's Avatar

Join Date: May 2011
Location: San Francisco and Australia
Boat: Liberty 458
Posts: 1,978
Re: Injection pump adjustment

Trial and error with diesel fuel systems is not good practice. It works fine with gasoline engines pre electronic ignition. I can easily set timing and gaps for anything old and tune it by ear. Not so with diesel.

You need to use a dial indicator on the valves to find TDC. You then need to either find or add the corresponding injection pump timing mark. Do it once and do it right. Is it really missing?

You can use a center punch to make the mark and label it in situ. Of course I'm assuming you have the right pump and the drive gear is correctly installed. There are two options from memory. I have a cav unit.

Sent from my SM-N900T using Cruisers Sailing Forum mobile app
__________________
leftbrainstuff is offline   Reply With Quote
Reply

Tags
men

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
Pump Sensor Adjustment Flying Knight Plumbing Systems and Fixtures 10 08-07-2014 06:47
Yanma 3QM30 Injection Pump User removable? svnakia Engines and Propulsion Systems 11 24-01-2008 13:59
4-108 injection pump CaptG Engines and Propulsion Systems 48 21-06-2007 17:25
Injection pump leak 4.108-help me saildale Engines and Propulsion Systems 3 16-10-2006 20:54
4108 injection pump question??? EagleSailTwo Engines and Propulsion Systems 12 24-09-2006 13:14



Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 22:16.


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.