Cruisers Forum

Join CruisersForum Today

Thread Tools Rate Thread Display Modes
Old 22-11-2011, 14:18   #1
Senior Cruiser

Cruisers Forum Supporter

Join Date: Mar 2006
Location: Nevada City. CA
Boat: Sceptre 41
Posts: 3,765
Images: 9
Rebuilding Injectors

Hi everyone. This is not marine related but it does have to do with diesel engines. I have a 1987 Mercedes 300TD. It has around 254k miles on it. I don't like throwing things away whether it is a car or money on a car that is beyond help. If the car had run at 60 MPH the engine would have ~4200 hours and if at 30 MPH ~8400. The engine has really been lacking in power lately. I purchased an injection tester and rebuild kit from Mercedes Source for a bit under $400 including shipping. I have a spare engine and took the injectors out of it and they were popping at about 1450 PSI and some were dripping fuel too. I cleaned the injectors and replaced the nozzles and balanced the injectors so that they all popped just below the factory setting at 1900 (factory is 1950 PSI). After installing the rebuilt injectors the car really improved its performance. Where I used to feel it would be a good idea to get out of the car and push going up a hill it now runs great. Not much smoke even when I jump on it going up a hill. I imagine that there will be an improvement in fuel mileage as well since less diesel will be injected into the cylinders. The reason I was thinking this might be appropriate to share with everyone here is because I was wondering how often injectors should be pop tested. It really wasn't very hard to rebuild the injectors as long as you have a vice, the correct size wrenches, a pop tester and the specs on the particular injectors on your engine. I could write up a report on how to rebuild the injectors but it was already done at this website - HOW-TO: Rebuild Diesel IDI Injectors I'd be more then happy to answer any questions that people might have. I am also going to pull the injectors on my tractor and on my Yanmar 4JH4E test them, balance them, and if needed rebuild them.
Fair Winds,


Between us there was, as I have already said somewhere, the bond of the sea. Besides holding our hearts together through long periods of separation, it had the effect of making us tolerant of each other's yarns -- and even convictions. Heart of Darkness
Joseph Conrad
Charlie is offline   Reply With Quote
Old 07-05-2016, 00:57   #2
Registered User
Warby12's Avatar

Join Date: Apr 2013
Location: East Coast, Australia
Boat: Wauquiez Amphitrite 43
Posts: 284
Re: Rebuilding Injectors

Hi Charlie, Thanks for taking the time to do this Researching this now

I know this is an old post but what the hey!
Warby12 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
Yanmar 3GM30 - No Fuel at Injectors 2 and 3 lateral Engines and Propulsion Systems 31 13-10-2011 20:49
Rebuilding Perkins 4.108 wbrown Construction, Maintenance & Refit 9 07-10-2011 14:36
Hatch Rebuilding / Renewal Company SV Liberty Construction, Maintenance & Refit 2 11-08-2011 14:15
Rebuilding Mast Step Area: Douglas Fir vs Marine Plywood arjand Construction, Maintenance & Refit 28 14-07-2011 15:06
Rebuilding Fridge / Freezer - Materials ? From Where ? CharlieCobra Construction, Maintenance & Refit 10 17-06-2009 19:14

Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 00:52.

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2018, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2018, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.