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OM616 and OM617 Diesel Engine HIGH Pressure Injection Pump Timing Kit

Comes with HOUR LONG VIDEO instructions. Requires pressure tank for accurate and consistent results.

Kent's procedure uses the factory recommended "drip tube method" but with a "twist." He has devised a way to get accurate and consistant IP timing results while trying to get the drip tube to drip at one drip per second exactly when it should!

On Demand Video

60x Diesel Engine Fuel Warmer Bypass Instructions - On Demand Video

For 1984 to 1995 OM601 OM602 and OM603 engines in W201, W124, W126 and W140 Chassis

Mercedes installed small fuel warmers on these engines using engine coolant to warm up the fuel just before it enters the injection pump. The idea is great - especially in cold climates, but in moderate and warmer climates it is probably not needed.


Diesel Fuel Injector Return Fuel Hose AND Brake Pad Service Tool

Easy way to remove and reinstall that hard to reach small injector fuel return hose and vacuum hose - AND works on brake pads too!!!

While working on the fuel injectors of a 240D this week, Kent finally decided he had had enough. After 20 years of fighting those fuel injector return hoses he decided he just had to come up with a tool to make the job easier. 2 hours later the tool was designed and the prototype made.


Early 4 and 5 Cylinder Diesel Fuel Injector Hose and Injector Washer Kit

For fuel injector service on 220D 240D 300D 300CD 300TD and 300SD 1970 to 1985

Any time you are removing and replacing your fuel injectors you will need to change the return hose and the heat shield crush washers. If you don’t, you will have leaking hoses and possible compression leaks at the injector nozzles.

On Demand Video
Mercedes Short Fuel Pump Instructions - On Demand Video

1963 to 1973 Short MFI Electrical Fuel Pump Lower Section Resealing Instructions - On Demand Video

Be sure your Mercedes has the "short" style fuel pump. Not all models in those years had one (see description)

MFI (mechanical fuel injection) fuel pumps are notorious for leaking fuel. Leaks are almost always due to age hardened and deformed o-rings inside the pump. Taking the pump off the car, taking it apart, cleaning it and installing new seals will almost always solve the fuel leak problems.


1960'S Through Mid 1970's Fuel Tank Filter Screen Removal Tool

For W110 W111 W112 W113 W108 W109 W114 and W115 chassis as well as W123 station wagon only

Most owners do not have a big enough hex wrench to remove the fuel tank screen on those models that had the fuel tank right under the rear trunk floor. But the screen does need to be removed, inspected and cleaned due to the age of these cars.

On Demand Video

MFI Fuel Injector Tester: Assembly, Testing and Cleaning Operations - On demand Video

A video instruction manual explaining in detail how our special tester kit works

Would you like to find out how well your old (1959 to 1972) mechancial gasoline fuel injectors are working? Now you can do it yourself at home with our custom bench mount hand pump pressure tester and cleaning kit. These are the full instructions that come FREE with the kit.

On Demand Video
Mercedes 115 Fuel System Service Video Manual - On Demand Video

W115 Diesel Engine Major Fuel Service - On Demand Video

Covers fuel system service and repair on the 1969 to 1976 220D 240D and 300D only

Kent uses his 1976 240D that had sat idle for 6 years to demonstrate what needs to be done to get an old fuel system cleaned out and serviced properly. This always includes installing new fuel filters and sometimes will require replacing some of the rubber hoses.

On Demand Video
Mercedes Overvoltage Relay - On Demand Video

Solving Rough Idle and Low RPM at startup on a 1986 to 1993 CIS Engine - On Demand Video

Sometimes this can be fixed for very little work and money - but other times NOT..:-)

This is a common occurrence as these gas engines with Bosch C.I.S. fuel injection age. Most of them are now at least 20 + years old. The problem goes something like this. You start the engine cold and it will hardly run. It runs rough and idles very low and will even quit a few times.

On Demand Video

CIS Gas Fuel Injector Removal, Cleaning and Testing - On Demand Video Manual

How to know for sure how well your gas fuel injectors are performing (1976 to 1993 CIS ONLY)

If you think CIS fuel injectors can just be ignored, think again. Sure, your gas engine will continue to start and run “ok”, but you may find that it is not producing the power it once did nor the fuel mileage it once delivered.


CIS Gas Fuel Injector Spray Pattern Tester and Nozzle Cleaner

NEW VERSION 3 release.. See application notes below:

Works on all models from 1977 to 1993 with the Bosch C.I.S Fuel Injection system - see models listed below: Now you can do it yourself on the bench with this inexpensive tester- Save big $$.  Ever wonder how well your old CIS fuel injectors are working?

On Demand Video
Bleeding a Mercedes Diesel - On Demand Video

Bleeding the Air Out of a Diesel Engine Fuel System - On Demand Video

Needed when changing filters, injectors, fuel lines or heaven forbid - running out of fuel

If you are new to older Mercedes diesels and have not worked on them before, this is one of the first things you want to learn. Especially if you ever run out of fuel. Without knowing how to do this you will never get the engine started again!


Diesel Fuel Injector Balance Pressure Tester - Yes, You Can Do It Yourself!

Version 3 release - Improved fluid handling design - Watch the video below for reasons behind the changes.

For all MBZ diesel engines 1950 to 1999. Designed by Kent Bergsma. These are built at Mercedessource to control quality and production demands. Each one is tested here in our shop before shipping.


116 123 126 Chassis Fuel Tank Outlet Screen Removal Socket

WORKS ON FUEL TANK SENDING UNITS TOO! Machined short for easier access and a sharper edge for better grip.

FITS all 116 123 Diesel and Gasoline,  and 126 chassis from 1977 to 1985. Finally a socket to remove your fuel tank screen that really works. Most correct size sockets tend to be SO BIG that they require 3/4 inch drive ratchets and extensions to use them. Who has those in their tool box??


1981 to 1985 380 and 500 V8 Complete Fuel Delivery Overhaul Kit with Free Video Instructions

Deluxe Kit for U.S. Models: 380SL, 380SLC, 380SEL, 380SEC, 500SL, 500SEL, and 500SEC. The fuel Accumulator and filter outlet hose are included. Save $48 buying the bundle.

This deluxe kit includes three products related to the rear-end fuel delivery system for the models mentioned. This is critical if you want to get one of these old V8 engines running properly, especially if it has not been running for a long time.


1976 to 1993 CIS Fuel Injection Trouble Shooting Guide

3 Steps to begin getting your old fuel-injected engine running properly, especially after long periods of storage.


Kent shares with you 3 key steps that you should consider doing to get your old fuel injected 6 and 8 cylinder engines running properly. These include:

On Demand Video

How to Clean and Flow Test Your Old Gas or Diesel Injection Pump - On Demand Video

For old 1950 to 1985 Fuel Injected engines that have sat around and not run for years!

In this 9-minute instructional video, Kent explains how to set up his injection pump cleaning and testing kit ( available separately ), and use it to clean out old fuel injection pumps of gum and grime, and then how to test them to make sure they are delivery fuel through every line. 


5/16" or 8 mm Fuel Hose Smooth Clamp Set of 16

Rounded edges keep from cutting hose. Best clamp to use for high pressure ( ie. D-Jetronic or other fuel injection )

Excellent quality zinc plated hose clamps as shown. These can be tighten with a straight blade screw driver or a 7mm socket or nut driver. 

On Demand Video

Bosch CIS Training Series 6: Finding Follow-up Information to Help Interpret Test Results

For 1976 to 1993 Mercedes with gasoline fuel injected 4, 6, and 8-cylinder engines

After completing the pressure test on your CIS engine, you discover a problem. But how can you find out how to isolate and fix it? This is going to require some research on your part. Start by learning how the system works and how each component plays a part.

On Demand Video

Bosch CIS Training Series 5: How to Hook Up and Test KE-Jetronic Fuel Pressure

For 1976 to 1993 Mercedes with gasoline fuel injected 4, 6, and 8-cylinder engines

In this video, you will see how the gauges are hooked up to a 560SL and how the pressures are read.  The length of this 30-minute shows the detail Kent has put into filming all the critical components of doing a KE-Jetronic fuel system pressure test.

On Demand Video

Bosch CIS Training Series 4: How to Hook Up and Test K-Jetronic Fuel Pressure

For 1976 to 1993 Mercedes with gasoline fuel injected 4, 6, and 8-cylinder engines

This video is specific to K- jetronic fuel-injected engines from 1976 to 1985. This includes the 350, 450, and 280 engines in the R107, W116, W123, and early W126 gas Mercedes. In this 29-minute video. Kent will show you how to hook up the gauge, run the fuel pumps, and complete the test.

On Demand Video

Bosch CIS Training Series 3: How to Do Preliminary Fuel Flow and FD Leak Tests

For 1976 to 1993 Mercedes with gasoline fuel injected 4, 6, and 8-cylinder engines

There are a few factory recommend procedures and tests you should do before you do an actual pressure test on a CIS fuel-injected engine. In this 20-minute training video, Kent will walk you through these procedures step-by-step.

On Demand Video

Bosch CIS Training Series 2: Options to Get Fuel Pumps to Run with Engine Off

For 1976 to 1993 Mercedes with gasoline fuel injected 4, 6, and 8-cylinder engines

To do proper system testing on CIS fuel injection, you must find a way to get the fuel pump or fuel pumps to run continuously without the engine running. This can not be done by just using the ignition key. In this 15-minute training video, Kent will show the options available to do this.

On Demand Video

Bosch CIS Training Series 1: What’s Needed to Test K-Jet and KE-Jet Fuel Pressure

For 1976 to 1993 Mercedes with gasoline fuel injected 4, 6, and 8-cylinder engines

This video will help you decide if you want to try to do a fuel pressure test yourself. It is a fairly simple DIY job but will all the confusion and misinformation on the internet; one would believe it is a complicated process that is hard to understand.


D-Jetronic Fuel Pump Protection Filter Inslallation Kit

For 1970 to 1973 W111 W108 W109 Coupes and Sedans and 1972 to 1975 R107 350SL and 450SL

Let's face it. These fuel tanks and now 50 years old and most are not squeaky clean inside. There is a fuel tank screen that will catch most particles if the screen is in good shape. But I have found that it will not catch the very fine rust particulates that are so common in these old cars.


Bosch CIS Fuel Injection Pressure Tester w/ Extras

Limited Availability. For fuel flow and fuel pressure testing on Bosch K-jetronic and KE-jetronic 6 and 8-cylinder CIS-injected engines from 1976 to 1991. Full six part video series included.

If you own or are restoring a CIS fuel-injected Mercedes, a pressure tester is a must-have! This complete kit will allow you to do it yourself with complete instructions. Why buy a tester that you do not know how to hook up and may not even be accurate?

On Demand Video

1970 to 1975 D-Jetronic Fuel Pressure Regulators: How They Work / How to Test - On Demand Video

There is a little mystery around these. I will open them up and show you how they work and what they really do.

People call these two units pressure regulators, but really only one of them is. In this xx minute video, Kent will explain how these are different, what each one does, how to adjust them, and how to test them with a hand pump vacuum tester. 

On Demand Video

How to Depressurize a D-Jetronic V8 Fuel Injection Rail - On Demand Video

This you MUST do before unhooking any hoses on your 1970 to 1975 D-jet engine or I guarantee you will get sprayed with fuel in your face!

In this 8-minute video, Kent will show you how to quickly depressurize your D-Jetronic fuel system before doing any injector service, replacing any hoses, or hooking up our fuel pressure tester.


1970 to 1976 D-Jetronic Fuel System Depressurization Kit

Forget fuel pump relay, forget fuel pump fuse, forget getting under back of the car to disconnect the fuel pump. No engine cranking. No flooding cylinders with fuel. Easy 5-minute process with no spillage

This kit will put a smile on your face, especially if you have done it before the "old way." Watch the video below for full instructions on how to use this kit to do the fastest fuel system depressurization in the world!


1972 to 1973 4.5 450 D-Jetronic New Replacement Fuel Injector Set with Extras

Bonus new seals and new upper clamps included with the injectors. Kent's on-demand video on D-jet fuel injector service is included free of charge.

These will also fit the 1972 U.S. version 350SL with the 4.5 engine. Just make sure of the correct color. WARNING: MAKE CERTAIN your current injectors are blue/green at the top. A restocking fee will apply if you place an order in error. These are for the 4.5 engine only.


Fuel Hose Special External Coil Wire to Prevent Kinking and Chaffing

Can be cut to 4 to 5 smaller lengths and stretched for various applications on 7mm, 7.5mm and some 8mm internal diameter fuel hose.

This can do amazing things for your new fuel hose installaton on your old Benz engine. Watch the video to learn more. Sold individually in approximately 6 inch lengths.


1970 to 1975 D-Jetronic Fuel Injector Hold Down Bolts and Washers.

New zinc plated bolts to match the original color of most Mercedes D-jet engines. See video below

Set of 8 correct size bolts and washers to spruce up the engine compartment of your D-jetronic V8 engine. Watch the videos to see how these actually look installed. 

Currently out of stock.

1970 to 1975 D-Jetronic V8 Engine compartment Fuel Hose Replacement Kit

Full kit. Includes enough hose and clamps to replace all 8 rubber supply fuel hoses. DOES not include the 8 short hoses and clamps for the fuel injectors. See related below.

These engine supply fuel hoses are critical to the well-being of your engine. I have seen too many rotten and deteriorating hoses on these D-Jet engines that could easily lead to an engine fire, and they just do not get replaced when they should.

On Demand Video

1970 to 1975 D-Jetronic Fuel Injection Repair / Service Instructions - On Demand Video

A commonly neglected service that can lead to poor running and possible engine fire. It is the rubber parts that fail! See video below to believe it!

In this 36-minute instructional video, Kent will walk you through the process of doing a complete fuel hose replacement and fuel injector service on a 1970 to 1975 Mercedes V8 engine with Bosch EFI electronic fuel injection.


1977 to 1983 280E 280CE 280TE 280SE 280SL Fuel Injector Seal Replacement Kit

Seals only as shown. Complete kit with injectors available below:

If you are removing and replacing your M110 fuel injectors these are the seals you should have on hand. Always replace the rubber seals. I know it is possible to reuse the plastic sleeves but many times they are brittle and will be damaged upon removal.

On Demand Video

How to Test Your Fuel Accumulator - ON DEMAND VIDEO

Has your rear-mounted fuel accumulator failed on your 1976 to 1993 K-Jetronic or KE-Jetronic fuel system

In this 9 minute instructional video, Kent will explain how to test your fuel accumulator to determine whether or not it has failed internally. A failed accumulator will make your engine hard to start when hot.