Fuel Injector Ke-Jetronic – R107 C124 A124 W124 S124 R129 W126 C126 W463

Description

Manual for replacing KE-Jetronic injectors – Read our manual and tips for a good result when replacing! 

Fuel Injector Ke-Jetronic – R107 C124 A124 W124 S124 R129 W126 C126 W463

Injectors for KE-Jetronic injection systems are an important part of the mechanical injection system. These injectors have a relatively simple technical design, but they do contain precision parts that wear out over time. Therefore, KE-Jetronic injectors are wear parts that must be replaced in time in vintage and classic cars.

Inside each injector is a small spring that ensures the injector opens and closes at the correct moment. Additionally, there is a small strainer inside designed to retain fine dirt. Because this strainer cannot be removed (without completely disassembling the injector) and because injectors cannot be cleaned against the flushing direction, these injectors are practically difficult to clean. Replacement is therefore usually the best and most reliable solution.

 Suitable for classic Mercedes models

• Mercedes-Benz R107 420 SL — M116 — from circa 10-1985
• Mercedes-Benz R107 500 SL — M117 — from model change (MOPF), circa 10-1985
• Mercedes-Benz R107 560 SL — M117
• Mercedes-Benz C124 300 CE-24 (124.051) — M104.980 — 162 kW / 220 HP — petrol — 09-1989 to 12-1992
• Mercedes-Benz A124 300 CE-24 (124.061) — M104.980 — 162 kW / 220 HP — petrol — 04-1992 to 06-1993
• Mercedes-Benz W124 300 E-24 (124.031) — M104.980 — 162 kW / 220 HP — petrol — 09-1988 to 08-1992
• Mercedes-Benz S124 300 TE-24 (124.091) — M104.980 — 162 kW / 220 HP — petrol — 09-1989 to 08-1992
• Mercedes-Benz R129 300 SL-24 (129.061) — M104.981 — 170 kW / 231 HP — petrol — 03-1989 to 07-1993
• Mercedes-Benz W126 420 SE / SEL (126.034 / 126.035) — M116.965 — 150–165 kW / 204–224 HP — petrol — 10-1985 to 06-1991
• Mercedes-Benz C126 420 SEC (126.046) — M116.965 — 150–170 kW / 204–231 HP — petrol — 09-1986 to 06-1991
• Mercedes-Benz W463 500 GE (463.228) — M117.965 — 177 kW / 241 hp — petrol — 09-1993 to 12-1994
• Mercedes-Benz W126 500 SE / SEL (126.036 / 126.037) — M117.965 — 164–195 kW / 223–265 HP — petrol — 09-1985 to 06-1991
• Mercedes-Benz C126 500 SEC (126.044) — M117.965 — 164–195 kW / 223–265 HP — petrol — 09/1985 to 06/1991
• Mercedes-Benz R129 500 SL (129.066) — M119.960 / M119.972 — 240 kW / 326 HP — petrol — 09-1989 to 08-1992
• Mercedes-Benz W126 560 SE / SEL (126.038 / 126.039) — M117.968 — 178–205 kW / 242–279 HP — petrol — 10-1985 to 06-1991
• Mercedes-Benz C126 560 SEC (126.045) — M117.968 — 178–205 kW / 242–279 HP — petrol — 10/1985 to 06/1991

What to look out for when replacing injectors 

1. Always work cleanly and carefully

• Prevent dirt or dust from entering the injection system.
• Never overtighten pipes.

2. Always check the fuel tank for rust or contamination first.

• Rust particles or dirt in the fuel tank can immediately damage the new injectors; this is not covered by the product warranty.
• Therefore, always check the tank and the fuel lines for contamination and damage first, and clean or replace if necessary.

3. Always replace the fuel/petrol filter

• New injectors must never be installed behind an old or clogged filter.
• A clean filter prevents immediate contamination of the new injectors.

4. Always replace injector sleeves and/or mounting rubbers

• Bad or old sleeves and seals cause false air, leading to poor engine performance.
• See also the article on fuel distributors for more explanation about false air.

5. Check for leaks after installation

• Start the engine and check all connections for fuel leaks.
• Ensure that pipes seal correctly and without problems.
• also check for false air leaks

New injectors can sometimes stick.

It sometimes happens that new injectors may stick slightly at first.

In practice, this problem usually resolves itself after short use.

Advice 

Our advice is to always test new injectors before installation. In our own Mercedes Classic Garage, we therefore always test the spray pattern of new injectors before installation.

Tip: For a small additional fee, we can pressure test the injectors for you before shipment, so you can be certain that they open and close correctly and have the correct flow rate.

Follow all prescribed procedures and have the work performed by a recognized specialist to ensure correct installation and, consequently, faultless operation of the high-quality replacement parts. Incorrect installation or minor contamination can immediately lead to malfunction of the injection system.

More information & videos

On our website, you will find extensive pages with explanations about injection systems and their components.

In addition, we have our own YouTube channel with clear instruction and explanation videos about K-, KA-, and KE-Jetronic systems. Ideal for additional background information or for better understanding the operation of the system.

Visit our website: stolkbalkbrug.nl