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#fixyourmercedes ##mechanicalpartKE##KEJetronic#

In this video I explain how it looks like diagnosing the mechanical part of the KE-Jetronic. The mechanical part is the most important and that's the basis for a good system operation. The sensors are just an improvement (upgrade) for more power. The most critical parts of the system are the INJECTORS, FUEL ACCUMULATOR, PRESSURE REGULATOR whereby the last two are as expensive as hell!!! From my experience in almost 100% of the cases I faced with the injectors were never replaced which creates a big ISSUE. If the car has been driven then the fuel distributor is not an issue unless you drive the car with ethanol containing fuel. The most important tool for the diagnosis and the onlt one is the pressure gauge, everything else is done using common tools. EHA can fail but only if someone has been mesing with the allen screw, without any "feeling" using force.
Watch the video and enjoy because what you will see and hear on this channel you won't on almost any other channel. Happy Mercedesing!

Timecode
0:00 Intro
0:08 - 0:51 Greetings for Nermin on Patreon
0:52 - 1:46 Thanks&Join
1:47 - 4:24 About the video&the mechanical components
4:25 - 7:18 VERY IMPORTANT
7:19 - 9:46 The importance of a pressure gauge
9:47 - 10:09 In case the car won't start
10:10 - 10:34 The residual pressure
10:35 - 10:45 About the check valve and its specs
10:46 - 11:56 A faulty fuel accumulator
11:57 - 15:57 Diagnosing the fuel pump&SYMPTOMS
15:58 - 17:08 Diagnosing the fuel accumulator&SYMPTOMS
17:09 - 18:06 Diagnosing the fuel pressure regulator&SYMPTOMS
18:07 - 18:59 Diagnosing the fuel filter&SYMPTOMS
19:00 - 26:16 Diagnosing the fuel distributor&SYMPTOMS
26:17 - 26:57 Diagnosing the injectors&SYMPTOMS
26:58 - 27:26 Diagnosing the airflow meter&SYMPTOMS
27:27 - 29:53 Diagnosing the rubber boot&SYMPTOMS
29:54 - 32:46 Diagnosing the EHA&SYMPTOMS
32:47 - 33:33 My girls and special people

What am I talking about?
My topic is the KE-Jetronic injection system which I try to demystify as much as I can.
For all of you to understand the system in brief - Developed in 1973 and being mounted into cars up to 1993 as it went in history. But why these to letters!?(KE) K(from German "kontinuierliche Einspritzung" meaning continuos injection, without interruption) the MECHANICAL injection system on which the fuel starts flowing from the fuel tank sucked by the FUEL PUMP and delivered to the FUEL DISTRIBUTOR which sends fuel to the INJECTORS while the majority of it flows through the FUEL PRESSURE REGULATOR through its return line back to the fuel tank again. The letter E(elektronische Gemischanpassung/electronically controlled mixture adaptation) has to mark the electronic sensors (the developement starting from early eighties) which had to inform the ECU about the current state of the engine so that the ECU(Electronic Control Unit) then could create current signal in mA(miliampers) and send it to four crucial components for the system - the EHA(the electro-hydraulic actuator, a unit consisting of a magnet, an electromagnet and a baffle plate) which had to fine tune the engine in each of its phases, the ICV(the idle control valve), the unit which was predicted for the engines perfect idle, the X11(the diagnostic socket) where the duty cycle(the ideal mixture) was adjusted and the X11/4(the code reader) - the socket which from any codes were read if present using an OBD1 scanner.
An extraordinary injection system which could be fully repaired in your own garage using a multimeter and a pressure gauge only for its fine tuning, together with some common tools.
"Happy Mercedesing"