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Mercedes Ke-Jetronic - Testing the EHA
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- čas přidán 12. 08. 2024
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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"
Even though I can't watch every video of yours, I like it when I see it. Thank you very much for your effort.Even though I can't watch every video of yours, I like it when I see it. Thank you very much for your effort.
Teşekkürler, Türkiye'den.
Thanks a lot from south of France !
Greetings from Serbia 🇷🇸 😀 😊
Greetings from Costa Rica.
Greetings from Serbia
Thank you for the information! Saludos desde Los Angeles!
Saludos desde Serbia
Hola amigo Mercedeando ando saludo cordial para todos!! Faltó el besote de la morenita❤
Holaaaaaaaa. Hehehehehee, ella te besara no te preocupes!🍀🍀🍀🖐🏻🖐🏻🖐🏻🍻🍻🍻
@@mercedeske jejeje jajaja ya no voy a poder dormir….
Thanks very much for your kind information which it takes my consideration.
Actually i would like to clear something about the EHA, as you told in your previous videos that the measurement of EHA under the top by caliber is 6.6mm and we can measure up to 6.8mm to get the best pressure of fuel distributor 0.4 bar.
I have measured the EHA up to. 6.8mm then test my car where my car is Mercedes W124 260E then found very very will acceleration , But this method has a negative impact on fuel consumptions.
So i get back the measurement to 6.6mm with smoothly acceleration.
What do you mean by 6.6mm and 6.8mm on the EHA?
@@shaazy You have to watch previous videos about EHA from the same youtuber
@@issamalmousa76 I had missed the one where he discussed 6.6mm. 😅 .. finally found it! Love this guy!
Hola buenas señor
Una pregunta, el marcador de gasolina no me funciona y por un tiempo quería montar un reloj universal
Me podrías decir cuáles son los cables que tengo que usar del flotador
I have a problem that I cannot solve right now. When I stop my 200e vehicle with LPG Autogas while the engine is hot, wait for 5-10 minutes and try to start it again, it starts very late when I start it with the fuel oil selected. Sometimes I have to step on the gas pedal. Additionally, when the vehicle starts, it makes a noise for the first 3-5 seconds and the idle speed is very low. It starts to return to normal within 10 seconds. What do you think is the problem? Where should I look?
Note: 4 injectors were replaced with new ones. The problem persists. I suspect the gasoline pressure regulator, but it is not possible to source it here. I replaced it with 2 off-the-shelf parts, but it didn't work. Sorry it's been a bit long.
Thanks from palestine
Thanks, Greetings from Serbia 🇷🇸
Que bueno sería en español para estar seguro de lo dice
can we repair an eha if it is leaking, not at the little rubbers but somewhere from under the black plastic?
You can just replace the o-ring under the adjustment screw, there is nothing else you can do. If you have a pressure loss, then you must replace the eha.
@@mercedeske :-( will try gasoline resistant plastic glue or few layers of strong paint with what the fuel tanks are painted inside :-)
@@Joccka Let us know if that works.
I have a problem that I cannot solve right now. When I stop my 200e vehicle with LPG Autogas while the engine is hot, wait for 5-10 minutes and try to start it again, it starts very late when I start it with the fuel oil selected. Sometimes I have to step on the gas pedal. Additionally, when the vehicle starts, it makes a noise for the first 3-5 seconds and the idle speed is very low. It starts to return to normal within 10 seconds. What do you think is the problem? Where should I look?
Note: 4 injectors were replaced with new ones. The problem persists. I suspect the gasoline pressure regulator, but it is not possible to source it here. I replaced it with 2 off-the-shelf parts, but it didn't work. Sorry it's been a bit long.
Have you replaced or tested the fuel accumulator?
@@mercedeske No. Not yet sir.