Mercedes K-Jetronic - Fixing the throttle linkage on Mercedes R107
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- Опубліковано 7 вер 2024
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#fixyourmercedes##mercedeskejetronic##fixingthrottlelinkage#
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"
Good job!!😊
Thanks a lot!
Hi Ivica, my G300 after warming up and driving around, when at traffic lights i put from D to N the rpm goes up at 1100. Then, i press the pedal a bit and release, the rpm down to 750. And its always like that when i put from Drive to neutral. I have check all of the throttle link and clean them with wd-40. The mechanism is good, but the idle always stuck at 1100. have you ever get a problem like me? Thanks
hey i just fix it by adding an additional spring into the throttle linkage. happy mercedising!
I'm glad you made it! Happy Mercedesing!
hello I'm desperate I have a w124 300ce of 1991, it only starts with the eha plug disconnected, as soon as I plug it back in it cuts off, the eha is new.
Hello. You must measure the difference in pressures with the pressure gauge. It has to be 0.4bar.
@@mercedeske I don't have the tools to measure, it's as if the eha blocked the gasoline I have videos if you want to see the symptoms ua-cam.com/video/Y58xOFOoxfI/v-deo.htmlsi=uo3PhmC67vDhU7aa
ua-cam.com/video/HLkfLCr68bE/v-deo.htmlsi=T6sgDpVeMZfDRwtm
ua-cam.com/video/Ri-2tXm86QQ/v-deo.htmlsi=u0flHLUPfaIp7YsV
ua-cam.com/users/shortsbq0W2T6_QpI?si=guiA3rFD3jVNhpht
ua-cam.com/users/shortsLETXkpKrB60?si=T6IZBB1JoD3heSgd
I saw the videos. You can take a multimeter and measure miliamps. For this purpose you need clip leads and to connect them to your multimeter. I have a video on this. If you have bought a new EHA it doesn't mean that the EHA comes calibrated for your car, so you should know that. Remove the protection screw and calibrate the EHA so you measure 6.6mm from top to the 2mm allen screw. Under these conditions your car should run with the EHA connected. Afterwards you will have to set the mixture so that you have fluctuation between -3 and 0mAmps once the engine is at the operating temperature.
@@mercedeske thank you very much, I have already measured the milliamperes I have 19.90 with the ignition on and it comes back directly to 0.
ok I will do the EHA adjustment as you told me. I'm going to equip myself with a caliper like in one of your videos.
@@E30lover02 Yes, I saw it. But, you must have a STEADY READING on the ignition ON, not a fluctuating one like in your case.