Mercedes KE-Jetronic - Understanding vacuum leaks and about the stoichiometric ratio (description)

Mercedes KE-Jetronic - Understanding vacuum leaks and about the stoichiometric ratio (description) #viralvideo About the vacuum leaks, whether they appear on one exact spot and how to know where. It comes to these leaks as soon as the rubber parts on your car get stiff, loose, broken or cracked. That moment the soichiometric ratio, the ideal combustion ratio when λ=1 (lambda) (14.7:1 - 14.7 tones of air must me mixed up with 1kg of fuel(10k liters(2641.7 gallons) of air with 1liter(0.26 gallons) of gasoline) at 20 degrees C, 68 degrees F, and at the air moisture of 1013mbar) is disrupted. The ECU has these parameters and it tries to maintain them in each of the phases while the engine is on. As soon as additional air is being sucked up into the engine, the ECU adds an additional amount of gasoline, in this case unneeded. The end result - high idle as well as higher fuel consumption. In order to prevent this from happening replace all rubber hoses and injector holders and then do the smoke test in order for you to see if you have any vacuum leaks. This is something individual because not every rubber is cracked or broken on the same place so no one can point the finger and tell that you have vacuum leaks HERE or THERE if you have any! Instagram:   / fix_your_mercedes   Patreon:   / fixyourmercedes   TikTok:   / mercedeskeje   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 "kontinuierlich" meaning continuos, 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(electronic) 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 mAmp(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"