Bosch KE-jetronic - System Pressure Testing 

Great explanation, Thank you very much sir

Vacuum port is so the inner diaphragm can work without being in a sealed can, and the engine will drink the fuel if it ruptures rather than spray fuel around the engine bay.

good stuff, cant wait to refresh my audi from top to bottom this summer.

Chasing a hot start issue on 9a corrado . It’s like loosing fuel pressure when parked . Love to have your understanding of the system 🤣

Another great video Thank you.

Great video

Hi when are you posting the next video on these ? I have one on an rs turbo that fires up then cuts out so interested in learning more cheers

Do you think the vacuum on the fuel pressure regulator might have something to do with a reference for boosted applications ?

Hi guys, Love the video!!! Knew I saw this adjustment in a video a few months ago and in the first second seeing this tonight I knew this was it :) My question... When I undone the adjustment line the tiniest dribble of petrol came out, not even a thimble, is that a sign of a gonner or can it retain a minute amount? It's running at the high 6.4/6.5 and 6.8/6.9 with line open, Mercedes 420SE, Going to aim for the 5.9/6Bar, Going to find the allen for it tomorrow, my current set starts skipping sizes so not feeing a bite it must be one I don't have, maybe a 6mm, I'll update when I'm done :) The symptoms on this was a rich smell and a slightly pulsating engine with weaker than normal acceleration, no smoke but a slightly vapour rich exhaust (visible at night anyway), Have a few KE jet Mercs so getting to know them well, 1 in particular is educating me no end, only thing right with that one is its fuel pressure! :)

How is it going with the videos about the KE-Jet? Summer is on it's way and time for classic VAG-cars from the late 80's to mid 90's agan....;)

Hi when are you posting the next video on these ? I have one on an rs turbo that fires up then cuts out so interested in learning how they work

Hi mr Goose, i have a Ke jetronic on my audi 80 and it keeps searching for its revs at idles by about 400rpm up and down. Have vacuum tested and all good so mechanic thinks fueling. Any ideas? Thanks

I attempted to raise my residual pressure following the steps you outlined here. I was able to raise my residual to 2.8 bar. Disconnected my fuel pressure test kit, started my car let it warm up to operating temp ran great and started great idled great. But when I came back 30 or so minutes later i couldn’t get the car to start. Any idea what I messed up while adjusting the FPR?

Hello, i need desperately help with my Ke-jetronic. I have residual pressure ok but right after i turn off ignition pressure drops to zero. When i clamp return hose the pressure remains. Is the head leaking or where the is the leak?

Hey Mr Goose, your discount code doesn't work for emanuals online, I just want wiring diagram for a 1982 mk1 golf gti, I can't work out which haynes manual I need 😭

Hello Mr Goose, I Hope that you are doing well, I Tried to adjust the fuel pressure regulator on my 190e (had a pressure of 4.6 and tried to make it 5.3 as in specs) but now there is no fuel going to the injectors, also when i connect the barometer and run the fuel pump the pressure is steady around 5.6 but then i hear a click sound coming from the fuel pressure regulator and it goes down to 5.1 instantly after that, did i break it or is this normal? Also when i disconnect the return line while the pump is running i get huge amounts of fuel coming out of the regulator, are you talking about no leaks from the return line after the pump stops pumping or while its still pumping? Thank you very much

System pressure is adjustable by screwing in or out on the valve to achieve 6.2 bar, What if the diffrential pressure is not 5.8 bar? How do you adjust that to make it 5.8?

Does the KE jetronic have enough adjustment in fuel delivery to run a turbo on an NA engine, no more than .5 bar .

I don't understand the logic, the flow route, why open valve will make 6.2bar and close valve will make 5.8bar?

9A is KE-Motronic, not a big difference, but still

Hi when are you posting the next video on these ? I have one on an rs turbo that fires up then cuts out so interested in learning more cheers

Hello Sr I have a 1980 Porsche 924 turbo and after rebuilding the fuel distributor the rpm’s seem to be a lot higher did I do something wrong? And also it has a hot start problem any help would be appreciated thanks