Bosch KE-jetronic - System Pressure Testing

Рет қаралды 2,039

6 ай бұрын

#car #music #kjetronic
Finally managed to make a start on the CIS-E or KE-jetronic series of videos, its taken a long time but these systems aren't as common as the older K-jetronic so its not often i have a unit in to rebuild and test.
System pressure should always be 0.4 bar higher than the differential pressure, thats the magic number you want
Residual pressure should be in the region of 2.6 bar after 10 minutes
We will investigate more with the inside truth video
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Пікірлер: 49

@JhnStill Ай бұрын

Great explanation, Thank you very much sir

@danielclare2344 2 ай бұрын

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

@GreyGooseRestorations 2 ай бұрын

Could be a number of things, fuel Accumulator failing or one or more of the seals in the metering head, or if KE then the external fuel pressure regulator

@jasonbirch1182 6 ай бұрын

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.

@GreyGooseRestorations 6 ай бұрын

That makes sense, thanks

@iwillbuycocainefromyou 6 ай бұрын

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

@danielclare2344 2 ай бұрын

Great video

@mcfly6667 6 ай бұрын

Another great video Thank you.

@GreyGooseRestorations 6 ай бұрын

Thanks for your support 👍

@user-gv2hj3jq1n 5 ай бұрын

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

@user-gv2hj3jq1n 5 ай бұрын

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

@Random-nf7qb 4 ай бұрын

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

@GreyGooseRestorations 4 ай бұрын

Correct but for pressure testing theres no difference

@wsmallridge 6 ай бұрын

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

@GreyGooseRestorations 6 ай бұрын

Potentially 🤔 i may have to cut one apart and see what's inside

@TruckerKingJM 3 ай бұрын

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....;)

@GreyGooseRestorations 3 ай бұрын

Close just need to put it all together

@TruckerKingJM 3 ай бұрын

@@GreyGooseRestorations Looking forward to that!👍

@rn-j7600 22 күн бұрын

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

@RudeLubeuk 5 ай бұрын

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 😭

@GreyGooseRestorations 5 ай бұрын

Ok ill see whats occurring

@arthurkabian9301 5 ай бұрын

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?

@GreyGooseRestorations 5 ай бұрын

If the differential pressure can't be made to have 0.4 bar less than the system by adjusting the fuel pressure regulator, then adjustments can be made to the DPR unit, theres another video coming out soon focusing on that alone

@arthurkabian9301 5 ай бұрын

Thank you

@adeloro6879 3 ай бұрын

@@GreyGooseRestorationswhat size hex key do you use to adjust the FPR?

@johnburketransport 2 ай бұрын

When adjusting the pressure regulator, I found that turning the Allen key screw inwards(clockwise), increases the pressure. That is the opposite to your statement.

@JhnStill Ай бұрын

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

@GreyGooseRestorations Ай бұрын

Hmm it may be that the pressure regulator is adjusted close to its limit so as soon as it gets to the point of opening it stays open like its stuck, you shouldn't be getting large amounts of fuel out. Prime the system then switch off and take off the return line off pressure regulator, it should be wet but not letting anything past

@JhnStill Ай бұрын

@@GreyGooseRestorations thank you so much for the information and explanation you provide, i will try it asap and get back with the verdict 😀

@JhnStill Ай бұрын

@@GreyGooseRestorations your diagnosis of the problem was on accurate, i reduced the system pressure in the pressure regulator and now i have fuel in the injectors, i think my pressure regulator needs to be replaced since it cant get the proper system pressure. Thank you very much for your help 🙏

@GreyGooseRestorations Ай бұрын

@JhnStill happy to help 👍

@forresttucker168 2 ай бұрын

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

@GreyGooseRestorations 2 ай бұрын

Yes it has enough capacity to fuel turbo 👍

@forresttucker168 2 ай бұрын

@@GreyGooseRestorations I assume these same techniques will work on a 1992 Mercedes 190E running KE-Jetronic system.

@GreyGooseRestorations 2 ай бұрын

@forresttucker168, in theory, yes once system pressure is set then its a balancing act to get the desired flow

@forresttucker168 2 ай бұрын

@GreyGooseRestorations so I need to invest in a fuel pressure gauge, a wideband oxygen sensor, and a water methanol injection kit.

@forresttucker168 2 ай бұрын

Is there a CIS specific fuel pressure tester I need to get, or will any one do?

@rudyperalta3147 4 ай бұрын

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

@GreyGooseRestorations 4 ай бұрын

As in the engine revs higher or the idle level is higher. Did it have the hot start issue before

@rudyperalta3147 4 ай бұрын

@@GreyGooseRestorations yes it did I would drive it somewhere and go do what ever and when I came back it would not start so then I rebuilt the fuel distributor it runs better but I don’t drive it somewhere where I’m going to take long because you know. It will start the next day

@GreyGooseRestorations 4 ай бұрын

@rudyperalta3147 that sounds like the fuel Accumulator that's not holding pressure potentially

@rudyperalta3147 4 ай бұрын

@@GreyGooseRestorations oh wow and I replaced that too the old one was leaking gas,maybe it’s faulty

@GreyGooseRestorations 4 ай бұрын

@rudyperalta3147 ok if its a bosch part chances are its somting else It could also be fuel pump check valve Or the main seal on thr pressure relief valve in the metering head or the CO mixture set to rich so once engine is switched off pressure is leaking away