I thoroughly enjoyed your video and its detail was quite impressive. I am currently having a problem with my 1987 R107 fuel distributor and this video has given me the courage to attempt the rebuild myself.
Brilliant presentation. Thanks from across the warming pond. Been to CIS school many years ago so this hands on display brings back to mind the operating principles. Non of this would be necessary is owners would just fill tanks before storing and add a fuel preservative. Thanks again.
That "o-ring" that was installed in the bottom of the barrel onto the round slotted nut was actually a piston rest position seal. The nut depth should have been precisely measured and the round slotted nut marked in it's precise position before being removed. This nut sets the exact plunger rest position. The seal prevents the small amount of fuel that seeps past the plunger in the barrel from entering the intake manifold, causing a rich start condition.
David i have the correct guide pins set for re-installing the two halves back together in exact alignment and an ultrasonic cleaner you could have borrowed from me for this video - haha but did not realise you were going to tackle this for a video clip. German engineering +30yrs ago with such fine tolerances is pretty impressive to say the least
joseph o'dea what the heck. Do you mean it is dumping so much fuel into the cylinders is getting into the sump? Something has gone VERY wrong. You might be better off getting an exchange unit.
@@MMWA-DAVE Tbh, i gave in chasing a non start situation. My local bosch dealer diagnosed it and i rebuilt the distributor, they re fitted it and the car still didnt start so they said it was the ezl. i took the car back still not running and found fuel in the oil, about 1.5 ltres. Please can you tell me , is there an o ring on the outside, on the base, close to the shim? Thanks for your replies and your videos
joseph o'dea Theres a large o ring that sits between the bottom of the fuel distributor and the air flow meter housing. If the ezl is blown you will have no ignition - it is important not to just test an ezl ignition car by watching for a spark from a disconnected lead to the block etc it must always have a spark plug connected as this alone can and does destroy them too.
thank you for the exceptional video ! again ) quick question, for how long did you leave the parts in acetone ? did you clean the plastic dishes too ? Im worried about dropping those in acetone tbh
Was there a specific problem you were trying to solve by rebuilding this, or are you just staying in keeping with the rest of the rebuild? Either way, hats off to you for getting stuck in and not treating it like its the shroud of Turin!
Matt Teee mainly because i know the whole fuel system on this cars been contaminated by the utterly terrible fuel tank that was in the car when i got it. The fuel was putrid. It definitely needed the clean out at the very least as it was all sticky and yellow brown inside so why not throw a modern diaphragm in there while its open 😄
At 11:52, does the notch on the barrel line up with the other notch on the rim of the hole that the barrel inserts through? Looks like that if those two notches line up, then that tiny circular hole in the barrel, just above the black o-ring, would line up with the hole within the interior of the channel that the barrel slides through? However, then, when I position it thusly, the slitted channels of the barrel don't line up with the corresponding holes for each cylinder. I'm re-attempting my rebuild today, since I know now that I made a few mistakes. Looking over the whole assembly, I see that the slitted holes will line up properly if that notch in the barrel does indeed point to that region as you've specified. Also, on mine, looks like that the other notch on the rim is in a different place.
tony66au it blew up back when i was homeless living in a crackhouse cleaning my 6.9 parts obsessively. Yes homeless and a 6.9 owner. Not usually something that goes hand in hand.
I don’t fully disassemble the adjustment screws and i put everything back exactly where it was so I don’t mess up the factory calibration. For the best job I would send it off to k-jet specialists as he has the correct bosch calibration equipment.
@@bevanwood6938 it will be pretty similar but early version also has pressure regulator integrated into distributor too from memory, so its more complicated with more parts
with early version id aslo be rebuilding warm up regulator too by the way. ideally the pair should be rebuild by someone who can calibrate them as a set for best performance. warmup reg also does acceleration enrichment etc, its not only for warmup phase its used at all times
@@MMWA-DAVE oh no. Hopefully I can do it. I’m in WA and I one would touch it except the guy from QLD. I was told from service people it’s over fuelling on cylinder 4 and it’s actually never run right since I’ve had it. Was stored for along time.
You never know what can show up on Ytube. Wow, I'm a bit of a Benz nut, ... You are over thinking this. ... Take it apart, notes , pics. Clean and organization. Its not hard. The W124 is a great car. my 1991 300E 6 cyl. 3 litre, just keeps on running. Change all the fluids, everything, often, two oil and filter changes a year. Syn. Mobil One. Front pads every two years, they are not expensive. Even with 50 percent left, change them. Maybe you had a Idle issue, floating up and down or stalling. Too Low. Idle. ? ... It's vapor lock. I experience this on occasion. A Hot start after the car is parked for ten to twenty minutes, on a warm day. It can hit 38.C - 48.C here in Adelaide South Australia in the summer. I wired a switch, located it beside the console to turn on the fans, with the A.C. off. Great in Traffic, If left in the On position, they will run for about 15 minutes, after parking, car locked and blows the heat away. Remove the mechanical fan completely. Over 70 - 80 k.m you do not need any fan at all.
I have an Audi 100 with 2.3e AAR engine using a Bosch KE-Jetronic fuel system. Planning to do the same. Where did you purchase the rebuild kit exactly?
Loving your superb videos. Rebuilt mine yesterday and had a disaster, snapped one of the plastics discs. I don’t suppose you know of any supplier (anywhere in the world!) that sells them? Thanks
Kevin Green just find another fuel distributor off a junk car and start again is what I would do. Just be very careful when closing to prevent this happening again.
MMWA thanks. That is looking like the only option. But at £350+ for a second hand one, looks like I’ve had a very expensive accident!! Seems crazy the parts aren’t available. Found a few firms that offer refurbished units so they must have access to the parts. Was also thinking about getting one scanned and 3D printed.
Kevin Green as far as im aware they just scrap other units for spares. Im not aware of anyone making the individual parts other than whats in the rebuilding kit. I beleive bosch themselves have even stopped rebuilding fuel distributors and stopped making them new a long time ago.
you can find this man on the internet, he has a website, the business name is K-Jet Specialists his name is Colin Dunken and he is in Queensland Australia
Where can i get the rebuild kit and how can i know which one i need ? My distributor has the number (0438 101 012) on it Im rebuilding an 1986 300e w124 here in chile
Tanks, from Malaysia, I have 2 units (W124 & W126 ) very well enplaned on fuel distributor , where can i purchase to service kit for 6 cylinder distributor, Can someone advice me . Thank in advance
Excellent video. Packed with great info! High quality filming also. Based on this... I am going to attempt it myself.
I am falling in love with German engineering and especially Mercedes classics. Great job. Thanks
Welcome to the party
I thoroughly enjoyed your video and its detail was quite impressive. I am currently having a problem with my 1987 R107 fuel distributor and this video has given me the courage to attempt the rebuild myself.
How did you get on?
I'm considering doing mine soon.
Brave and instructive, and guess what, that's what we want!
Great and Eloquent presentation. Thanks.
Greetings from USA 🇺🇸
Brilliant presentation. Thanks from across the warming pond. Been to CIS school many years ago so this hands on display brings back to mind the operating principles. Non of this would be necessary is owners would just fill tanks before storing and add a fuel preservative. Thanks again.
Love your work as usal MM. Spent the weekend on my w124 300-24 also. nothing as complex as this though. Mine was airflow potentiometer adjustment!
Awesome instruction AND camera work! A+++++
I don't have KE- Jetronic on my car but i'm so greateful for this video.
I also believe you can even tear the atom apart off camera.
thank u so much for making this video! now I want to rebuild mine lol
That "o-ring" that was installed in the bottom of the barrel onto the round slotted nut was actually a piston rest position seal. The nut depth should have been precisely measured and the round slotted nut marked in it's precise position before being removed. This nut sets the exact plunger rest position. The seal prevents the small amount of fuel that seeps past the plunger in the barrel from entering the intake manifold, causing a rich start condition.
i do measure this with my digital calipers, don’t remember if i showed this in the video, this is mentioned in the instructions anyway
Looking good, Sir!
David i have the correct guide pins set for re-installing the two halves back together in exact alignment and an ultrasonic cleaner you could have borrowed from me for this video - haha but did not realise you were going to tackle this for a video clip. German engineering +30yrs ago with such fine tolerances is pretty impressive to say the least
Excellent concise tutorial. Thamk you.
Great work! Thanks for the video
great video, thanks for uploading. I have fuel and engine oil mixing after my rebuild.... time to take it apart again.
joseph o'dea what the heck. Do you mean it is dumping so much fuel into the cylinders is getting into the sump? Something has gone VERY wrong. You might be better off getting an exchange unit.
@@MMWA-DAVE Tbh, i gave in chasing a non start situation. My local bosch dealer diagnosed it and i rebuilt the distributor, they re fitted it and the car still didnt start so they said it was the ezl. i took the car back still not running and found fuel in the oil, about 1.5 ltres. Please can you tell me , is there an o ring on the outside, on the base, close to the shim? Thanks for your replies and your videos
mine is the same as yours m104.
joseph o'dea Theres a large o ring that sits between the bottom of the fuel distributor and the air flow meter housing. If the ezl is blown you will have no ignition - it is important not to just test an ezl ignition car by watching for a spark from a disconnected lead to the block etc it must always have a spark plug connected as this alone can and does destroy them too.
thank you for the exceptional video ! again )
quick question, for how long did you leave the parts in acetone ? did you clean the plastic dishes too ? Im worried about dropping those in acetone tbh
Thank you, I will give it a try! :-)
Was there a specific problem you were trying to solve by rebuilding this, or are you just staying in keeping with the rest of the rebuild?
Either way, hats off to you for getting stuck in and not treating it like its the shroud of Turin!
Matt Teee mainly because i know the whole fuel system on this cars been contaminated by the utterly terrible fuel tank that was in the car when i got it. The fuel was putrid. It definitely needed the clean out at the very least as it was all sticky and yellow brown inside so why not throw a modern diaphragm in there while its open 😄
At 11:52, does the notch on the barrel line up with the other notch on the rim of the hole that the barrel inserts through? Looks like that if those two notches line up, then that tiny circular hole in the barrel, just above the black o-ring, would line up with the hole within the interior of the channel that the barrel slides through? However, then, when I position it thusly, the slitted channels of the barrel don't line up with the corresponding holes for each cylinder. I'm re-attempting my rebuild today, since I know now that I made a few mistakes. Looking over the whole assembly, I see that the slitted holes will line up properly if that notch in the barrel does indeed point to that region as you've specified. Also, on mine, looks like that the other notch on the rim is in a different place.
Excellent thank you
Remove the screws after marking the, then tighter and slacken after tightening by 1/2 turns.
Some stuff are like cat's shit; the more you mess, the more It stinks... 😂
Very good what's your doing I'm got full I dear how to beld the product of fuel thanks God protect you and your family around thanks very much
Maaaate, you need an ultrasonic parts cleaner, even a small one will make this job so much more thorough.
tony66au it blew up back when i was homeless living in a crackhouse cleaning my 6.9 parts obsessively. Yes homeless and a 6.9 owner. Not usually something that goes hand in hand.
Hi please help
What maybe the problem of a Mercedes Benz W123 280E to mix engine oil with fuel?
Good job
What is the best way to keep one of these is good operating condition?
2 stroke oil mixed in gasoline (1:150) is a good way to keep in good condition, esp. when engine isnt used for longer period of time
Do you already have the fuel accumulator? I happen to have one here that I need to get rid of.
Hello there,would request any machine calibration after the reassemble ? Thanks so much for your very useful teaching video.
I don’t fully disassemble the adjustment screws and i put everything back exactly where it was so I don’t mess up the factory calibration. For the best job I would send it off to k-jet specialists as he has the correct bosch calibration equipment.
I’m about to start on mine. Bought the seal kit of Colin. Wish me luck. I think I have an earlier version of a 85 500 SEC
1985 i’m thinking is the earlier version k-jet with a warm up regulator instead of an ecu controlled EHA valve
@@MMWA-DAVE yes, I have the warm up regulator. I can still use this as a guide though?
@@bevanwood6938 it will be pretty similar but early version also has pressure regulator integrated into distributor too from memory, so its more complicated with more parts
with early version id aslo be rebuilding warm up regulator too by the way. ideally the pair should be rebuild by someone who can calibrate them as a set for best performance. warmup reg also does acceleration enrichment etc, its not only for warmup phase its used at all times
@@MMWA-DAVE oh no. Hopefully I can do it. I’m in WA and I one would touch it except the guy from QLD. I was told from service people it’s over fuelling on cylinder 4 and it’s actually never run right since I’ve had it. Was stored for along time.
You never know what can show up on Ytube. Wow, I'm a bit of a Benz nut, ... You are over thinking this. ... Take it apart, notes , pics. Clean and organization. Its not hard. The W124 is a great car. my 1991 300E 6 cyl. 3 litre, just keeps on running. Change all the fluids, everything, often, two oil and filter changes a year. Syn. Mobil One. Front pads every two years, they are not expensive. Even with 50 percent left, change them. Maybe you had a Idle issue, floating up and down or stalling. Too Low. Idle. ? ... It's vapor lock. I experience this on occasion. A Hot start after the car is parked for ten to twenty minutes, on a warm day. It can hit 38.C - 48.C here in Adelaide South Australia in the summer. I wired a switch, located it beside the console to turn on the fans, with the A.C. off. Great in Traffic, If left in the On position, they will run for about 15 minutes, after parking, car locked and blows the heat away. Remove the mechanical fan completely. Over 70 - 80 k.m you do not need any fan at all.
I have an Audi 100 with 2.3e AAR engine using a Bosch KE-Jetronic fuel system. Planning to do the same. Where did you purchase the rebuild kit exactly?
this kit was purchased from k-jet specialists in queensland australia, i have also used the other american kit on ebay before too.
Loving your superb videos. Rebuilt mine yesterday and had a disaster, snapped one of the plastics discs. I don’t suppose you know of any supplier (anywhere in the world!) that sells them? Thanks
Kevin Green just find another fuel distributor off a junk car and start again is what I would do. Just be very careful when closing to prevent this happening again.
MMWA thanks. That is looking like the only option. But at £350+ for a second hand one, looks like I’ve had a very expensive accident!!
Seems crazy the parts aren’t available. Found a few firms that offer refurbished units so they must have access to the parts. Was also thinking about getting one scanned and 3D printed.
Kevin Green as far as im aware they just scrap other units for spares. Im not aware of anyone making the individual parts other than whats in the rebuilding kit. I beleive bosch themselves have even stopped rebuilding fuel distributors and stopped making them new a long time ago.
thank!!!!
Sir where is the metering valve located?
My diaphragm isn't as bad as you and it doesn't have any tears should I replace it or don't need to?
If you already opened it, I would be replacing it.
Could you make the diaphragm stick to the lower chamber with a bit of fuel or silicone grease?
This isnt mentioned in the manuals so I didn’t do it, not sure if this would be advisable if it in any way stiffened the diaphragm.
You still have to do a traffic test.
Hai i would like to buy the diagram. Im from malaysia i have a w124 230 year 1991.can u advice me how to purchase the diagram n the rubber seal.
you can find this man on the internet, he has a website, the business name is K-Jet Specialists his name is Colin Dunken and he is in Queensland Australia
Hi can you help me please. I'm having problems. Please.. please..please..
Where can i get the rebuild kit and how can i know which one i need ?
My distributor has the number (0438 101 012) on it
Im rebuilding an 1986 300e w124 here in chile
Tanks, from Malaysia, I have 2 units (W124 & W126 ) very well enplaned on fuel distributor , where can i purchase to service kit for 6 cylinder distributor, Can someone advice me . Thank in advance
Excessive feul usauge