Here you go. Consider doing it before the parts go up in price or are not available: mercedessource.com/store/1986-1991-r107-and-w126-twin-pump-fuel-delivery-overhaul-kit
3:56 - ...work of art.” The 126 Is altogether a work of art. We own a V140, which I think is “stately”, but the 126 is “better looking.” That it was produced so many years (late ‘79 - late ‘91) confirms this. Either that, or they kept making them because the 140’s intro kept being delayed. Kind of funny they made both models simultaneously for a few months in 1991.
Nice job Kent. Here in ireland a beast like that is seldom seen due to the price of gas here and the cost of road tax on big engines. It would be almost 2000 dollars to tax it for the year. I just have to make do with my CLK 200 from 2003. 80k miles and I love it. Do you ever do any work on any of those?
We don't have the CLK200 in the U.S., but I do own a 2006 CLK 500 AMG. Might be a little faster than your 200 :-). I named the car "Giggles," because every time I punch the throttle I find myself giggling. LOL
@@Mercedessource Lol i can understand that. Most of the Mercedes you see here are Diesel motors. Diesel is king here in terms of fuel economy, although they are trying to force everyone into electric cars now. They'll have a job getting me into one. My CLK 200 I bought for the equivalent of 700 dollars and previous to that, I had a 2004 C180 coupe for 2 and a half years but I got hit with the oil migration into the engine loom via the cam magnet connectors. On the CLK (same M271 motor) the first thing I did was fit new magnets and the oil blocking pigtails. I really like fooling around with old Mercs and a lot more since I came across your channel. I have made a few videos on the C180 I had on some of the jobs I did. Anyway, keep up the good work and warm regards from Central Ireland. George
3:47 It is too pretty to get all full of road grime again. lol Is there a way to do a custom shroud that would protect it better without sacrificing whatever safety from the original design was? Maybe a deflector ahead of it? That is a special piece of art, and having it endure any extra road grime should just be more preventable. So many small places for excessive dirt and water to sit and corrode. Fantastic reveal!
I recently found a leak, most likely from that old thick rubber hose outlet with the two metal clamps - I recently got all new bosch pumps, fuel filter and accumulators done - is there a way to only get the hoses, or a place where I could get a hose that would fit? Help greatly appreciated!
@@Mercedessource ahh I found one for 107 on your site! I think it’s deteriorated and gasoline is seeping through the braided outlet hose - I’ll order a replacement one!
Hi Kent, great job as always! Can one use 2x of the W123 style pumps here? I know these are thinner but will 2x 123 style ones work instead of the 2x thinner ones?
This video was GREAT !!!! I have a 1990 Mercedes 560 SEL that I've owned for 20 years. It has under 90.000 miles and it's in mint condition. I put it away in December on a trickle charger. It's now April and I tried to start it up with a half tank of gas. It only cranked but would not start. I heard the sender kick in but I couldn't smell gas at all near the intake. I haven't checked for a spark yet but as an educated guess,...does it sound like I need a new fuel delivery system? ? ?
It is always best to troubleshoot the problem before buying parts. It could be more than one thing or even multiple issues that could be causing your problem ( just due to the age of the car ). If you have owned the car for 20 years it has never been replaced the back end fuel delivery system most likely should be replaced for safety and reliability. Here is the link to the kit. Thanks, Kent. mercedessource.com/store/1986-1991-r107-and-w126-twin-pump-fuel-delivery-overhaul-kit
Thank you so much for your videos! They are priceless. My dad gave me his 1986 560SEC which I'm attempting to restore. She's been sitting for around 8 years or so. I rebuilt the fuel assembly with 2 new pumps, filter, accumulator, hoses and screen. I have also put in new plugs and wires, and naturally changed the oil. Now she starts so strong and dies over a 8 second period. If I hit the gas, she just quits. I've replaced the relay which is what got me started. A few weeks ago when I got it started I ran a seafoam cleaner through the tank. It ran for about an hour or so smoothly. Now she just starts and dies. What do you think I'm missing?
What you are experiencing is quite common on these old K-Jet engines that have sat for long periods of time - ethanol in our gas raises havoc inside the fuel distributor. It deteriorates the seals and gums up the passages. Google for more info. You might try adjusting the fuel mixture to get the engine to run well enough to run fuel injector cleaner through the system. There is lots of info online about mixture adjustment.
Hello, do you have a video talking about the adjustment of the dispenser that sends fuel to the nozzles of the w126 v8 I would be grateful if you could help
Hi ken! I have a 1988 420SEL W126 and I put a fuel additive called fuel doctor and after it ran for a few days now the car won’t start and I am thinking I may have ruined my fuel system. Would a kit such as yours fix my problem? I don’t know the history of the car and it’s done just over 324k km. Would this fix my problem or would it be a different problem that’s causing my car not to start? I am located in Australia. Any advice please would be welcomed
There are so many things it could be. Probably not even related to the fuel additive. You need to do a complete diagnosis BEFORE ordering any parts. May not even be fuel related. Compression? Fuel pressure? Ignition spark? etc.
Greetings from Australia Kent, Some desperate resolvement / Advice Needed Please. My 1991 W126 500 se was standing under covers in the garage for around 8 years.Getting it running again I have changed, Fuel pump & filter. new eha. New fuel pump relay. New pressure regulator.Apon starting the car it ran very rough and black smoke out the exhaust.smelt like excessive fuel. I then started messing with the c/o screw. Now the car won't start at all AND the new spark plugs are WET with fuel............. ( I forgot to mention I am not a MECHANIC ) Any advice Please...........???
I suspect your fuel distributor has gone bad from sitting with old fuel in it. You will need to get a fuel pressure gauge hooked up to the system to help diagnose what is going on.
Hi Sayed, Great point that I forgot to mention. Yes, contamination from rusty fuel tanks is the No. 1 cause of premature fuel pump failure. Thanks, Kent
Love your work I have 1990 560 sec ,the only issue i have is that it does not start from the first or second time specially if it been sitting for more than an hour any ideas?
Any evidence the fuel pumps or accumulator have been replaced recently? If not, I recommend you completely overhaul the fuel delivery system. The 560SEC is definitely worth the investment! mercedessource.com/store/1986-1991-r107-and-w126-twin-pump-fuel-delivery-overhaul-kit
How long would it take an experienced MB mechanic to install this kit on my 560SL? I am not handy and would like to order this kit and give it to my local Indy MB shop to install. However first I'd prefer to have some idea of how long this takes to install so I can plan for the labor cost. 30 minutes, 2 hours, 4 hours? I have no clue and would appreciate any guidance. Thank you
My kit is really designed for the DIY owner. If you can do oil changes and have some car ramps you can do this yourself. My lengthy video instructions will walk your through the process step by step and you will know it gets done right. If you feel a mechanic must do it I would check with him before you order my kit. Many shops do not like it if you supply the parts - it can create a warrantee problem for them. Time of install depends a lot on the condition of the car. If there is rust on the fittings, brackets and fuel lines that car really add to the time. If they know your car they can give you a better estimate.
@@Mercedessource If I do it myself how long should it take (assuming I am inexperienced). A time range is fine rather than a specific number. e.g. Between 4 and 8 hours? Thanks
@@michaelsylvester3968 If your car is not rusty underneath and you get the tank as empty as possible I estimate 3 to 4 hours if you are new to it and working on the ground. If you have access to a car lift you could shave an hour off that time.
You did an outstanding job on that fuel system overhaul!! I need one for my 1989 560 SEC
Here you go. Consider doing it before the parts go up in price or are not available: mercedessource.com/store/1986-1991-r107-and-w126-twin-pump-fuel-delivery-overhaul-kit
Just did this job. It’s a very nice piece of engineering.
Really impressive job Kent! Learnt a lot from watching this channel.
Thanks!
The price is extremely reasonable. I have an 88 SEC with less than 70K, and it's starting to have fuel issues. Time to order this kit!
I fired up the 420SEL today and was amazed at how smooth the idle is now. When the engine is hot it fires on the first crank!!!
The best instructor!
3:56 - ...work of art.” The 126 Is altogether a work of art. We own a V140, which I think is “stately”, but the 126 is “better looking.” That it was produced so many years (late ‘79 - late ‘91) confirms this. Either that, or they kept making them because the 140’s intro kept being delayed. Kind of funny they made both models simultaneously for a few months in 1991.
Good job, pristine parts 😎👌
Nice job Kent. Here in ireland a beast like that is seldom seen due to the price of gas here and the cost of road tax on big engines. It would be almost 2000 dollars to tax it for the year. I just have to make do with my CLK 200 from 2003. 80k miles and I love it. Do you ever do any work on any of those?
Well i have a 560 SEC here in the UK and yes the fuel cost can be high - but its smiles per gallon ☺
We don't have the CLK200 in the U.S., but I do own a 2006 CLK 500 AMG. Might be a little faster than your 200 :-). I named the car "Giggles," because every time I punch the throttle I find myself giggling. LOL
@@Mercedessource Lol i can understand that. Most of the Mercedes you see here are Diesel motors. Diesel is king here in terms of fuel economy, although they are trying to force everyone into electric cars now.
They'll have a job getting me into one. My CLK 200 I bought for the equivalent of 700 dollars and previous to that, I had a 2004 C180 coupe for 2 and a half years but I got hit with the oil migration into the engine loom via the cam magnet connectors.
On the CLK (same M271 motor) the first thing I did was fit new magnets and the oil blocking pigtails. I really like fooling around with old Mercs and a lot more since I came across your channel.
I have made a few videos on the C180 I had on some of the jobs I did. Anyway, keep up the good work and warm regards from Central Ireland.
George
@@abbashussain6390 Models like that here are non-exsistant due to the extorsion type road tax they have here on anything over 2 liters pre 2008
The 560 is rare in Ireland. I'm lucky enough to have a C126 560SEC.
you the best 👍👍👍👍👍👍👍
Looking VERY good!
3:47 It is too pretty to get all full of road grime again. lol
Is there a way to do a custom shroud that would protect it better without sacrificing whatever safety from the original design was? Maybe a deflector ahead of it? That is a special piece of art, and having it endure any extra road grime should just be more preventable. So many small places for excessive dirt and water to sit and corrode.
Fantastic reveal!
I am only going to drive now on clean roads with the sun out...LOL
I recently found a leak, most likely from that old thick rubber hose outlet with the two metal clamps - I recently got all new bosch pumps, fuel filter and accumulators done - is there a way to only get the hoses, or a place where I could get a hose that would fit? Help greatly appreciated!
We sell the new fuel tank outlet hose. If you have a W126 you can go to my website and just put "W126 tank outlet hose" in the search box.
@@Mercedessource i have a 560sl, is it the same one?
@@Mercedessource ahh I found one for 107 on your site! I think it’s deteriorated and gasoline is seeping through the braided outlet hose - I’ll order a replacement one!
Hi Kent, great job as always! Can one use 2x of the W123 style pumps here? I know these are thinner but will 2x 123 style ones work instead of the 2x thinner ones?
I am not sure. Maybe you could do some research to see if the pump pressure is the same.
Love your videos, wish you were closer to me ! Lol
How do I reset my 1989 560 sec after battery dies ?
Looks Nice 👍
This video was GREAT !!!! I have a 1990 Mercedes 560 SEL that I've owned for 20 years. It has under 90.000 miles and it's in mint condition. I put it away in December on a trickle charger. It's now April and I tried to start it up with a half tank of gas. It only cranked but would not start. I heard the sender kick in but I couldn't smell gas at all near the intake. I haven't checked for a spark yet but as an educated guess,...does it sound like I need a new fuel delivery system? ? ?
It is always best to troubleshoot the problem before buying parts. It could be more than one thing or even multiple issues that could be causing your problem ( just due to the age of the car ). If you have owned the car for 20 years it has never been replaced the back end fuel delivery system most likely should be replaced for safety and reliability. Here is the link to the kit. Thanks, Kent. mercedessource.com/store/1986-1991-r107-and-w126-twin-pump-fuel-delivery-overhaul-kit
do you make a kit for the W126 1st generation. I own 2 W126, 1985 500 SEL and 1985 500SEC.
Are they European models? If so I would need to see some pictures.You can send them to sales@mercedessource.com. Where are you located?
@@Mercedessource no, they are US models
Thank you so much for your videos! They are priceless. My dad gave me his 1986 560SEC which I'm attempting to restore. She's been sitting for around 8 years or so. I rebuilt the fuel assembly with 2 new pumps, filter, accumulator, hoses and screen. I have also put in new plugs and wires, and naturally changed the oil. Now she starts so strong and dies over a 8 second period. If I hit the gas, she just quits. I've replaced the relay which is what got me started. A few weeks ago when I got it started I ran a seafoam cleaner through the tank. It ran for about an hour or so smoothly. Now she just starts and dies. What do you think I'm missing?
What you are experiencing is quite common on these old K-Jet engines that have sat for long periods of time - ethanol in our gas raises havoc inside the fuel distributor. It deteriorates the seals and gums up the passages. Google for more info. You might try adjusting the fuel mixture to get the engine to run well enough to run fuel injector cleaner through the system. There is lots of info online about mixture adjustment.
Hello, do you have a video talking about the adjustment of the dispenser that sends fuel to the nozzles of the w126 v8 I would be grateful if you could help
sorry I do not. There is a lot of info on the internet if you search for it
Hi ken! I have a 1988 420SEL W126 and I put a fuel additive called fuel doctor and after it ran for a few days now the car won’t start and I am thinking I may have ruined my fuel system. Would a kit such as yours fix my problem? I don’t know the history of the car and it’s done just over 324k km. Would this fix my problem or would it be a different problem that’s causing my car not to start? I am located in Australia. Any advice please would be welcomed
There are so many things it could be. Probably not even related to the fuel additive. You need to do a complete diagnosis BEFORE ordering any parts. May not even be fuel related. Compression? Fuel pressure? Ignition spark? etc.
Hey what’s the difference between the m103 L6 that was in the 300SE fuel pump and the V8 one? Is there a difference?
The pumps are the same.
@@Mercedessource ok cool thank you for responding
Greetings from Australia Kent, Some desperate resolvement / Advice Needed Please. My 1991 W126 500 se was standing under covers in the garage for around 8 years.Getting it running again I have changed, Fuel pump & filter. new eha. New fuel pump relay. New pressure regulator.Apon starting the car it ran very rough and black smoke out the exhaust.smelt like excessive fuel. I then started messing with the c/o screw. Now the car won't start at all AND the new spark plugs are WET with fuel............. ( I forgot to mention I am not a MECHANIC ) Any advice Please...........???
I suspect your fuel distributor has gone bad from sitting with old fuel in it. You will need to get a fuel pressure gauge hooked up to the system to help diagnose what is going on.
Thank you for replying. I will get that checked out.
You must see in side the tanck it is not rusty befor the job ...thanks for informatio
Hi Sayed, Great point that I forgot to mention. Yes, contamination from rusty fuel tanks is the No. 1 cause of premature fuel pump failure. Thanks, Kent
@@Mercedessource
☺👌
Where is the link to purchase this setup?
Where can I order the hole pump and hoses and connection I need everything for a 89 560sel
Here is the link: mercedessource.com/store/1986-1991-r107-and-w126-twin-pump-fuel-delivery-overhaul-kit
Love your work
I have 1990 560 sec ,the only issue i have is that it does not start from the first or second time specially if it been sitting for more than an hour any ideas?
Any evidence the fuel pumps or accumulator have been replaced recently? If not, I recommend you completely overhaul the fuel delivery system. The 560SEC is definitely worth the investment! mercedessource.com/store/1986-1991-r107-and-w126-twin-pump-fuel-delivery-overhaul-kit
@@Mercedessource thank you Sir I will look in to it.
How much for a kit on a 1991 Mercedes 420 SEL fuel pump kit?
Here is the link to the kit: mercedessource.com/store/1986-1991-r107-and-w126-twin-pump-fuel-delivery-overhaul-kit
How do I get the kit. I have a 1998 560sl. American model
Did you mean 1989 560sl?
If so, here is the link to the correct kit: mercedessource.com/store/1986-1991-r107-and-w126-twin-pump-fuel-delivery-overhaul-kit
How can I get the hole kit of that one
Here is the link to the entire kit: mercedessource.com/store/1986-1991-r107-and-w126-twin-pump-fuel-delivery-overhaul-kit
I lived in sun valley I need the kit restoring 91/500 sl
Sorry, I do not have a kit for your 500sl
How long would it take an experienced MB mechanic to install this kit on my 560SL? I am not handy and would like to order this kit and give it to my local Indy MB shop to install. However first I'd prefer to have some idea of how long this takes to install so I can plan for the labor cost. 30 minutes, 2 hours, 4 hours? I have no clue and would appreciate any guidance. Thank you
My kit is really designed for the DIY owner. If you can do oil changes and have some car ramps you can do this yourself. My lengthy video instructions will walk your through the process step by step and you will know it gets done right. If you feel a mechanic must do it I would check with him before you order my kit. Many shops do not like it if you supply the parts - it can create a warrantee problem for them. Time of install depends a lot on the condition of the car. If there is rust on the fittings, brackets and fuel lines that car really add to the time. If they know your car they can give you a better estimate.
@@Mercedessource If I do it myself how long should it take (assuming I am inexperienced). A time range is fine rather than a specific number. e.g. Between 4 and 8 hours? Thanks
@@michaelsylvester3968 If your car is not rusty underneath and you get the tank as empty as possible I estimate 3 to 4 hours if you are new to it and working on the ground. If you have access to a car lift you could shave an hour off that time.
@@Mercedessource Thanks a lot - I really appreciate this information.
Its look a nasa projeckt Cool MB