Doing a "ROLLING RESTORATION' All a Nice W123 300D Turbo Diesels

Sometimes you find one that is special - Meet Bubbles

This is a very special 300D turbo diesel sedan. It was named "Bubbles" by the previous owner because she felt the color looked like the color of champagne. Rather than try to tell you all about this car, I am going to have you watch a number of videos below. The first video will explain how we came to be owners of this pretty W123. The second video will show you why this one is a real rocket when it comes to acceleration and speed. The third video covers what we did to get the automatic transmission to shift properly.

Meet Bruno and Sacco

You will have to agree this is quite the pair!

You are looking at examples of two of my favorite car designs of all time. I named them after the legendary Mercedes Benz designer Bruno Sacco. I personally consider this man one of the best automotive designers of all time. He shaped the face of Mercedes Cars during the 1980s and 1990s. The W126 released in 1980 was the first model he was almost solely responsible for and the R129 is considered by many to be one of his finest achievements. 

Failing R107, W116 and W126 V8 Fuel Delivery Systems

Don't think yours is ok. Get under the rear and visually inspect it.

The M116 and M117 V8's survived production for over 20 years (1970 to 1991), so now these engines are all 30 to 50 years old.  The rear fuel delivery system is an important part of these engines and it is often neglected even by professional mechanics. Recently I have seen two cars that had their fuel pumps replaced professionally, but the old fuel hoses were not changed! Every single one of these old V8's I have seen in the past 5 years needs something done back there whether it be for safety, reliability, or performance. Once again, if you want it done right you need to do it yourself.

Injector Nozzles back in Stock from Monark Diesel in Germany!!!

Monark has partnered with PE Automotive

<p>Monark has just partnered with PE Automotive and the nozzle production has started back up at the factory in Hamburg!!! We are thrilled to be able to offer the Monark brand nozzles once again for our Mercedes Customers!!!

The Best Car Ever Made Will Live Forever

Many agree. This in the ONE. A 1983 W123 White 240D with manual 4 speed transmission and manual windows

Look what just arrived at Mercedessource. It was 40 years ago and Kent remembers clearly the first time he really noticed a Mercedes Benz. In fact it turned his head when he walked by. It was 1980 and he was walking around the Pamona Car Swap Meet in Southern California. To be continued...

Doing a Rolling Restoration to Keep the Motivation High

Follow along as Kent does just that on his 1983 R107 380SL

So you want to pick up and restore an old Benz - maybe even a classic SL convertible? I have a recommendation. Bring home a running and rolling restoration project. Do NOT bring home a project car that is not running, needs a repaint, and shows severe signs of neglect. I get people disagreeing with me all the time on this, but you can not believe how many "project" Mercedes I run across that people have given up on. Follow along as I do this on a loved 380SL. You will understand better why I am such a believer in approaching any old car project this way.



Happy Spring everyone!

Here is our coupon code for the month of March

Get $ 10.00 OFF any order of $ 99.00 or more! ( Excluding sale items and shipping costs)


May the luck of the Irish be with you!



D.I.Y. Engine Removal Checklist for 1985 and Older Mercedes Diesels

Not all that difficult if you have an engine hoist, ramps, tools and Kent's checklist

There are a number of reasons for removing an engine from an old diesel: rebuilding, replacement, restoring, repairing and detailing. Feel free to print out this checklist and use it as a step-by-step guide anytime you plan to do the deed.  CLICK ON READ MORE. Kent Bergsma

Diesel Engine Removal Checklist:


The days are getting shorter! Halloween is just around the corner!

our Coupon code promo for October is


Get $ 22.00 off your order of $ 220.00 or more ( not including shipping)

Happy Halloween from all of us at Mercedessource!

Preparing an Old Benz for a Long X Country Road Trip

Specifically 25+ years old. The older the more work you may need to do

Have you ever wanted to make a cross-country road trip in a 30 plus-year-old Mercedes? I have always thought it a little “risky” unless the car was thoroughly checked over. I usually recommend if you are purchasing a car that old from “afar” you might want to consider having to truck it to your location. We have heard from a number of our customers who have made such a trip successfully and suggest I might be a little too cautious. A couple years ago I sold a 1980 240D to a buyer on the East Coast. I suggested he truck the car back east but he was adamant about driving it.

What Got Kent Into Mercedes Benz 25 Years Ago

Let Kent tell you how it happened... just to "help" an old pilot friend out

"So how did you happen to go from being a pilot to getting involved with older Mercedes Benz?" This is a question that Kent gets ask a lot. Most of us can recall those seamingly insignificant events that end up changing the whole course of our lives. CLICK ON THE PICTURE TO LEARN MORE. So was the case here. It all started with a 1982 240D in the early 1990's. Watch the video below and he will explain how it all happened and why he continues to be passionate about old diesels. 

Will They Really Go a Million Miles?

It takes a lot more than hype to make a diesel engine last!

I am sure you have heard it before, "Oh, these old Mercedes diesels will go a million miles." Sounds pretty good, doesn't it? But maybe it sounds too good to be true.

To be continued: 


My NUMBER ONE Warning That You Should Heed

There are a number of things that can break on an old car but this one will really leave your stranded!

From my own experience and from hearing from lots of other's experiences I can not stress enough - DO NOT NEGLECT YOUR IGNITION TUMBLER AND STEERING LOCK ASSEMBLY! If your key is starting to "stick" or "catch" in the tumbler then you shoud replace it before it will not turn and leave you stranded!  In the picture here the owner tried to drill it out, but let me tell you they do not drill out very well. If you neglect this warning you could end up spending hundreds of dollars instead of less than $50 for new new tumbler and keys.

Whats up with all these issues with Diesel Pre-chambers?

Kent explains how the prechamber works, what can go wrong and how to fix problems

Fuel Leaks. Air Leaks. Rough running diesel engine. All around your diesel injectors! Collar nuts might just need to be tightened, but could be too worn and need replacment! If you are having problems with your diesel prechambers we have tools and parts to help!

Below is a great Video Kent did on all the in's and out's of Prechambers and will explain in detail what each part is, how it works, and how to replace it. Watch the other two videos to see how the tools work along with a warning if you plan to remove a pre-chamber. 

Finding the Leak in the Suspension of an Airmatic equipped Mercedes

If you can find and repair the leak (s) yourself you can save Thousands $$$$

It is the end January 2017 and Kent has just finished filming a new video on how to find air leaks in an Airmatic suspension.  There is nothing like driving a Benz with Airmatic, but there is a price to pay... and that price does not need to be that much if you learn to diagnose and repair the leak (s) yourself. Do not be afraid to tackle these systems! Kent will make it easy for you to save lots of money if you are willing to learn and apply knowledge. 


New Ways to Thoroughly Clean Gas Engine Fuel Injectors

Many of the older injectors will need to be "back flushed"

Not all older MFI and CIS fuel injectors are "restorable." Some are just plain worn out. If the tip is worn out or damaged there is nothing you can do to repair that. There are no replacement parts available for Bosch mechanical gas fuel injectors. You can not replace the tip. The fuel injector is sealed up tight during the manufacturing process.

May is Read a Book Month!

Summer is upon us - Road Trip fever is here!

This is the Best Time of the Year…to Smell the Flowers… and to Work on Your Benz..

Full Service Brake Tips

Do a full brake service on your older Benz BEFORE hitting the road.

This is that time of year we pull our prized Mercedes out of winter storage and get it ready to hit the road. Just today (April 8) it was 72 degrees and bright blue skies here in Bellingham. Tomorrow I am going to put the top down and take Happier (my 280SL) for a tour of the countryside. :-)

Kent's Garage Episode 20

250SL Brakes Rebuild or Replace, Shrunk SL Top, Cleaning Rotors, 300TD SLS

In this episode Kent shows what he found wrong with the brakes on a 1967 250SL. Why was it so costly to repair anyway? He discusses the causes of sticking brakes and challenges he faces to find a way to help owners of older Mercedes or any other old car to prevent having to do these type of extensive and costly repairs. When it comes to brakes nothing beats prevention. The same could be said for the self leveling suspension on a 300TD wagon. Work starts this coming week on helping the owner find out why his rear suspension is acting so badly and what it is going to take to fix it. 

Sunroof Service "OR" Repair

You get the “catch?” If you don’t service it you will be repairing it!

Many owners forget that sunroofs need to be serviced. If neglected there is a price to pay. The NUMBER ONE cause of sunroof failure is lack of lubrication! When a sunroof can not slide easily on the tracks due to dried out lubricant and dirty slides, it puts a heavy strain on the drive mechanism. This leads to tilt arm, motor drive and cable failures. Even manually operated sunroofs can suffer from broken handles and latch mechanisms due to lack of proper lubrication.

2000 Hour Inspection and Service

Kent shares some similarities between automotive and aircraft maintenance

So what is a 2000 hour inspection? How do you know when you have 2000 hours on your car? Many aircraft engine manufactures recommend rebuilding the engine at or around 2000 hours.

DIY Diesel Engine Maintenance Tips

Check out our growing playlist of DIY Diesel Engine Tips

Over the next several months he will be working on a series of videos that focus on specific maintenance tips related to the older diesel engines. New videos will be added weekly. Most will be very specific and will run 3 to 8 minutes in length.

I Can Help You Solve Your Ignition Key and Steering Lock Problems

If you are having problems with a sticking key, a fussy steering lock...

If you are having problems with a sticking key, a fussy steering lock, a malfunctioning electrical switch or worse yet - a key that will not turn, I have the solutions to help you fix it yourself. In fact, for the 1975 to 1995 Mercedes models my website has the most the complete set of resources to help you fix these problems of any website in the world!

Considering Purchasing a 90s Model Mercedes? Just My Humble Opinion.

I realize that not all our customers want to restore an older Benz. Some would rather spend the money and purchase a nice Mercedes that does not need a lot of work. Even if one spends top dollar for a pristine model, it usually turns out to be cheaper than buying a project car and paying to have it fixed up. From my experience, the only time it pays to restore an older Benz is if you do all the work yourself and don't count the cost of your own labor!

CPR for a 6.9 - Kent Bergsma's Newest Rescue Attempt

I had decided a year ago that my days of restoring old cars were probably over. I don't seem to have the energy I once had and with all that is going on in the this business every day, I hardly have time to do oil changes on my numerous daily drivers. But no matter how hard I try, I just can't seem to rid myself of the desire to rescue another special Mercedes. And so it has happened again. Look what I trailered home on November 22. It is a 1978 450SEL 6.9 (European model) with classic Euro bumpers, headlights, and velour interior.

P-38 Fighter Pilot Encounter - A True American War Hero!

This weekend (July 30, 2011) I had the privilege of meeting a true American World War II hero. Our radio Control flying club had a model warbird fly-in on Saturday. We invited Joe Moser to attend the event and share his story and sign copies of his new book. Joe was a P-38 pilot who flew 44 combat missions over Europe in the period leading up to D-Day and the weeks immediately following the invasion of Europe. On August 13, 1944 his P-38 Lightning twin engine fighter was shot down by enemy gunfire over France.

In Remembrance of Les Bergsma

My father, Les Bergsma, passed away on July 24th at the age of 90. On Friday, September 3 the family gathered together to remember and celebrate his life. It was a very special day for us as we gathered at the old seaplane base location and had a Cessna floatplane fly overhead and drop roses on Lake Whatcom. He was a kind man with a gentle spirit who lived a life of integrity and faith. What I have done and what I am doing today is largely due to his influence. Many of you know that I have a background in aviation, but few know that my father was also a pilot.

Daily Happenings around the Shop

As much as I try to get away from it, I end up working on old Mercedes almost every day of the week. When I post pictures like the ones here, people often ask if I still work on customers cars. Unfortunately, I just do not have the time anymore. When I do work on cars, it is primarily for the purpose of writing a repair manual or developing a new repair kit. If that does not keep me busy enough there are always my own Mercedes (too many), family cars, or friends cars that need help. It is hard to say no. I guess I have to admit I still like cars even after working on them for 50 years.

New Mascot Arrives at Mercedessource

Meet our new company mascot! It is a very nice white 1966 Fintail 230 sedan. You can tell we are pretty excited around here about receiving this little sweetheart. There is a reason for this. It is not often a customer drops by to give us something. It is a new experience for us that a gentleman Mercedes enthusiast would drop by to tell us he wanted to give us his car! Thats right - give it to us... He has owned the car since 1970 and wanted it to find a home where it would be maintained and lovingly cared for. I have seen a lot of Finbacks over the years.