Failure of these hoses can lead to total destruction of your engine
What's wrong with my Mercedes?
Top problems for diesel owners. Kent recommends starting with the basics
Quick list of things you can consider to increase performance and mileage
Plastic guide rails and oiler clips can fail leading to major engine damage
Yes, Kent has seen it first hand. Don't neglect this!
Could be any number of things causing the problem. Proper diagnosis is a must!
Injectors do not last forever. Changing over to Monark nozzles can boost performance!
Don't just ignore your turbo charger or major problems can occur!
Timing tends to retard over time with wear and chain stretch
Good reference material if you plan to replace timing chain and related parts.
Most of those annoying leaks can be fixed with our DIY kits
This can help smooth out a rough shakey idle on an 5 cylinder turbo diesel
Diesel Purge can help you isolate the noise
It is almost always a failed thermostat
Do it very soon unless you know it have been done within the last 50,000 miles.
There are a number of reasons - don't throw money at the problem - diagnose first!!!
Before spending any money on a tired or ailing diesel engine - check the compression first
Don't neglect the fuel filter and fuel pump check valves
A special compound should be used - especially with steel bolts in aluminum threads
Many are surprised to learn there is a filter down inside the pump
Doing it without damaging the wire boot and resistor is easy with the right tool
Alert for all Diesel Owners - Check for loose Intake / Exhaust Manifold Nuts.
Applies to 220D 240D 300D 300CD 300TD 300SD 1972 to 1985
Failure of these chains can lead to catastrophic engine failure
This MUST be installed properly when replacing it or timing chain or engine damage can occur!
This is often neglected and an easy D.I.Y. job
Usually means something is broken or loose in the engine compartment
Avoid the pain of having to drill or cut the bolts off
Fuel injectors will need the most attention
Check Your Low Pressure Power Steering Pump Hose
Common problem due the failed air cleaner mounts and mounting bracket
Summary list of the most common causes and parts needed to fix them
How to determine if they need replacement
You may have to make your own like Kent did...:-)
The distributor cap has become the number one culprit due to age and neglect!
With the right paint and technique YOU can do it yourself!
They can fall off especially if your exhaust system is sagging or not mounted properly
Summary list of the most common causes and parts needed to fix them Part 3 of 5
It is best if you can see and hear it run - if not some tests are essential
Find out what it does, how to test it, and what happens if it does not work.
Here are some quick checks you can do yourself to determine how good the engine is.
You neglect the maintenance here and you WILL pay the price
Alert! Use at your own risk
Don't just install the engine without taking care of a number of potential problems
Summary list of the most common causes and parts needed to fix them. Part 5 of 5
Kent has been inspired to design his own series of ultimate shop lights
Sometimes they are really stuck on the shaft!
If the break was clean and the tank still solid you can be repair it for less than $50.
Some special tools can help
If not too far gone you can fix them - and yes it is a miracle!
An ounce of preventation is worth hundreds of dollars in repair
Parts are different so it is important to know which engine you have!
Summary list of the most common causes and parts needed to fix them Part 4 of 5
The best way is to use an oil extractor
Very easy to do if you know what to do with that little numbered black box!
They can be a little tricky to isolate
This can be a sign that the engine has not been well maintained
If you don't look closely this one can be hard to find!
Are you concerned about damage to the electrical components and sensitive electronics?
How to tell which one you have?
It is not the problem with the new nozzle - there are other issues that cause poor spray
Sometimes you just have to take a break from working on your diesel... :-)
Sometimes it can be near impossible to get the bolts out and the parts separated
Monitor your engine temperature gauge in the morning for telltale signs.
Now the timing marks don't line up - What do I do! - Help...
Catch them with a diaper before they drip on the ground!
Too Cold think thermostat - too Hot think a number of possible causes
Here are some of Kent's favorites - most you should carry in your trunk
You of course need the right wrenches - but if one or more won't adjust - what then???
There is a better and cleaner way!
Could be the starter itself, ring gear on the flywheel or a combination of both
This is how Kent deals with the problem
Biodiesel is not too kind to rubber
These can be hard to see if your engine is dirty and you don't know the exact location
6 part video series on reasons why you should or shouldn't
It could be turbo seals but it could also be excessive diesel engine blow-by
Fan clutch can make metallic clinking noises
These can be a little tricky to get on
Your inspection should always include this
A faulty 617 turbo diesel waste gate can really affect engine performance
With the right tool and a little know-how it is super easy.
With the right instructions this is a beginner DIY job.
Even low mileage gas Mercedes as Kent recently discovered.
Be sure to check your radiator / expansion tank cap
Pay attention! This is very common and can happen to you if you own a 1968 to 1985 diesel
It could be a number of things causing the problem. Follow Kent's video series
Applies to most models from 1980 to 1995
An old hose can be very difficult to remove due to age and corrossion
At all costs avoid rounding out the hex head of the bolt!
Best done from the front crankshaft bolt
Milestone 6 cylinder diesel only available in 1986 and 1987
Listen and learn from a live video with sound.
It takes work but with the right products and techniques you will be amazed
This can be difficult to diagnose
Sometimes fuel injector cleaner can work wonders
You would be amazed at the pesky problems these can create!
A very common problem that requires MORE than just installing a new rubber gasket
Not easy by any means. Options and ways to prevent it are listed here.
If you use RTV you can create some real problems
Some are no longer available new and the last ones will disappear soon
You actually may not need a large tank to thoroughly clean them
Do not neglect to give it Kents 30 day exercise program
Ball joints and pivot points should be lubricated on a 6 to 12 month basis
This can be a real challenge if the problem comes and goes either warm or hot
If the engine has been overheated it is almost never "just a head gasket"
How can you do it without removing them from the engine?
A common problem due to failed valve guide seals
Sometimes having the right tool is key
This is Kent's favorite
Quite a number of changes for just a one year and final run of the 300D 300CD 300TD 300SD
You can do it with magnets!
A real problem when changing an engine or the rubber mounts
4 key performance related issues to consider. Do proper troubleshooting first BEFORE buying parts
Summary list of the most common causes and parts needed to fix them Part 2 of 5
It will require the removal of the serpentine belt
We have a special kit with complete instructions so you can fix it yourself.
How to get the frozen nuts off and the stud back in safely
Most often this can be done without special tools using a helper and a heavy hammer
When you engine wears out - look seriously at swapping in a different engine
This is normally not due to "leaking seals" inside the turbo charger
Steps to diagnose and repair it before it becomes a MAJOR problem. Steps to fix it after it does!
Failure to do preventative maintenance could lead to some very expensive repairs
There are ways to reduce it - and we have ways to fix it!
The key is in using the right products and techniques. Let Kent show you how.
Here is a temporary fix until you get get the replacement parts
Using the right methods and products are the key to the amazing results
Can be frustrating and a little mysterious if you have not done it before
Can be problematic without using the correct tools and techniques
Improper technique can break the mirror glass or permanently damage the ball socket
Procedure very similar from mid 1970's to mid 1990's
You can fix it yourself with our simple kit
Yes, for W107, W123. W126, W201 and W124 from 2phast Motorsports
Cleaning and proper lubrication can add years to your key tumbler and save you hundreds $$$
Only applies to certain models from 1984 to 1995. See list below
This is something you can easily fix yourself
Removing it, replacing it, lubricating it, replacing the glass with out breaking it - you can do it!
Get the right products and make a lasting repair yourself
If you don’t see the head of the bolt then you have to …
This can drive you crazy. Never assume anything. The leak may be coming from a place you would least expect
Find the real reason so you don't have to keep replacing them
The seat has to be able to move back and forth in order to remove it!
Care must be exercised to prevent damage to the steering lock mechanism
When all else fails check the wiring
Indoor lighting can be difficult. Kent has recently found the ultimate solution.
How to get the regulator out the door when this happens
There is a simple fix to keep those old sun visors up
Shake, side pull, binding, grabbing, grinding, squealing, overheating and soft / hard pedal issues.
Fixing brakes is not difficult and can save you hundreds
Efficient and affordable pressure bleeding, system flush and fluid capture is here for all.
Causes and cures for this common problem
If you are losing brake fluid the source must be found quickly
Must be done anytime you replace front brake rotors
After looking for years Kent has finally come up with the ideal no-spill fluid extractor
A good soft fender cover is the BEST solution!
Some simple maintenance could help to solve the problem
If over 15 years old then this is a must do job to prevent braking problems!
Some simple precautions can save a big mess and ease brake system bleeding
This is not to be taken lightly!
Can the problem really be solved? Kent has been on the hunt for a solution.
Don't be too hasty to buy a new one
There are some signs that will let you know your calipers are locking up.
Know what to look for and understand the parts you will need
Inspect the tie rod ends first for wear
Very very common on those chassis with over 150,000 miles
If you have a Mercedes station wagon and want to use it to haul loads best to fix it right
It is possible to test their condition on the car
On most models 1973 to 1991 trailing arms can collapse leading to dangerous consequences
Not as hard or expensive as you might think. And yes, you can do it yourself!
Here is what you have to deal with when owning this brute
The odometer can lie. Don't be fooled and make an expensive mistake!
Sometimes you can only do it with our special tool - a few occasions you have to drop the rear of the tranny
123 and 126 Chassis Owner's Alert
Tips on how to make the gloves last longer!
This happens often enough you need to know the options available for repair
Alert! Check yours before experiencing a dangerous suspension failure
It could be a number of things including shock absorbers
Suspect front wheel bearings
It may take a special tool
Failure to replace the donuts could leave your exhaust dragging on the ground!
This is what Kent uses and you can build it yourself!
Kent shows some of the initial things he had to do to his own 1987 300SDL
This can be frustrating without the right tool. Yes, there is a tool!
Body and Exterior Trim Problems
The panel must be removed to properly repair and/or lubricate the tilting arm mechanism.
Nothing like a good smooth working power or manually operated non tilting sunroof (up to 1985)!
A true challenge - but you can do it with the right knowledge.
It can be restored but it takes a special power tool and hard work
Be careful or you could end up losing big time
Regular cleaning and lubrication is the key to long life
If is seems too good to be true - then in this case it is true!
They are ugly when deteriorated - beautiful when replaced properly!
We have resources to help you fix both power and manual sunroofs yourself
Easy to round out the hex head bolts - then what do you do ?? !!!
Stop it BEFORE bubbles in the paint and holes start to appear!
Be sure to look UNDER the trunk seal - you might be surprised!
Kent believes there is no one correct answer. Just too many options...lol
Failure is almost always caused by corrosion due to high moisture environment and lack of lubrication
Until you have driven one it is hard to explain
There is one amazing product Kent recently found that polishes it all!
It is a little tricky and very easy to damage it.
Both are repairable by the DIY mechanic with the right knowledge and supplies.
There is a way to do it without damaging anything on many older models
This one has just the right combination of benefits
Most in this list are avoided due to cost - Fix them yourself with our kits and save hundreds $$$.
Fix it before it leads to major failure! Exhaust muffler found dead on road...
The best way to save money is to buy the right car in the first place
Start with something you can do yourself that is not super difficult and gives dramatic results.
It could be that you installed in upside down
It is simple to clean out the hole and adjust it with the right "tool."
On 1973 to 1985 models this has to be done with care to prevent damage
The right tool can do the job without damage
Anyone want to guess what the secret is???
Knowing what to look for will help you decide if replacement is needed
When using contact cement you have one shot to get it right! Kent's video will show you how to prevent mistakes.
Tired of seeing little gaps show up?
You can do this in your own driveway with minimal tools and experience
Put the body filler on in two phases and manage the time when you grate and sand it
In most cases it is a two step process - especially if your paint is faded.
My sunroof motor does not run or it runs but the cable does not move
This covers most models with electric sunroofs from 1986 to 1995
W124 Chassis procedure shown here but applies to many models
Kent recently discovered one product that shines above all the rest
2 Primary reasons these hood hinge assemblies fail
You don't have to use expensive spray equipment or 2 part expensive primer
If caught early enough they can be easily fix permanently with Miracle Paint
Depending on where the damage is you can do amazing things with jacks and hammers.
Just take a break!
Nothing is better than a good thick fender cover
Location of the three digit numerical code and translation here
Kent shares three of his favorites
This can sometimes be a real challenge if you do not know where to look
It could be coming from a number of places for a number of reasons
Fuel Delivery Problems
You will need a bench mount pressure release tester to do this yourself.
The sources of fuel leaks and procedures needed to repair them are many
A plugged filter inside your fuel tank can lead to hard starting and power loss
Major cause of sudden loss of power
A unique special tool so affordable every diesel owner should have one
Begin with the "back end" fuel delivery system first.
Fuel pump, filter and related components most likely will need your attention on 25+ year old Mercedes
Fuel Line and Transmission Cooler Line Leak Prevention
This can be a frustrating challenge without the right tools.
These are signs your turbo over boost protection system is not working properly
Here are some ways to inspect for and prevent algae growth
Try to do this without spilling fuel on your car and all over the ground!
You need to look no further than the precision nozzles produced by Monark of Germany
More common than you think and easy to fix with right tools
Already done filters, injectors, tuning and still want more power - there is one more thing you could do.
Here are some things you should look out for!
How to make your own in a pinch
You will be amazed how well this works!
Common fuel leak problem but repair must be approached with care
Find the source and fix immediately to avoid an engine fire!
Sometimes it can be something quite simple - other times not...
Some will need to be "back flushed"
Fix at first sign of wetness under car - BEFORE total failure
Must read info BEFORE you rebuild your injector nozzles
This important device is not immune to problems as the older diesel engines age!
Most owners forget about the fuel injectors - Cap, rotor, wires and plugs may not be enough
This one you definitely do not want to ignore!
Learn how this works so well and how you can do it yourself
Depends a lot on the climate and how the car was stored but you should always begin with new fuel and filters
With the right tools and procedure you can get precise results yourself
The fuel from the injection pump can be shut off by following this tip:
This is a very common problem on the 602 and 603 diesel engines
How do you know if they are bad? If they have not been recently rebuilt they probably are!!!
Applies to all 200D 220D 240D 300D 300CD 300TD 300SD 190D 300SDL 350SD and 350SDL
Lack of attention here will leave you stranded on the road!
If you know your glow plugs are working properly it could be a fuel pressure issue
You have to be sure all air is removed from the fuel lines and hoses
Very important for cars over 20 years old.
Here is an option to replace the pre-glow factory unit with a reliable manual controlled relay
One of the most common problems we see on older Mercedes.
Unknown battery drain, electrical shorts, blown fuses - these can be difficult to isolate!
Installing H4 headlight upgrades will make a difference between night and day
Common to all 126 sedans 1981 to 1991 - you hear the motor mechanism running but glass is not moving or it's binding
Do proper testing BEFORE ordering parts or removing door panel
You have a couple options to keep the battery alive!
Do proper testing BEFORE ordering parts or removing door panel
If it is happening on a regular basis it probably is not bad glow plugs
Kent recommends just sending it out for professional repair
It just may not be wired properly. Most likely it is NOT the antenna.
If you are constantly having to replace glow plugs do not immediately blame the plugs! Ream the carbon!
We share with you the factory instructions for most models from the late 1970's to late 1980's
Neglect is probably the No. 1 Cause of your Benz not starting
There is a quick fix as well as a more permanent repair
Isolate the source of the short to finally solve your problem
Kent will show you some quick checks to test operation
This is one of Kent’s favorite tools to have around the shop
If the wiring plug falls apart on you, you won't know what coded wires go where!!!
Don't let anyone kid you... this is not an easy job!
It is possible to do this but you have to cut the black cap off first.
You can do it with commercial products or something in the cupboard
This is a sure sign your electrical switch is going bad
You will need a wire schematic to figure out which wires go into which holes
Corrosion on the contacts can cause all kinds of electrical problems
Do not assume it is just a bad battery! Diagnose first...
Not as easy as it looks and easy to break if you don't know the proper tricks
Knowing what fuse does what is a must when troubleshooting electrical problems
Some chargers won't start the charge cycle without some help
Originals are hard to fix and not available new - Universal new antenna may be best option
Yes, they do need service if you want them to last.
This could be caused by one or even a combination of three things.
Burned out glow plugs, bad pre glow relay, blown fuse, wiring - all need to be tested
We are getting too many emails like this usually after parts are bought somewhere else
You CAN do this yourself if you have the right information and equipment!
Proper diagnosis is priority one - then repair! DIY testing and repair kits available.
Some leaks are not difficult to fix. Others require removal of the transmission
You might be surprised at just how many problems and failures could be avoided with periodic and proper lubrication
Be careful to not let someone sell you a rebuilt transmission!
New bushings will solve the problem and possibly prevent disaster
Often caused by loose fittings and engine vibration
Watch the video and Kent will explain his recommendations.
Minor frustration for most of us who service our own transmissions
A medium frustration for most of us who service our own transmissions
Both problems require removal and it can be a little "tricky"
Be Kind to Your Transmission Pan Gasket!
Find the actual source of the leak before jumping to conclusions
A major frustration for most of us who service our own transmissions
Get a good light and get under the car.
Care must be exercised to prevent damage or premature failure
This can leave you stranded if not caught early enough
There is a proper way to do this to determine proper level inside transmission
If you could just figure out what is wrong you know you could fix it!
How to improve performance and prolong the life of a tired gas or diesel automatic transmission
Rust / Corrosion Problems
Yes there is! Miracle Paint and fiberglass cloth can work miracles.
Not always the best solution as you will see here.
Easy preventative maintenance you should do at least every six months... unless you live in the desert..:-)
You have to keep the air away from it
It is all about prevention. Remember rust never sleeps!
It works on any type of rust - on any iron based metal - on any vehicle or part
Sometimes You Just Need to Go Have Some Fun!
Driveline and rear end Problems
The Differentials are very rugged. It is the associated parts that usually fail due to age and high mileage
Start with inspection and replace at first signs of wear to prevent expensive damage to transmission
If the axle joints are still good new boots are sometimes a good solution
Sign of worn part when driving over rough ground
Knowing your rear suspension design and theory will help troubleshoot a problem
Nothing like having the right tool
Best way to test them is out of the car on the bench
When troubleshooting your vacuum system you must know where the hoses and lines go
Different from the 116 / 123 chassis and more difficult to troubleshoot
If the hoses are leaking or are not hooked up properly a number of problems could occur.
Common concern on 1980 to 1985 Mercedes Diesel 240D, 300D, 300CD, 300TD
Double check for damage and use a product to scare them away
Pump mechanisms breaking apart and piston bolt failures
Look for the cause in the drive mechanism
SVO / Biodiesel Problems
We offer an easy to install kit or you can build one from our components
Questions and answers to help you decide if this is right for your diesel
The pros, cons, effort, and expense of running your Mercedes Diesel on waste vegetable oil
Here are some tips to considering when putting together your own conversion
Mercedes diesel engines are the only ones well suited for one tank operations
List of possible causes and remedies for hard starting and loss of power
Climate Control Problems
A common problem on all models. Options for repairing it yourself and saving big $$$.
Applies to late 123 and 107 chassis and all 126 chassis 1981 to 1991
These really get neglected and they are easy DIY
If your dash is not lighting up at night it could be a number of problems
Sometimes the fix can be real simple and real cheap.
Get rid of and change that ugly head light door yourself. What a difference!!
Tail lights we are talking all models from 1960s to Mid 1990's - Fog lights only on those with removable lenses.
This can happen on a number of models for a number of reasons