Kent's procedure uses the factory recommended "drip tube method" but with a "twist." He has devised a way to get accurate and consistant IP timing results while trying to get the drip tube to drip at one drip per second exactly when it should!
Search | Fuel Delivery
This kit will allow you to remove your old fuel warmer and completely bypass it with the parts and instructions you will receive in this kit.
Mercedes installed small fuel warmers on these engines using engine coolant to warm up the fuel just before it enters the injection pump. The idea is great - especially in cold climates, but in moderate and warmer climates it is probably not needed.
While working on the fuel injectors of a 240D this week, Kent finally decided he had had enough. After 20 years of fighting those fuel injector return hoses he decided he just had to come up with a tool to make the job easier. 2 hours later the tool was designed and the prototype made.
Any time you are removing and replacing your fuel injectors you will need to change the return hose and the heat shield crush washers. If you don’t, you will have leaking hoses and possible compression leaks at the injector nozzles.
These fuel injectors do wear out and there is no way to rebuild them. They can be tested and cleaned using Kent's special tester. See related products below. Many time cleaning will bring them back to acceptable performance. Best to know for sure before buying 6 new ones.
These early “short style” electric fuel pumps are very prone to leaking fuel because the rubber lower case seals harden with age. New pumps are $650 to $750 and if you risk buying a used one it will probably ending up leaking or seeping fuel too.
MFI (mechanical fuel injection) fuel pumps are notorious for leaking fuel. Leaks are almost always due to age hardened and deformed o-rings inside the pump. Taking the pump off the car, taking it apart, cleaning it and installing new seals will almost always solve the fuel leak problems.
Kent has never seen fresh fuel hoses on all the old MFI Mercedes he has worked on over the years. They only seem to get changed when they start leaking. Leaking fuel hoses at the electric fuel pump is a fire hazard!
Leaking fuel injector pumps have become a very common problem in the 60x. engines produced from the mid 1980s to the mid 1990s. The early 60x.
Most owners do not have a big enough hex wrench to remove the fuel tank screen on those models that had the fuel tank right under the rear trunk floor. But the screen does need to be removed, inspected and cleaned due to the age of these cars.
For most Mechanical Fuel Injected Mercedes Gas Engines 1959 to 1972.
Would you like to find out how well your old (1959 to 1972) mechancial gasoline fuel injectors are working? Now you can do it yourself at home with our custom bench mount hand pump pressure tester and cleaning kit. These are the full instructions that come FREE with the kit.
If your fuel level gauge is not reading accurately or the needle jumps around and or your car’s low fuel warning light does not comes on, it is usually a problem with the tubular sending unit in the fuel tank.
Kent uses his 1976 240D that had sat idle for 6 years to demonstrate what needs to be done to get an old fuel system cleaned out and serviced properly. This always includes installing new fuel filters and sometimes will require replacing some of the rubber hoses.
PLEASE NOTE: This tank has to ship oversize and it is very expensive to ship across the county. The shipping amount in checkout may not be accurate. You will be charged exact shipping. If you are on the east cost recommend you contact us first for shipping to your address.
Excellent used set of fuel injector hard lines as shown. The fourth injector line was removed and the clamps were lost. You can use you other clamps or we sell the clamps separately. Some bending of the lines is usually always required when installing and that is ok.
This is a common occurrence as these gas engines with Bosch C.I.S. fuel injection age. Most of them are now at least 20 + years old. The problem goes something like this. You start the engine cold and it will hardly run. It runs rough and idles very low and will even quit a few times.
If you think CIS fuel injectors can just be ignored, think again. Sure, your gas engine will continue to start and run “ok”, but you may find that it is not producing the power it once did nor the fuel mileage it once delivered.
Brand new Bosch Fuel Injector as shown. This is the later style with the smaller threads. It will only fit the models listed below with CIS fuel injection. How do you know if you have CIS? If you have hard metal fuel lines going to your injectors with no wires you have CIS.
Works on all models from 1977 to 1993 with the Bosch C.I.S Fuel Injection system - see models listed below
The timing device installed in the W115, W116, W123 and early W126 with OM615, OM616, and OM617 engines from 1986 to 1985 is somewhat a mystery to many owners.
If you are new to older Mercedes diesels and have not worked on them before, this is one of the first things you want to learn. Especially if you ever run out of fuel. Without knowing how to do this you will never get the engine started again!
Fixing a Key Source of Fuel Leaks on Your Fuel Injected Late 80’s Early 90’s Engine - On Demand Video
If you smell fuel inside your engine compartment you need to find the source of the leak and fix it IMMEDIATELY. I think we have all personally seen or seen pictures of those cars with the engine burning on the side of the road. Yes, usually caused by a fuel leak close to the engine!!!
For all MBZ diesel engines 1950 to 1993.
Keeping your injectors clean and tuned is one of the best ways you can improve mileage in a diesel. Buy both Kents new manual Diesel Fuel Injector Cleaning and Testing Procedures and his Top Brass Custom Cleaning Tool Kit and save!
Fits the following: These nozzles fit ONLY 1986 to 1989 201 Chassis 5 CYLINDER 190D 2.5 Turbo and NON-Turbo. This is the critical inside wear part of the injector that delivers the fuel spray into the cylinder. These are direct replacement nozzles for your factory Bosch Fuel Injectors.
Fits the following: 1990-1993 300D 2.5 Turbo 5 Cylinder. This is the critical inside wear part of the injector that delivers the fuel spray into the cylinder. These are direct replacement nozzles for your factory Bosch Fuel Injectors.
FITS all 116 123 Diesel and Gasoline, and 126 chassis from 1977 to 1985. Finally a socket to remove your fuel tank screen that really works. Most correct size sockets tend to be SO BIG that they require 3/4 inch drive ratchets and extensions to use them. Who has those in their tool box??
When it comes to cleaning diesel fuel injectors, and yes they do need periodic cleaning, there is nothing like having the right tools to do the job.
This is the best tool to use when installing or removing the Monark hand primer pump. PLEASE NOTE. This is 19mm and will NOT work on the Bosch hand primer pump or other style pumps (most others are 17 mm).
This is a brand new Genuine Mercedes check valve for the fuel injection pump on 4 and 5 cylinder diesels 1977 to 1985. This valve is mounted on inside of pump in the fuel line going to the filter.
This 24 minute on demand training video comes with our injector back flush cleaning kit. You can purchase this video separately, but please keep in mind you will not have any of the tools or supplies to complete this procedure yourself.
With these old gas fuel injectors, sometimes you just have to "back flush" the insides to restore them to peak performance. There is no guarantee that back flush cleaning will restore every old gasoline mechanical fuel injector. Some are just plain worn out.
This fuel tank was installed in a W123 240D and used to hold waste cooking oil for fuel. It was used approximately 5 years before removal. It has a built in coolant based heater that can warm to vegetalbe oil from engine coolant.
These early “short style” electric fuel pumps are very prone to leaking fuel because the rubber case o-ring seals harden with age. New pumps are no longer available and rebuilt are over $1000! If you risk buying a used one it will probably end up leaking or seeping fuel too.
This 28 minute on demand video manual will take you through the step-by-step procedure for taking the upper (motor section) of a short MFI fuel pump apart and replacing three o-rings that are prone to hardening and leaking fuel.
This video is included free with the purchase of our check valve overhaul kit. Please see related products below
This is something many owner's and mechanics miss. That little check valve on the side of the injection pump can cause a lot of starting problems on the older diesels.
When any part of the overboost protection system fails, your turbo diesel engine can lose power or start to smoke too much.
Want to get more power our of your 5 cylinder OM617 turbo diesel? Maybe you will like to reduce the dark smoke coming out the tail pipe during heavy acceleration?
Total Run Time: 8:01
Here is a wrench I should have made 15+ years ago. I can not believe how much time and frustration I would have saved over the years working on all those 100's of Mercedes diesel engines if I would have done it!
This clear 16 oz. bottle and hose is the safest way to test of clean your older gas and diesel injectors by not having to breathe the harmful fumes produced by the fine mist spray. NOTE: This only works for mechanical fuel injectors. It is not intended for electrically operated fuel injectors.
The FLOW pressure method can be used to both check and set injection pump timing. Personally, Kent likes to use this method only when checking if the I.P. needs adjustment.
The FLOW or low pressure method of checking and adjusting injection pump timing does not require a separate pressure tank. With this method you use the hand primer pump to pump up pressure in the injection pump to get fuel to flow out of the half round drip tube included in this kit.
Of all the “chop cutters” I have used over the years this one is the BEST. This is must have tool for the DIY mechanic.
If you have had to remove any of the banjo bolts you can see that those sealing rings are getting quite old... when you see scoring in the ring the ring appears to be crushed, they should be replaced to prevent leaks and to prevent air from getting into the fuel lines.
Good used injector housing for parts or for rebuilding. Does NOT include the nozzle. This is a core part only and will not work in the engine without new nozzle installed.
This is a collection of SPECIAL tools Kent has put together to help you grab, twist, and pull on things in and around your Mercedes. He makes each one of these tools right here in his shop.