Can fuel injectors be calibrated?
Injectors that don’t deliver the specified flow rate may be calibrated or swapped for ones that do meet the specification. the fuel injector is not necessarily to be calibrated, it can be replaced with an new one if it is damaged, one condition that users do not care how much money to be paid for replacing a new one.
What is calibration of injector?
The calibration is used to find the smallest energizing time necessary for fuel injection, also called Zero Fuel Calibration (ZFC). This chapter is of importance for fully understanding the problemat- ics of injector calibration out of in-cylinder pressure and the complexity of the combustion.
What is fuel injection calibration?
Calibrating fuel injectors are intended to simulate closely the function of fuel injectors in the fuel injection system of a diesel (compression-ignition) engine. Injection pumps for emission-controlled engines require a new generation of calibrating injectors in order to comply with the higher injection pressures.
Is fuel injector the same as fuel pump?
A fuel pump pressurizes fuel and sends it through the fuel line to the fuel injectors. The fuel injectors atomize the pressurized fuel and inject it into the combustion chamber.
Why do we need to calibrate a fuel injection pump?
CALIBRATION OF FUEL INJECTION PUMP It is important that an equal amount of fuel is delivered to each engine cylinder and at the correct time Pumps are checked for leaks, tested & calibrated to assure proper delivery and performance.
What does zero quantity calibration mean?
Zero quantity calibration. In order to counteract the change in the injection. quantity, the actuation duration of the fuel injectors. can be corrected via zero quantity calibration.
How do you remove a fuel injector in a Mercedes?
1. Remove the fuel injector hard lines with the 17mm open end. Depending on the body of your wrench you will have to tilt the wrench at an angle to break it loose. Keep the lines together as a set and place them in a clean area.
What kind of fuel injection does Mercedes use?
Mercedes suggests that special tools are required to adjust the mixture on the Bosch KE3-Jetronic (CIS-E) fuel injection, such as is used on the 1988-91 560 series motors. The dedicated shade tree mechanic cando it, but needs to be well-informed first.
What should the torque be on a Mercedes injector?
While the actual MB recommended spec for tightening the hold down clamp bolt is 7Nm plus 90 degrees, plus 90 degrees – 7Nm plus 90 degrees will provide a safer torque to yield on a new bolt in an old head.
How long does it take to clean a Mercedes Benz injector?
Step by step guide on how to clean a Vehicles Injectors. The clean is run in line and takes just over 45 minutes. The blocked injector is cleared and restored to fully working condition at a fraction of the cost if you were to replace them. A link to the Tunap injector machine – http://www.tunap.co.uk/Products/INJEC…
While the actual MB recommended spec for tightening the hold down clamp bolt is 7Nm plus 90 degrees, plus 90 degrees – 7Nm plus 90 degrees will provide a safer torque to yield on a new bolt in an old head.
What should I do if my Mercedes injector is not working?
Once identified the work can begin – Run the engine until nice and warm then turn it off and remove the keys. Remove the turbo supply hose to the inlet manifold and split the composite intake manifold by removing the pins that secure it to the lower section.
What to use to clean Mercedes diesel injector seat?
Use a torch to inspect the injector seat in the cylinder head, it will likely be blackened and carbonised, this needs to be cleaned off and in severe cases re-cut to present a perfect sealing surface. I have in the past had great success using a wooden dowel, rather like the ones used on a valve grinding hand tool.
Is there a Mercedes diesel injector for sprinter?
“Here at the Global Sprinter Research Center I am always eager to investigate Sprinter related technical issues.
Who makes the best injectors for 6.7 Cummins?
Bosch Injector
From our experience in the diesel repair and performance industry we feel that the best injector you can purchase for your 6.7L Cummins is the Genuine Bosch Injector.
What happens if my injectors are too big?
Bigger injectors on their own will just increase fuel usage, make the engine run rich, which leads to running problems – it won’t tickover, it won’t pull cleanly through the rev range and you’ll risk major damage through ‘bore wash’ – where the fuel literally washes the oil away.
Are there any issues with the Cummins QSM11 engine?
Props were serviced /prop scanned at 1020 hours and have not hit anything, no vibration at any RPM. Both engines are running well at RPM’s less than WOT, although the starboard side is running a little hotter and burns about 1-2 GPH more.
Can a 6.7 Cummins injector not be calibrated?
Ive only heard of this happening once with a 6.7, and when it did it was very noticeable on startup. Normally if an injector doesn’t like a code, most will just enter one of the other codes in its place and it will then run fine.
What kind of calibration tool does Cummins use?
Insight is the tool that Cummins uses for interfacing with their ECMs. Thanks guys, have any of you used autoenginuity to set trim/calibration codes for the 6.7?
How are valves and injectors adjusted on a Cummins?
One pair of valves and one injector are adjusted at each pulley index mark before rotating the accessory drive to the next index mark. Two crankshaft revolutions are required to adjust all the valves and injectors. Ask Your Own Heavy Equipment Question Customerreply replied 9 years ago