What is a “dummy injector” used for?

They get used when drilling glow plugs or repairing glow plug seats, putting the combustion chamber under pressure to prevent metal shavings falling into it.

What is the principle of injector?

Working principle of a conventional fuel injector:



It lifts off its seat while spraying the diesel into the cylinder in highly atomized or mist form. The moment the pressure drops, the needle valve comes back to its seat, which causes the injection to stop. The injection nozzle has extremely critical tolerances.

What does an injector do in a diesel engine?

WHAT IS A DIESEL FUEL INJECTOR. Fuel injectors are the main players in this system. These pieces make sure that the engine is receiving the perfect amount of fuel in that moment. The injectors deliver the fuel as a fine mist into the cylinders.

What is the most common cause of injector failure?

Common causes of injector failure



While many things can cause breakdowns, the most likely cause of premature failure is fuel contamination. Fuel contamination occurs when debris in the fuel gets past the filtration, destroying the sealing surfaces.

What are the different types of fuel injectors?

The fuel injection types used in newer cars include four basic types:

  • Single-point or throttle body injection.
  • Port or multipoint fuel injection.
  • Sequential fuel injection.
  • Direct injection.


What is a lifting injector?

In a lifting injector, the parts are so designed that, in starting, a jet of steam passes through the combining tube at sufficient velocity to create a vacuum in the water-chamber XX, and the water is drawn into this place from the feed-pipe as if by the suction of a pump.

What causes black smoke in a diesel engine when accelerating?

Black smoke indicates that the fuel is not burned properly. The internal combustion process in diesel cars requires a certain mixture of fuel and air. The ratio of fuel and air should be proper, otherwise, the mixture will be too rich, which will result in black smoke. Faulty injectors.

What causes a knocking sound in a diesel engine?

Diesel knock is the clanking, rattling sound emitted from a running diesel engine. This noise is caused by the compression of air in the cylinders and the ignition of the fuel as it is injected into the cylinder. This is much the same as a gasoline engine suffering from pre-ignition or spark knocking.

What causes white smoke from a diesel engine?

White smoke often occurs when there is either too much fuel being injected into the combustion chamber, or not enough heat to burn the fuel. Un-burned fuel travels through the exhaust system & exits out the tailpipe which will produce a scent of rich, un-burnt diesel.

What is the best type of fuel injection?

Sequential Fuel injection



It remains idle for the rest of the steps. An ECU monitors the movement of cylinders and triggers the injectors only when required. The sequential fuel injection is the most effective and efficient of all the fuel injections systems currently available in the automotive industry.

What are the two basic types of fuel injection systems?

There are two basic types of fuel injection systems used on passenger cars and light trucks, multiport fuel injection and throttle body fuel injection. Because they provide lower emissions and more efficient operation, most vehicles today are equipped with multiport fuel injection systems.

Is there a difference in fuel injectors?

Nothing will have your engine running rough faster than the wrong choice of fuel injectors. Not only that, you risk ruining your engine altogether if you make the wrong decision. So it’s important to understand the factors you need to consider when deciding which fuel injectors are right for your setup.

Do fuel injectors increase HP?

The technical answer is yes; fuel injectors can add 10 extra horsepower at peak. However, for some car owners, that minimal difference does not offset the increased cost and complexity of switching to fuel injectors or upgrading the existing stock fuel injectors.

How do I choose a fuel injector?

Fuel Injectors are sized by their flow rate. Flow rate is a measurement of how much fuel can be delivered over time. It is listed in pounds per hour (lbs./hr.) or cubic centimeters per minute (cc/min.). The right size injector can supply enough fuel under full load conditions at an 80% duty cycle.

Will bigger fuel injectors increase power?

Larger throttle body and injectors



A larger high-performance throttle body will deliver more horsepower. Depending on what type of engine you have, you can gain as much as 10-20 more horsepower and comparable torque.

How can I make my engine run smoother?

So, to keep your car running smooth, make sure you have the following engine-related services done regularly:

  1. Change the oil.
  2. Change the oil filter, air filter and fuel filter.
  3. Check the PCV valve for proper operation.
  4. Check the spark plugs and spark plug wires.
  5. Very Hard – 10.5 and higher gpg.


How can I get more horsepower for free?

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Rate of the manifolds to get more power ideally to make more power. And you know in an organized manner you'd start from the back of the car and work your way forward so exhaust will be first.