Direct injection valve cleaning

Direct injection engine deposits create a unique problem. Direct - injection technology is designed to squeeze more mpg out of cars. It has actually been delivering , but the technology can lead to more time in the repair shop. See tool details on next page.

Remove dirty solution with Mityvac or similar vacuum tool. Be sure valves are in closed position. NOTE: Do not overfill or allow product to reach valve.

GDI is new technology that maximizes power and fuel economy allowing a smaller, lighter engine to provide the same or better performance as larger ones. Cars with direct injection turbo engines get dirtier injectors and intake valves. It recently needed the intake valves. The direct injection does not allow for the fuel and its detergent additives to clean the valve and the port. The carbon build-up is the reason for the misfire (rough running engine).

This signals the check or service engine light to come on, letting the driver know there is an issue with their engine’s performance. What is Direct Injection.

Instead of delivering the fuel via an injector in the intake track before the intake valve , GDI or gasoline direct injected engines inject a very fine mist of fuel directly in to the combustion chamber hence the name Direct Injection. Alternatively, a valve cleaning mode can be performed for some cylinders (or a single cylinder), while remaining cylinders carry out unmodified valve timing and fuel injection. Further, valve cleaning operation can be sequentially performed for each cylinder separately, if desired. In this way, any transients created by valve cleaning can be. Sticky, heavy deposits build rapidly on the backs of valves and in air intake systems.

Some direct - injection vehicles with variable valve timing can expose the valve to combustion byproducts as the valves adjust, which creates a scavenging effect to either pull or leave behind a small amount of exhaust gases in the chamber to control NOX emissions. Prior to direct injection , fuel was injected upstream of the intake valve in the cylinder head port (called port injection ), mixing as the fuel and air went past the intake valve into the cylinder. With port injection , the fuel would clean the intake valve of deposits and varnish. Direct -injected engines have an even higher rate of intake valve carbon buildup due to the fact that fuel never washes over the back of the valve to help clean the deposits. Direct Injection Kit is designed specifically for GDI engines to clean the back of the intake valve and entire fuel system!

The Engine Model is a MZR L3-VDT 2. L DISI Turbo direct injection DOHC 16- valve four-cylinder engine. Intake valve cooler than exhaust, so diffferent deposits. The advantages of GDI have led to it being used by most modern vehicle manufacturers. Cleaning intake valves on direct injection.

Unfortunately, it has one major flaw: carbon buildup. Older port-style injectors sprayed fuel into the intake manifold. This jet of fuel came from behind the valve , and it actually served to wash away. With the nozzle valve still close insert the.

We see quite a few Mini Coopers with direct injection engines that have carbon build-up on the intake valves. While direct injection engines do offer enhanced fuel performance and cleaner emissions, these engines are more likely to have an issue with carbon build up on the intake valves. Valve -gunk buildup is a by-product of direct - injection engines,” says John Stoian, Director of After Sales at Kia.

The extent of valve buildup varies from one vehicle to another, and can be attributed to various factors, one of which is fuel quality. Theoretically it can be done by adjusting spark and valve timing. After new manifold was replaced caused by the carbon build up and unauthorized cleaning of the direct fuel injection design flaw which can also be found in Audi 2. T Turbo engine I had my regularly scheduled oil change done.

In order to avoid removing the cylinder head for cleaning , a system has been devised to clean the intake valves on the car. Removing the cylinder heads and doing a valve job. Drivers may hear the self- cleaning taking. Toyota advances its D-4S port- and direct - injection system with the technology’s installation in the new Tacoma midsize pickup. For intake valve cleaning , use either the Gumout Direct Injection Intake Valve Cleaner aerosol sprayed past the throttle body or use Gumout Multi-System Tune-Up through the vacuum intake system.

These methods deliver an undilute full strength dose of cleaning agents to the intake valves and ports. Our kit is versatile enough to be used in a variety of direct injected (DI) applications and alleviates many of the pain points associated with cleaning your intake valves. STP Direct Injection Fuel Injector Cleaner is a PEA based high performance formula scientifically engineered to dissolve hardened deposits that accumulate on injectors in vehicles with Direct Injection systems.

Without cleaning , deposits can lead to hard starts, lost acceleration and rough idling. VIDEO: Tips For A Leak-Free EGR Valve Gasket Installation. Direct Injection While oil build up can and does occur on intake valves, it is far more likely to happen inside the combustion chamber.

That is because the fuel injector typically sprays directly on the intake valve , cleaning it with gasoline (just like the Chevron commercial used to show you). Designed for direct fuel rail and injection cleaning. Gasoline direct injection (GDI) can cause carbon buildup problems. It differs from traditional multiport fuel injection (MFI)in several ways. First, the tip of the fuel injector is located right in the combustion chamber, so the injector is subjected to very high compression and combustion pressures.

INTAKE VALVE CLEANING FOR DIRECT INJECTION ENGINES (AKA Walnut Shell Blasting) Direct Injection engines are among the most innovative designs that greatly enhances vehicle efficiency, power and reliability. However, as with some good things they also have drawbacks. To eliminate the problem of intake valve deposits that plague current direct gasoline injection engines, the engineers at Mazda determined that deposits are formed when intake valve temperatures fall below 4degrees C. Measures were taken so that the intake valve would operate above this point to reduce deposit formation.

All of that carbon cleaning stuff works by dissolving the. There is a price to pay for the performance advantages of direct fuel injection !

Carbon issues with direct injection engines. How To Clean BMW NIntake Ports and Valves with Walnut Shells. Direct fuel injection allows automotive manufacturers to increase fuel mileage, power and efficiency.

If you own a BMW with a direct injection engine, carbon cleaning is a service that you will need sooner or later to maintain the health and cleanliness of your engine. It’s not just BMW using direct injection – most modern engines feature some version of direct injection , and notably Ford EcoBoost engines also employ the technology. This is an illustration of a classic Port Fuel Injection system. Notice that the fuel injector is mounted ahead of the intake valve. Instructions on the can say to spray into the intake while running, but I am not sure I would try that.

Direct Injection engines are suffering from very high levels of carbon deposits in the inlet manifolds, the inlet ports in the cylinder head and the inlet valves that control the flow of air into the combustion chamber.