How to Clean Mechanical EGR Valve

Since the 1960s, vehicle manufacturers have installed Exhaust Gas Recirculation (EGR) valves to reduce nitrous oxide (NOX) emissions. The EGR valve recirculates a small amount of exhaust into the combustion cycle. The warmth of the exhaust lets the combustion chambers warm up quickly, while the spent, inert gases keep the chambers from getting too hot when the engine fully warms up. Whether mechanical or electronic, EGR valves open and close to control the gas flow. If left open, the excess vacuum will cause the engine to act like it wants to stall, idling roughly or surging. If the valve stays closed, detonation could occur in the combustion chambers; this knocking or pinging will lower mileage and the lifespan of the engine. To smooth a rough idle, or hesitant or surging acceleration, and reduce knocking, clean your EGR valve.

Clean and inspect the vacuum hose. Remove the vacuum hose and inspect closely for wear (cracks or weak spots), then clean out the carbon deposits either with a spray can of carburetor cleaner or with a pipe cleaner if the deposits are hardened or compacted.

Inspect the EGR valve for damage.

Loosen any bolts fastening the EGR valve to the engine. Inspect the gasket lining the bottom plate of the valve. If it's not frayed or cracked, you can reuse it.

Clean the return tube and gas entry port. Use carburetor cleaner and a small-bristled brush like a wire brush, toothbrush or pipe cleaner to clean off the carbon from the metal exhaust gas return tube and the gas entry port on the valve (usually the smaller hole with a spring-loaded pin, or “pintle”).

If there is a lot of carbon build up around the EGR valve, you may also want to just save yourself some time and replace it with a new one.

Clean out the entry port. The entry port is where the valve tubes connect to the engine (usually the intake manifold) while the EGR valve is off.

Reinstall the EGR valve.

Check to ensure the vacuum diaphragm moves freely, reinstall the EGR valve and reattach the exhaust return and vacuum hoses.

Primjedbe

Popularni postovi s ovog bloga

Transverse Vs Longitudinal Engines: The Pros And Cons

The way in which an engine is orientated can have a huge influence on the rest of a car’s design. Should the car be rear-wheel drive? What size of engine is expected? Are there space issues that could influence which way the engine lies? All these questions have to be answered by the engineers responsible for the car, as the powertrain setup can have a large impact on how the car goes, handles and stops. Looking at front-engined cars, the two possible orientations are longitudinal and transverse, with each having its own benefits and drawbacks that can govern which is chosen for the car at hand. In-light of this engineering decision, here’s a basic guide to the features of each engine layout and which is best for different applications. Transverse engines Transverse engines are mounted perpendicularly to the direction of travel, lying horizontally within the engine bay. This is predominantly used in front-engined, front-wheel drive setups but has also been implemented i

Pročitajte više

How Twin-clutch Transmission Works (DSG)

The dual-clutch transmission, also known as the Direct Shift Gearbox (DSG) or twin-clutch transmission, is an automated transmission that can change gears faster than any other geared transmission. Dual clutch transmissions deliver more power and better control than conventional automatic transmission and faster performance than manual transmission. Originally marketed by Volkswagen as the DSG and Audi as the S-Tronic, dual-clutch transmissions are now offered by several automakers, including Ford, Mitsubishi, Smart, Hyundai and Porsche. DRIVING A CAR WITH A TWIN-CLUTCH / DSG TRANSMISSION. Twin-clutch equipped cars do not have a clutch pedal; the clutch is engaged and disengaged automatically. The twin-clutch transmissions bridge uses an automatic-style shift selector with a traditional P-R-N-D or P-R-N-D-S (Sport) shift pattern. In "Drive" or "Sport" mode, the dual-clutch transmission operates as a regular automatic. In "Drive" mode, the transmission

Pročitajte više

VolksWagen Jetta Mk4 Custom Coupe 4Motion R32 Twin Turbo Build Project.

VolksWagen Jetta Mk4 Custom Coupe 4 Motion R32 Turbo Build Project He and his mates were out hooning in a borrowed MK4 R32, when they hit a 30-mph corner at 100 mph. They survived, the R32 did not. But the 4Motion lives on in a MK4 Jetta coupe. You heard right. The ol' Waterfest/H20/Motorstadt crowd may recall 1552 Design's Project X, which the shop chopped a Jetta sedan into the coupe many wished VW would build. This Kiwi project employs the guts from that lost R32—the carcass of which the builder acquired from the previous owner—in the service of a Mk4 Jetta Coupe 4 Motion R32 Turbo build. A noble effort indeed. As Builder explains, to build a MK4 Jetta coupe, you must take the doors from a Golf three-door hatch (they're longer), move the B-pillar to accommodate the new portals, "then fill in the gap between the door and the rear quarter panel." Easy. ----------------------------------------------------- This video purpose is to tell world about amazin

Pročitajte više

All Abouth Cars

Pretraži ovaj blog