Can you drive with no EGR valve?

Can you drive with no EGR valve?

As per my research and going through the threads on EGR valves its OK to run without EGR. Yes it might affect the environment but no harm to engine as such. there are people who are running without EGR for more than 50k km. As time goes by, the EGR valve may cause certain malfunctions in your diesel vehicle.

What to do if your EGR valve is faulty?

If you are suspicious the your EGR valve may be faulty, at M B Jarvie Ltd we can carry out a diagnostic check on your vehicle’s EGR valve and confirm if it is operating within specification. With the addition of EGR valve coolers in recent years, there is the potential for engine coolant to leak into the exhaust gasses and into the engine.

What are the symptoms of a bad EGR vacuum modulator?

Any issues with it can cause the system to malfunction, which can lead to increased emissions and other problems. Usually a bad or failing EGR vacuum modulator will produce a few symptoms that can alert the driver of a potential problem that should be serviced.

Where is the vacuum diaphragm on an EGR valve?

The hose connects the top of the valve to the throttle body or carburetor. The valve’s metal disk houses a vacuum diaphragm, spring, and plunger. Later models come equipped with electronic-vacuum EGR valves inside a small block or cylinder.

Which is the last development of the EGR valve system?

The EGR valve itself must repond quickly to the demands of the engine management programme; must be resistant to high temperatures and be able to operate in a hositle environment. The lastest development to be tacked on to the EGR valve system is the EGRE valve cooler.

When do you know you have a bad EGR valve?

In case you reside in a state that requires you to test for emissions every six months, you might realize that you have a faulty EGR valve when you fail the test. You might not be alerted of the EGR problem during the trial, but it is something to watch out for right away.

How to test an EGR valve with a hand mirror?

As you do this, watch the valve diaphragm movement. Use a small hand mirror for this, if necessary. If the stem or diaphragm doesn’t move, disconnect the thin vacuum hose from the top of the valve. Place your finger on the opening of the vacuum hose you just disconnected. Increase engine rpm again as you did in the previous step.

Can a vacuum be used to open an EGR valve?

A vacuum-operated EGR valve is usually only found in older vehicles. It is a straightforward system which utilises a vacuum to switch the EGR valve from closed to open. The vacuum is often regulated by a computer-controlled solenoid.

What does a check engine light mean on an EGR solenoid?

Check Engine Light comes on. An illuminated Check Engine Light is another symptom of a bad or failing EGR control solenoid. If the computer detects an issue with the EGR solenoid, circuit, or system, it will set off the Check Engine Light to notify the driver of the issue. A bad EGR solenoid can cause a variety of different trouble codes,…