A good dousing with throttle body cleaner may be enough to restore your EGR valve to near-mint condition, transforming a harsh idle into a soothing hum.
Q. What causes high NOx levels?
A: Oxides of nitrogen are created in high quantity when your engine’s combustion temperature rises above 2,500 degrees F. Engine control systems try to manage combustion temperature by maintaining a precise air-fuel ratio, proper ignition timing and sufficient engine cooling.
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Q. What causes high NOx and HC?
What causes high HC emissions? Excessive HC results from ignition misfire or misfire due to excessively lean or rich air/fuel mixtures.
Q. Can a bad EGR valve cause white smoke?
White Smoke – while that pesky Valve can cause an abundance of black smoke billowing from the pipes, a failing EGR Cooler actually emits white smoke, or steam, caused by evaporating coolant inside the cooler. When you see white smoke, call for help.
Q. What does an EGR valve delete do?
An EGR delete kit is an aftermarket performance part that removes the EGR valve and prevents exhaust from being redirected back to the engine. Ultimately, this allows your vehicle to function as if it never had an EGR valve. Soot deposited within the engine stresses the system and causes parts to wear down faster.
Q. Do EGR delete cables work?
Are a safe EGR Delete – They are safe as they need a fully operating system in order to work. Meaning that they cannot work when there is a fault in the system, being engines codes present. This is important as it means that the EGR Delete Module will not hide any engine codes that may be detrimental to your engine.
Q. Can I remove the EGR valve?
Technically speaking it is “illegal” to tamper either any emission control systems on a vehicle. For EGR valves this is a grey area as you car won’t fail its MOT with the device removed unless it causes the vehicle to emit more than the allowable emissions limit. …
Q. Why do some EGR blanking plates have a hole?
So why the hole? – On most new Common Rail Diesels the EGR system is closely monitored. Any attempt to reduce the EGR flow and Alarms go off for the computer. So you drill a hole in it.
Q. Is EGR cleaning necessary?
Since the EGR system recirculates a portion of exhaust gases, over time the valve can become clogged with carbon deposits that prevent it from operating properly. Clogged EGR valves can sometimes be cleaned, but replacement is necessary if the valve is faulty.
Q. Is EGR good or bad?
While emission controls are clearly a good thing, it isn’t clear if the EGR valve is causing more good than harm by burning off the trace amount of nitrogen oxides by simply burning more fuel. Furthermore, it may not be good for the the diesel engine itself. The first of which is, slightly worse fuel economy.
