How long does it take to close the EGR valve on a truck?
This takes about 15 seconds. It’s important the truck is turned off when disconnecting the cable because the butterfly value is in the closed position during this time (meaning, exhaust gasses are blocked from re-entering the engine). When the engine is on, the valve opens and closes as needed based on the inputs sent from the on-board computer.
When do you Know Your EGR is about to fail?
When Your EGR is about to fail, the most noticeable signs to look out for are: Rough Idling. This is when the EGR valve mechanism stays open when the engine is at a low RPM or idling (stopped at one space). The extra addition of exhaust gases will then cause the engine to go haywire. Fuel Detonation Noise.
Why is the EGR Valve Bad for your diesel engine?
So when you reintroduce exhaust back into the diesel engine, you are displacing fresh air that has more oxygen with exhaust gasses that don’t. As a result, the engine doesn’t burn the fuel as well because there is less oxygen. Second, diesel exhaust by its very nature has pollutants in it, including soot in the form of carbon.
Can a butterfly valve be removed without EGR?
However, exiting exhaust pressures on the the butterfly valve may cause it to open slightly, which may continually allow exhaust gasses into the engine. Therefore a complete removal of the EGR is the second option. An EGR Delete Kit can be purchased from just about any online performance parts shop (Google “ egr delete kit “).
What are the symptoms of a failing EGR valve?
What are the symptoms of a failing EGR valve? A faulty EGR valve can cause problems with the flow and operation of the EGR system leading to performance issues including a reduction in power, reduced acceleration and decreased fuel efficiency. It can also cause vehicle emissions to increase.
Why does my engine stall when the EGR is open?
This is because the temperature is lower so fuel does not burn at the optimal temperature and as a result is less efficient. Stalling when the engine idles like a rough idle is usually caused when the EGR valve is permanently open and is constantly letting exhaust gases into the EGR system.
What can I use to clean an EGR valve?
This is a home experiment and an unbiased use of JLM Diesel Air Intake & EGR Cleaner. Similar products are available. This product is designed to dissolve carbon deposits, gum and varnish build up. It should restore air flow to the engine thus improving power and acceleration while reducing exhaust smoke.
How is the EGR valve controlled in a car?
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. Most modern cars utilise an electronically controlled EGR which is controlled by the vehicle’s engine control module (ECM).