What does a EGR bypass valve do?
What does a EGR bypass valve do?
EGR bypass valve – Located on the intake inlet. The ECM uses this valve to allow exhaust gas into the engine without going through the EGR cooler (EGR cooler bypass).
Why is my EGR oil cooler not working?
If your EGR cooler is failing, it could be because it’s not getting enough coolant. This can indicate a problem with your failing water pump or failed OEM Oil cooler. In other words, your EGR Cooler is trying to tell you something important!
Is it legal to delete an EGR cooler?
Beyond the legality of an EGR delete, there’s another important factor to consider. If your EGR cooler is failing, it could be because it’s not getting enough coolant. This can indicate a problem with your failing water pump or failed OEM Oil cooler.
How is an EGR cooler used in an engine?
The EGR cooler is a component used to lower the temperature of the exhaust gases that are recirculated by the EGR system. The EGR system recirculates exhaust gases back into the engine in order to decrease cylinder temperatures and NOx emissions. An EGR cooler is a metal device that employs thin passages and fins to cool the exhaust gases.
What kind of problem is an oil cooler leak?
Too much of that and there may be a problem. The oil cooler issue is something different. You end up with thick grey-brown sludge in the coolant tank. EGR cooler leak is accompanied by larger amounts of coolant loss and sometimes sludge. Coolant loss can have numerous causes and not all represent a defect.
What causes steam to come out of an EGR cooler?
Usually, the first sign of failure is white exhaust smoke. This “smoke” is actually steam from boiling water or coolant. There are several possible sources for this steam, including head gasket failure, a cracked EGR cooler or condensation inside the exhaust system.
What happens to the coolant when the EGR valve is closed?
Cooled when the coolant flow removes heat and the EGR valve is closed, and then heated and stressed as hot exhaust gases pass through. Each time it heats up, the metal inside the cooler grows and strains against the restraints of the unyielding metal shell, causing stress and strain.
What’s the best way to clean an EGR cooler?
To clean really dirty passages, some repair shops place EGR coolers inside an ultrasonic cleaner. The ultrasonic waves vibrate the carbon loss while circulating detergent through the passages. This can speed up the cleaning process. How often should you clean your EGR’s cooler?
What happens if you have oil in the coolant reservoir?
You also know that oil and water never go together and thus, oil in the coolant reservoir is never a good sign. Here is an article about what could happen if you have oil in the coolant reservoir and what you can do to prevent it. 1. Damaged Head Gasket 2. Faulty Oil Cooler / Gaskets 2. Cracks in the cylinder heads 3. Cracks in the engine block
