E.G.R.
Valves
Identify, Troubleshoot and Cure E.G.R.
Valve problems
What is an E.G.R.
Valve
The EGR valve is a way of recycling exhaust ges into the air intake of the
engine.
It's purpose is to reduce levels of pollutant g (ie nitric oxide)
All modern diesel engines have an EGR valve
What happens if the
EGR valve is
faulty?
|
 |
either the valve
stays closed
or stays open |
EGR valve
stays open |
incorrect idle
possible black smoke
poor acceleration
engine will not reach it's top speed
|
EGR valve
stays closed |
incree in Nitric oxides
engine cannot perform properly
fuel consumption may incree
incorrect
idle
Poor operation when starting from cold
Increed fuel consumption
Incorrect engine performance
engine management light |
Things to check
|
Oil: Conditon, level (too high) filter
Engine worn eg ring wear , valve wear
turbo problems
crankce breather/pipes/vents
|
More information on this excellent site
click here
http://www.wisegeek.com/how-can-i-tell-if-my-egr-valve-needs-to-be-cleaned-or-replaced.htm
© by Andy Hewing B.Sc.
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