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-   -   EGR valve (http://www.hotrodders.com/forum/egr-valve-143723.html)

SBCfan04 08-19-2008 08:14 AM

EGR valve
 
What is it? and how does it work?

richard stewart 3rd 08-19-2008 09:46 AM

Hi,
EGR = exhaust gas recirculation valve.
It's used to allow a portion of the exhaust gases to be routed back
into the combustion chamber to be re-burnt,
resulting in lower emissions & a cooler more complete burn.
Rich

SBCfan04 08-19-2008 11:14 AM

thanks..if the EGR valve is bad can that make a engine run rich or anything?

Jmark 08-19-2008 12:21 PM

It won't be rich, atleast not enough to notice, but you may find the engine more prone to pinging than before.

richard stewart 3rd 08-19-2008 12:27 PM

egr valve
 
If the egr valve is stick open it will cause,
rough idling, a vacuum leak, & hesitation.
if stuck closed it can cause knocking (pinging)
Rich

Jmark 08-19-2008 01:23 PM

Quote:

Originally Posted by richard stewart 3rd
If the egr valve is stick open it will cause,
rough idling, a vacuum leak, & hesitation.
if stuck closed it can cause knocking (pinging)
Rich


Good addition! I forgot that they can stick open too. Seen lots of them back in the day.


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