Is an EGR Valve Necessary?

Topics related to the engines for the later MG Midget series.

Is an EGR Valve Necessary?

Postby henaryg » Mon Jun 27, 2005 5:55 pm

I am new to fixing up autos and my dad and I just purchased a 1975 MG Midget. In the process of fixing up the engine we came across the EGR valve which, when we got it, was not hooked up. I was wondering if you actually need the valve or if you could "cap" it, so to speak? If you can do that, then what do I need to do with the hoses "T"-ing into the valve? Any help on the whole emissions system would help.

Thanks,
Brian
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Postby pankeyg » Mon Jul 25, 2005 6:59 pm

Hi Brian.

The EGR valve (Exhaust Gas Recirculating Valve) is not necessary for your car to run. In fact, it probably will run better without it. The valve is intended to reduce nitogen oxide (smog) that is produced at the end of the combustion cycle.

Check out this informative article on what the valve does:

<<http://search.netscape.com/ns/boomframe.jsp?query=EGR+valve&page=1&offset=0&result_url=redir%3Fsrc%3Dwebsearch%26requestId%3D19c8c13fb25d4960%26clickedItemRank%3D1%26userQuery%3DEGR%2Bvalve%26clickedItemURN%3Dhttp%253A%252F%252Fwww.misterfixit.com%252Fegrvalve.htm%26invocationType%3D-%26fromPage%3DNSCPTop%26amp%3BampTest%3D1&remove_url=http%3A%2F%2Fwww.misterfixit.com%2Fegrvalve.htm>>

My take on the article is if you just take short mild trips with the car then the EGR valve will serve no purpose.
Cheers,
Gary Pankey
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Postby henaryg » Tue Aug 09, 2005 12:42 am

Gary,

Thanks for your help. The article was very informative.

Brian
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