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Old 02-20-2013, 07:39 AM   #1
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EGR? How do you know

Is there an easy way to tell if a diesel is EGR? Knowing the year is not totally reliable. Is there some sort of engine code or other designation that will tell me for sure?
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Old 02-20-2013, 09:47 AM   #2
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The engine manufacturer could tell you if you call them with the engine serial number (on a plate on the engine block somewhere). Cummins has help on their site for finding the ESN.

I thought diesel engines made for highway use after 1/1/2003 all had EGR. There are, of course, some 2003 model motorhomes that use chassis built in 2002 and thus do not have to meet the 2003 spec.
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Old 02-20-2013, 10:05 AM   #3
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Quote:
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The engine manufacturer could tell you if you call them with the engine serial number (on a plate on the engine block somewhere). Cummins has help on their site for finding the ESN.

I thought diesel engines made for highway use after 1/1/2003 all had EGR. There are, of course, some 2003 model motorhomes that use chassis built in 2002 and thus do not have to meet the 2003 spec.
My 07 Endeavor has no EGR.
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Old 02-21-2013, 02:59 AM   #4
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If you are looking at a PU you can find an emissions label under the hood that will list all emissions equipment installed. this also applys to "C"s DP ?
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Old 02-21-2013, 07:28 AM   #5
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Quote:
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The engine manufacturer could tell you if you call them with the engine serial number (on a plate on the engine block somewhere). Cummins has help on their site for finding the ESN.

I thought diesel engines made for highway use after 1/1/2003 all had EGR. There are, of course, some 2003 model motorhomes that use chassis built in 2002 and thus do not have to meet the 2003 spec.
I have seen several statements around the internet about the date after which "all diesel's have EGR" with dates up to 2007. That, plus the fact that listed "year" doesn't always mean the actual year the coach was built makes me want to have a more definitive way of knowing. I have been shopping and have asked the question of several dealers and none of them had a clue about EGR. So, as always, its up to me to know the facts before I buy, so I just need a way to check, hopefully without calling the manufacturer every time.
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Old 02-21-2013, 07:36 AM   #6
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I've heard there is no stupid questions so here goes. What is EGR, ESN, and why do I need to know if my 08 Cummings in my Fleetwood is one of these. Feel free to assume that this forum was hacked if this falls into the super stupid question.
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Old 02-21-2013, 09:36 AM   #7
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EGR = Exhaust Gas Recirculation, and emissions control gadget.

ESN = Engine Serial Number (a term used in Cummins engine documentation).
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Old 02-21-2013, 10:37 AM   #8
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Thanks Gary, don't tell huntnski Im asking rum question under his title........the hacker
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Old 02-21-2013, 02:55 PM   #9
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The previous (original) owner of my 2007 HR with the 8.9 Cummins actually worked for Cummins until he retired.

He told me, and I've seen supporting info on the internet, that Cummins started putting EGR's on these engines for the 07 model year.

That was why he made sure to order this one new just before the engine model year changed, so mine actually has a late 06 engine.
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Old 02-21-2013, 03:17 PM   #10
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In jan 2007 they started with emissions control. How to tell is if you have a big tube running from exhaust to your intake. That is a egr.

Also the exhaust will have some big cans in them for the soot to be caught.
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Old 02-21-2013, 03:32 PM   #11
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Quote:
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In jan 2007 they started with emissions control. How to tell is if you have a big tube running from exhaust to your intake. That is a egr.

Also the exhaust will have some big cans in them for the soot to be caught.
Cummins started EGR fuels systems on different engines in different years. The ISL started EGR on all engines built after 1/1/2007. That was also the date for the particulate filter system which the big cans refer to. They are different systems but on the ISL they started at the same time. The. ISM started with engines built for the '04 EPA requirements. I'm not sure about the ISC the OP asked about. Unfortunately calling Cummins with the engine # is the most fool proof way. It's true that if you learn where to look you can spot the EGR plumbing but it's not always as easy as it sounds.
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Old 02-23-2013, 12:48 PM   #12
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My '04 ISL doesn't have EGR either. I think Steve Ownby has it right. Or at least as right as I can prove by hearing from owners or manufacturer web sites.

The EPA never requires a particular technology like EGR - they just tell you the emissions spec you have to meet and leave the engineering to the engine builder. Often, though, there is only one technology that is cost-effective for meeting the EPA spec.
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Old 02-25-2013, 09:26 AM   #13
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a cummins rep at a fmca rally told me that starting in 2010 a reduction in NOx was made possible by injecting def (urea) in the exhaust ..This enabled the the engineers to reduce the amount of egr by about 85% ...the bad part is the $$$ per engine went up..the good part the engines with def make more power than the same engines with egr...

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