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Old 03-23-2014, 10:25 PM   #1
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Slobber tube on new 340 hp Cummins "B"

Is there a properly positioned slobber tube on the newer 340 B series cummins or is there some other manner of eliminating vapors?
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Old 03-25-2014, 05:13 AM   #2
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NO. If by "newer" you're referring to the 2013-14 engine on your 2014 MH there is no slobbertube. To meet EPA requirements it has an EGR (exhaust gas recirculation) system somewhat like your auto.
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Old 03-25-2014, 07:17 AM   #3
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Quote:
Originally Posted by capnqball View Post
Is there a properly positioned slobber tube on the newer 340 B series cummins or is there some other manner of eliminating vapors?
Open crankcase vents aka slobber tubes went away by '07 engine production or earlier as part of emissions compliance. The closed systems route the vapor back into the intake system & combustion chamber.
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Old 03-25-2014, 07:48 AM   #4
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If you have an ISB 6.7L engine; than you have a closed crank case filter under the engine cover towards the rear of the engine. This is other than programing and painting the same engine in the RAM pick-up truck. They are built on the same assembly line in Columbus IN. at the CMEP plant. This was pointed out the tour group as we tour the plant there last year.

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Old 03-25-2014, 09:38 AM   #5
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Thanks guys, now thinking about it, the EGR feature should have hit my aging brain earlier. They say there's no stupid question for us relative beginners, but I think I pushed the envelope on that one (slap face now)!

(one week away from picking up our new coach from Guaranty RV)

See ya down the road sometime.
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Old 03-26-2014, 05:14 PM   #6
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Just to be clear; crankcase ventilation in a closed system routed through the intake and exhaust gas recirculation (EGR) are two completely separate systems with different functions.
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