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Old 08-09-2010, 09:24 AM   #1
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Join Date: May 2009
Posts: 86
intercooler inlet hose blew off

Driving home yesterday the intercooler inlet hose blew off accelerating onto the highway. Lost 95% of my engine power. Was able to drive some where at only 5 to 15 mph. Was a lot of fun working on the hose while parked on the side of the hot road. There was a load pop when the hose came off.

My concern was some oil that blew out of the hose going to the intercooler. Should I be concerned about the oil going into the intercooler. I am assuming it is from the turbo charger lubrication. There wasn’t much just enough to make putting the hose back on very dirty.
2008 Winnebago Tour with 8.9 Cummins.
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Old 08-14-2010, 08:47 AM   #2
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Appalachian Campers
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Location: Greeneville-North East Tn.
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I found about any part of a diesel will get you dirty. I had an air compressor hose on mine burst. ('01 ISB 300) Caused about the same symptoms as you had. Took forever to locate the problem. No whistle,whine-nothing.Cummins looked at the problem with no luck-just said "you are loosing boost pressure". It has the Banks Ottomind so they wouldn't go any farther. I found it when attempting to change the turbo boost sensor.
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JOE.. LEO(ret.)-active USCGAUX-
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Old 08-14-2010, 08:54 AM   #3
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One of the tricks used by the Cummins hot-rodders who are running over (in some cases, WAY over) 30 PSIG of boost is to clean the inside of the hoses as well as the matching fits of the turbo compressor discharge, intercooler nozzles and intake manifold elbow thoroughly to ensure that no oil whatsoever is present, then to spray them with hairspray before putting the hoses back on. The hairspray dries tacky enough to provide additional holding power without making the hoses impossible to remove if necessary.

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