Engine overheating
Hey all- We have a 2005 Holiday Rambler with a Cummins ISC 330. On our way to Flagstaff AZ, at 7,000 feet, we began to experience some overheating. The water temp gauge spent quite awhile in the re...
Forum Discussion
FIRE UP wrote:
I don't know about Cummins but the CAT engines have a blowby tube that unless is extended, it can cause oil mist to be transferred to those fins and the, the fan, like a giant vacuum cleaner, sucks up every particle of dust and debris from the road surface and deposits all of it on those oil/mist coated fins and what do you have, pretty soon a solid surface and no FINS!!
ALL diesel engines of that vintage had blowby routed to atmosphere (open vents-- usually around 1"ID).
It is only more recent EPA mandates that have closed crankcase breather systems.
