ISB 300 Power loss / Turbo Failure
I have a 2004 Newmar Kountry Star with 69k miles. It's been a great coach and I have had no problems to date. On my last trip I noticed significant power loss, especially when climbing hills or tak...
Forum Discussion
The easiest thing to check first is: The 1" hose that runs under the intake manifold from the bottom front of the intake manifold and back to the air compressor. I had the same symptoms you described and a forum member gave me the same tip. My hole in the hose was at the bottom of the hose right where it connects to the air compressor just as it was described to me. A new hose is $43.00 from Cummins' or an 18" hose from NAPA about $10 bucks.
