Compression Ignition Addict
Join Date: Feb 2011
Location: upstate ny
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Definately not being a smartass, but is this your first diesel?
If it's a new noise, get your truck up to speed, and coast down a hill-hold a gear manually with the lever and see if the noise goes away when you're off the throttle, and comes back when you get on it. My guess would be that you're hearing the injectors.
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2005 Lariat CCSB F-350 SRW
300,000 miles and going strong
12" fabtech lift with 40" Xterrain's on M/T classic locks, Adjustable track bar, Bilstein 7100 reservoir shocks
Edge juice/attitude CTS, SCT with ID tunes, Snow meth. injection, Diamond eye 4" exhaust, 03 turbo, ARP studs, Sinister coolant filter
2010 stone seats/console, pioneer avic d3 with backup camera/bluetooth
Viair 450c compressor, dual 2.5 gallon tanks, air horns rated @115db