Crawl under the truck with a flash light and look at the up pipe. See if u see any black soot on the pipe.


The guy who is no longer driving a suburban

 

Yeah probably a cracked up-pipe or y-pipe.

 

If it is a sweet smell in the cab is there a possibility it is a leaking heater hose/coil?

 

Thank you, Gentelmen.
I see I should clarify... To me diesel exgaust out of a idleing diesel smells sweet to me. Based off the smell of my '84 6.9, '97 7.3, '05 6.6, and '05 6.0...
You are right coolant does smell sweet as well (different though). I guess one mans sweet is another mans sweat.

 

Yeah I like the smell of diesel every time I crank my truck and hear that sound and smell that smell I find myself grunting like Tim the tool man Taylor

 

start it up cold and reach your hand behind the turbo feel the y pipe at the flex joint. If you feel air coming out theres your problem.

 

i have a 2007 6 ltr, had an egr delete done and new exhaust and new Garrison turbo and still have the smell of diesel from the vents. Sucks Eh

 

Typically when an EGR delete is done and a new solid up-pipe is used, it's usually the person who installed it to be at fault. The instructions hardly ever say it, but there is a sequence that should be followed for tightening down all the exhaust connections. It will never seal right if you don't. The common leak point is the y-pipe feeding the turbo from the up-pipes. That connection right at the turbo leaks all the time because everyone does that last, and really that should be the first connection. Those v-bands will never pull the connection together.