Whooshing noise from exhaust

[BobQ]

I get this whooshing noise from the exhaust when cold, it does it about every five to ten seconds, It also idles rough once in a while, no check engine light, is this normal? This is my first power stroke. Also this is a 2000 7.3. Thanks for any help you can offer. Also I did use the search first but could not find my same issue.

Thanks Bob

[Gold 7.3]

yes this is normal. Basically is a part closing to warm the truck up, but I can't think of the name since your asking.....lol.

[partsguy84823]

Its the EBPV (exhause back pressure valve). It activates when ambient temp is below 40F and oil temperature is below a certain temperature (not sure how cold).

You can read all about cold operation of the 7.3 HERE

[BobQ]

Thanks for the help and the link! I wonder why I was unable to find that on my search?

[partsguy84823]

Meh, i've never had a bunch of luck searching for things.

[NoRalPh]

Shouldn't have been hard to find.....

TOP of the previous page, even says "Hissing Sound"

Winter Operation, Hard Starting, Hissing Sound Etc...