I have a 2001 5.9 what is the tail tail signs of the intake is leakin. I am getting bout 10 mpg and I have had a tune up and runing 285 tires and I been driving like a grandma. And my truck is running great. I don't know why it sucks it down.

 

There are many posts on here about this topic, but the most common complaints is oil usage, spark knock on acceleration. The easiest way to check is to take your air cleaner off and open the throttle blades and look down into the intake. If you see dark areas or oil build up, well theres your problem. If you do some searching on here you will find more detailed info about it.

 

^+1. Sometimes you can't see much through the butterflies on the TB. A lot of us recommend to take the throttle body off the manifold, and get yourself a dentist's mirror and flashlight, and look for any oil pools on the belly pan.

 

how much do yall think it is to get some one to fix

 

depends on how they wanna fix it. You can spend anywhere from 50, to 200 bucks on parts, and 0, to whatever 6-8 hours at going rate on labor. If you have some tools, and a place to work on it, you can do it yourself in a day, and save the cash on labor.

Just replacing the gasket is a temporary fix. Replacing the gasket and bolts, with some shorter ones, will last longer. The hughes or APS plenum plate/bolts, is a permanent fix.

 

If 10 mpg is a mix of highway and city that sounds about right for a good running truck.

 

i run this truck to work and back going about 50 to 60 all the way i slow down 3 times to make a right turn about 20 miles round trip. and where can i get the hughes or aps kits at and if you have a link that would be great.

 

Woots! I'm getting about 10-11 with mine! Full stock

 

Hughes Plenum Plate.

 

Added the rest of the sentence for ya.