Today With my truck hot and unloaded I can only hit 15 psi floored. its 46* out and no extra smoke any ideas?

 

Check your IAT and MAP sensors to see if its sooted up or failed...



This is what my sensors look like after 6K miles and it's time for a oil change... I also have a exhaust brake installed...

The IAT sensor checks intake temps and adjust fueling and timing... And the MAP sensor checks boost pressure for fueling amount...

So they both play a roll in the lack of boost...

 

I checked for leaks today with the shop compressor over the turbo and useing soapy water found no real leaks.. I am wondering If there is some kind of kink in my boost line. Truck runs out and no smoke still. Do you just clean them of replace them? Mine are probably clean because I don have the exhaust break

 

Shot of carb spray or brake cleaner... That will do the job of cleaning both sensors...

 

Whats your fuel pressure? You need fuel to create boost...........

 

19-22 psi with the FASS 95. I just put the k$n in to see if it was a clogged filter and still reads 15psi the drops to 13 at wot. The needle also is slow coming up and fast coming down. I have another gauge at (I will try to plumb this up outside the truck to see if it just my gauge) work I will try tommorrow or tues. I also checked the wastegate with a cresent wrench for movement. It seems fine. I hope its the gauge.

 

Well it was the actuator. I turnbuckled it and now 30+ psi woohoo.