Low fuel pressure issue

[schroederMP]

So I've noticed that since the temps have gotten cold around here (10-20 degrees with negative wind chills) my fuel pressure has went WAY down.

Normal cruising I'll see 16-17 psi and as low as 14 psi at WOT.

Now that its cold its been cruising at 13-14psi and 12 at WOT.

Is the cold temps the cause of this? Or am I just having MORE problems with my AirDog lift pump?

My rail pressure hasn't changed any...if that helps

 

[3quarterTon]

I would think the fuel viscosity is thicker. I've heard of truck in those temps with fuel gelling. Just an idea.

 

[3quarterTon]

I would think the fuel viscosity is thicker. I've heard of truck in those temps with fuel gelling. Just an idea. If rp remains the same I wouldn't worry.

 

[schroederMP]

Makes sence, I figured the anti jelling stuff I'm using would prevent that in these temps.

I may try and insulate my filters