High Idle and diesel leak

[Jonathan734]

This morning I went out and started my truck and it was about 20 degrees. I went inside to get some stuff and was gone no more than 10 min. When I came back out the truck was idling at 900-1000 rpm and was leaking diesel out of a hose from the front of the motor. I drove the truck and didn't notice any power loss or anything abnormal, but what would this be from? I had my tuner out so it was in stock form, except for the intake and exhaust.

[NCHornet]

The high idle is part of the cold weather package, it will increase the idle in order to burn as much fuel as possible, so nothing wrong there. The fuel leaking from the drain tube are the O rings in the fuel/water seperator, they can be easily changed or you can buy the complete drain valve for under $50. Make sure if you choose to do the O ring you use Viton O rings, there are people selling them cheap on Ebay, or Google "Powerstroke O rings" and you can get the part # and go to a hydraulic shop, shouldn't cost more than a couple bucks. Pm me with any more ?

[Builttuff]

I had the same leak. I just put a bolt in the end of the hose to get me to the dealership without loosing all that 3.44 a gallon stuff!

[Jonathan734]

Well as soon as I touched the pedal and revved the motor a bit the idle fell back to normal. It didn't stay that high the whole time. Thanks for the info on the o-rings. It hasn't done it again but I will take a look.

[DKR]

Originally Posted by Jonathan734

Well as soon as I touched the pedal and revved the motor a bit the idle fell back to normal. It didn't stay that high the whole time.

Yeah, the cold high idle will only do it if the truck is parked and idling. As soon as you hit the pedal, the RPMs will drop to normal. Oh, and just FYI, it should sit right about 1000RPMs.

[Jonathan734]

Cool didn't know the truck would do that. I will have to get some of those o-rings now.