Fuel intrusion help.
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Freshman User
Joined: Sep 2008
Posts: 45
Likes: 0
Fuel intrusion help.
I have a 92 7.3 and Its hard starting when the truck is cold. It cranks and cranks and cranks. When i get it started in runs pretty good. But when my foot is on the gas the fuel guage drops drastically and when i take it off it goes back to normal. So for what i have been reading on here it sounds like i have air getting into the system. The truck has a new fuel filter and new gp's. Where do i start looking for air getting in? thanks again guys.
Moderator
Joined: Jan 2001
Posts: 57,015
Likes: 2,751
From: Virginia
If it had air in the system, it should start, and then die. The fuel will stay at the injector, but leak back behind the injection pump if it was getting air. So it will run for a few seconds, and then crank and crank.
Post Fiend
Joined: Nov 2004
Posts: 5,638
Likes: 1
From: Manitoba
It cranks and cranks and cranks
How old are the injector return lines and caps.... are they grey.
How high are the RPMs of the fast idle set, do you press the fuel pedal half way down and hold it there for a start.......
What condition are the batteries...... what CCA are they and how old.
How fast does the engine crank over it must be faster than you can count.
