Air intrusion
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Trailering
Joined: May 2022
Posts: 17
Likes: 1
Air intrusion
I’ve got a 7.3 idi with a definite air intrusion problem, I redid all the injector o rings and slapped a return line kit on, but the problem persists, I did notice a decent leak at the fuel selector valve, and Was wondering if air could get in through there?
Thread Starter
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Trailering
Joined: May 2022
Posts: 17
Likes: 1
its 100% air intrusion, it only starts when I crank for 15 seconds, Wait then hit the glow plugs and crank, or drain the schrader valve on the fuel bowl, just wondering if air can get in before the mechanical pump
Logistics Pro
Joined: Nov 2013
Posts: 3,928
Likes: 1,198
From: Mojave, Ca
Yes, air can get in before the mechanical pump, but in that case, the engine will start up fine and then stall as you drive down the road.
if you're certain you did a good job on the fuel injector caps, the. You should look at your fuel filter heater o-ring on the fuel filter head. It's pretty easy to replace, and it only takes a few special tools.
if you're certain you did a good job on the fuel injector caps, the. You should look at your fuel filter heater o-ring on the fuel filter head. It's pretty easy to replace, and it only takes a few special tools.
Thread Starter
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Trailering
Joined: May 2022
Posts: 17
Likes: 1
Well it starts up then dies after a few seconds I’d I don’t prime it, sorry forgot to mention that, but I only see a small amount of residue on the heater plug, could that small of a leak be the problem?
