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Is there a treatment for the algae that will eliminate it from the fuel system? Biobor JF Biocide or something similar?

Ladies and gentlemen, I present you with the source of the problem.... The fuel check valves. Once removed, the Hmmwv hummed like a drunken bear. I will likely still replace the fuel pump per RWs recommendation but I want to give a special shout out to Mike Vadin from Black Dog Customs for...

I just read that. Btw, I do like reading the TMs. It has helped change trans oil cooler, seats, batteries, vent lines, etc. Just wanted an eye ball on the issue is all. Taking the plastic bottle to truck now. Will update. Thank you for this. Perfect timing.

Today, I'm going to change the lift pump as I'm trying to eliminate the straight forward items first: https://tchavers.wistia.com/medias/a15fr2ob4o But before I start this, does this appear to be a lift pump issue. See vid. I opened that valve to check flow and see if I was getting air in the...

This end is in the fuel tank correct? I havent yet dropped the tank and looked inside.

I did notice this when under the truck but may not be related. Looks like diesel fog coming out of the exhaust pipe as it's missing a bolt.

Pulled the fuel filter housing and it doesn't look bad. Looks like there is a spot on the filter where it has separated so I will replace that but none of this really looks like a problem to me.

It is a vent line but I just dont know where the far end attaches and the manuals don't seem to specify

Anyone know what the T line in the picture is supposed to connect to https://ibb.co/7Y273LQ Mine isn't attached to anything on the right side as you can see.

No keyed ignition switch. I was warned against those. :) I will check the #54 connector

I'll recheck these things. Thanks RW

Yes, all of that was done. Completed by a shop and then verified by myself once it arrived.

I'll take a look at that. Also, I don't know if this helps with the diagnosis but I also get this trickle of smoke https://ibb.co/wJHmcWQ when pumping the gas pedal and working the truck to start. I also see a tiny bit of smoke come from under the hood close to the windshield.

I believe the truck has a fuel feed issue because it cuts off after running for a short while. It will idle fine for quite some time after being started. However, when it comes to driving... Maybe 2 minutes max time. If I just gently touch the pedal while driving (think a touch over idle) and...