Am I the only one?

[longbedder]

I see lots of talk about cracking injector lines in this forum, when it comes to troubleshooting or fixing fuel delivery or run-out problems. I installed my current 6.2 freshly rebuilt, and simply primed up to the filter by cranking and loosening the bleed screw (I use a Stanadyne Fuel Manager filter system). I then just cranked until it fired up (maybe 5 seconds). My fuel guages don't work, and I've run out of diesel in one of the sidesaddles twice. In both cases, I just cranked for about 5 seconds, and it fired up again. It did thedn run like crap for about 10 seconds or so, but it still caught. I've never had to crack injectors for any reason. Am I alone in this?

 

[imiceman44]

I see lots of talk about cracking injector lines in this forum, when it comes to troubleshooting or fixing fuel delivery or run-out problems. I installed my current 6.2 freshly rebuilt, and simply primed up to the filter by cranking and loosening the bleed screw (I use a Stanadyne Fuel Manager filter system). I then just cranked until it fired up (maybe 5 seconds). My fuel guages don't work, and I've run out of diesel in one of the sidesaddles twice. In both cases, I just cranked for about 5 seconds, and it fired up again. It did thedn run like crap for about 10 seconds or so, but it still caught. I've never had to crack injectors for any reason. Am I alone in this?

Well I had no issues with my burb untill it sat for 2 weeks and when I tried to start it it kinda started then nothing, so I ended up purging the air out of the filter (stock square) and then it fired right up, but next week it did the same thing and now I can't get it to start, I might have to bleed at the injectors.

 

[MaxPF]

Apparently the base for those square filters have a habit of cracking, letting air in, and air locking the engine.

 

[imiceman44]

Apparently the base for those square filters have a habit of cracking, letting air in, and air locking the engine.

I know that is why I mentionned it still had that filter.

 

[kennyw]

My '79 would start up fine after running out of fuel. It had an '84 6.2L with the square style filter base. Though I've messed with an '82 with the spin on filter base and was that one ever a bitch to bleed out. It was plumbed from the tank up to the filter, then down to the lift pump, then back up to the second filter on the motor, then into the injector pump...

 

[MaxPF]

I know that is why I mentionned it still had that filter.

Gotcha

 

[6.2Blazer]

I have a '90 with the square filter base. I have never done more than bleed it at the filter. Did have an issue awhile back where it would be hard to start after sitting for awhile, like the fuel was bleeding off and getting air in the lines. I suspected the filter, so I got a new one and slapped it in and never had that problem again, not sure if maybe it was just a bad filter or seal, or bad installation. I've owned this truck since '94 and have replaced the filter at least a dozen times and the lift pump, so I've bled it many times.

 

[imiceman44]

I have a '90 with the square filter base. I have never done more than bleed it at the filter. Did have an issue awhile back where it would be hard to start after sitting for awhile, like the fuel was bleeding off and getting air in the lines. I suspected the filter, so I got a new one and slapped it in and never had that problem again, not sure if maybe it was just a bad filter or seal, or bad installation. I've owned this truck since '94 and have replaced the filter at least a dozen times and the lift pump, so I've bled it many times.

So I guess I am going to check the filter and try again.
It did that when it sat for 2 weeks then I got it running by bleeding at the filter, then ran it for 5 days fine, sat for a week and now it's no start, and bleeding is not working, I can't get any fuel so I am going to check the filter and maybe the lift pump

 

[Rob 85K5]

Pull the return line off of the IP and run and air line to it with 4 psi. Let that sit and then crack the air bleeder and purge what air is in the system. Let it sit more and then look for leaks, the fuel leaks become air leaks when shut down.