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Old 01-13-2007, 04:19 PM   #1 (permalink)
jm8881
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How "I" changed my box type fuel filter.

I bought a fuel filter about a week ago and decided to check on here before installing it to see if there was any precautions I should take while installing it. I read about all the work you have to do to work on the fuel system which scared me off for that week. I did a little thinking here and there and decided to try it but a little different than how it's described in the sticky.

I don't have any way to pressurize the fuel system, which was the main thing that scared me off, but I notice how that if you remove the gas cap a bunch of air escapes. Probably only a few psi but that should help.

I had been driving the truck today and figured it would be easier to start up if the engine was warm rather than fight to start the engine cold.

First thing I did was open the drain valve, which is on the bottom right side of the fuel heater, to drain the filter. It didn't come out of the barb atatched to the fuel heater but out of the drain valve. I don't know why, maybe the drain hose was clogged. It was on there when I bought the truck.

You should put a hose on that barb to help drain the fuel into a cup or something to keep everything clean and free from combustible fossil fuel.

Next I opened the air bleeder (top left of fuel heater) and a little diesel came out of there also.

Then I removed the filter by pulling the clasps off.

I didn't fill the new filter with fuel, only greased up the gaskets and fuel in and out barbs with clean diesel that came out of the old filter.

I then closed the drain valve and wiped a few things clean. Leave the air bleeder open with a hose atatched to it leading to another container. This way you can bleed the air out without it going to the ip and when fuel comes out you know the air is gone and the filter is full.

I unplugged the power wires from the ip (thin green and thick pink) so I could pump fuel through the system with the starter and hopefully not force any through the ip causing hard starting trouble.

Before cranking you may want to disconect your glow plug power to prevent it from starting. My truck has a manual switch so I don't know if the glow plugs working would hurt anything.

It only took 2 10 second sessions of cranking to pump the fuel filter with fuel and then through the bleeder valve and into my catch can.

After that I closed the air bleeder valve and hooked up the ip. Then I warmed the glowplugs for 3 seconds and it fired right up within 2 cranks.

I don't know if I got lucky or if it is much more easy to do than what I've been reading but this worked very well for me.

Hope this helps someone.

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Toy - 1993 S10 Blazer - SFA, 3" body lift, 8.8 rear, crossover steering, 383 stroker, 33" tires, and more goodies sprinkled on top.
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Old 01-13-2007, 07:40 PM   #2 (permalink)
High Sierra 2500
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That's an excellent way to change the filter...

That method should be in the sticky in addition to the air pressure method in case you don't have access to an air compressor... I used to do it that way before I figured out how to use the air pressure trick and it works good so long as your fuel pump is good. It doesn't work very well if all the lines are empty, though... The batteries go dead cranking the engine.

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Last edited by High Sierra 2500; 01-13-2007 at 07:47 PM.
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Old 01-13-2007, 08:03 PM   #3 (permalink)
D.Camilleri
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This is exactly how the filter should be changed. I will make it a sticky!
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Old 01-13-2007, 09:12 PM   #4 (permalink)
jm8881
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Quote:
Originally Posted by D.Camilleri;1523963;
This is exactly how the filter should be changed. I will make it a sticky!
I was kinda worried that I wouldn't be able to get the sucker to start since I had no way to pressurise it but one time I had to patch a portion of the fuel line closer to the tank and it started right up so I figured/hoped/prayed that this would work.
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DD - 1984 Chevrolet Blazer 6.2 Diesel - 33" tires, 4" lift, and cherry bombs. It's no looker and it's not fast but like the tortoise it will catch up and 4x4 you into the ground.
Toy - 1993 S10 Blazer - SFA, 3" body lift, 8.8 rear, crossover steering, 383 stroker, 33" tires, and more goodies sprinkled on top.
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Old 01-14-2007, 09:40 AM   #5 (permalink)
High Sierra 2500
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You don't have to pressurize the system at all... It just makes it easier and quicker in most cases.

Glad this got stickied!
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1996 gmc suburban 6.5 diesel 2500 leather etc etc 225k miles and counting

2000 K1500 Silverado Z71 ext cab short box 5.3 gas. 320,000 miles and counting Sold at 325k miles

1927 Ford Model T pickup. Bone stock 22 hp 4 cylinder. Driven to work on a regular basis...
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Old 02-04-2007, 08:59 PM   #6 (permalink)
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fuel filter change

I make my fuel hose a little longer so I can turn the filter housing with the filter on the bottom to remove the old filter without spilling fuel. I fill my new filter with clean fuel and install it without spilling any fuel and my engine starts up as if I never took the filter can off. I then bleed the air valve to take care of any air that might be present in the filter/housing.
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Old 02-25-2007, 04:36 PM   #7 (permalink)
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howdy folks:

as a new guy on this board - have you thought of posting some pix of your write up - dunno about you but I sure could use a map

And new to this 6.2 diesel

Cheers
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Old 03-30-2007, 09:24 PM   #8 (permalink)
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I just changed mine, removed the doghouse, put some rags under the filter, removed it quickly, lost a small amount. Filled the new one up, quickly installed it, no bleeding fired right up, stalled, couple cranks, started stalled, once more then stayed running. Total time with dog house removal, 15 mins,
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Old 04-04-2007, 10:38 PM   #9 (permalink)
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I'm with you RoyBatty!!! Pics with the thread would be great! One heck of a write up though!
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Old 04-05-2007, 12:07 AM   #10 (permalink)
jm8881
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I'll get pictures up soon if that will help people but right now my camera is at a friends house so it will be a few days.

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DD - 1984 Chevrolet Blazer 6.2 Diesel - 33" tires, 4" lift, and cherry bombs. It's no looker and it's not fast but like the tortoise it will catch up and 4x4 you into the ground.
Toy - 1993 S10 Blazer - SFA, 3" body lift, 8.8 rear, crossover steering, 383 stroker, 33" tires, and more goodies sprinkled on top.
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