changing fuel filter need help
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Freshman User
Joined: May 2017
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From: Upland
changing fuel filter need help
I bought a motorcraft filter kit the filter under the hood and the one in the water separator. I watched a few youtubes and they said about 2.5 quarts will drain out of the separator then you can take it apart replace the filter. I just drained two gallons and its still going. What am doing wrong.
Thanks Jeff
Thanks Jeff
Junior User
Joined: Jun 2018
Posts: 67
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I bought a motorcraft filter kit the filter under the hood and the one in the water separator. I watched a few youtubes and they said about 2.5 quarts will drain out of the separator then you can take it apart replace the filter. I just drained two gallons and its still going. What am doing wrong.
Thanks Jeff
Thanks Jeff
Junior User
Joined: Jan 2017
Posts: 94
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From: Dixon, MO
Did you change the upper filter first? I think that causes the free flow. I also think some have taken the fuel cap off to stop the siphoning. I wish I could help more. When I changed mine I did the bottom separator first, made sure my fuel was at a quarter tank and truck was level. I only had a quart or so drain. Wish you luck!
Mountain Pass
Joined: Apr 2017
Posts: 115
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Same thing happened to me. No worries. The few times I drain d the water only a couple quarts came out. Just last week I went to change the fuel filter right after filling up. That was a mistake as 2 gallons came out and was still going. Closed it up and will wait until I burn some more fuel.
ETA.. I think the post above about opening the cap is good advice. I didn't think of that.
ETA.. I think the post above about opening the cap is good advice. I didn't think of that.
Last edited by First3Quarter; Sep 8, 2018 at 07:28 PM. Reason: Info
Senior User
Joined: Jan 2017
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From: Nebraska
You need to disconnect a line above the fuel filter on the tanks. Some early build trucks do not have a check valve and will drain until lower level in the truck. Mine is like this. I have found if i run the truck to a 1/4 tank left it wont do it. If you have a full tank you need to disconnect i believe the most left line while looking at the rear of the truck and it will not drain that much. You should see 3 lines on top of the lower filter housing. slide out the locking tab and disconnect the line then drain fuel and remove filter.
Posting Guru
Joined: Aug 2015
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You need to disconnect a line above the fuel filter on the tanks. Some early build trucks do not have a check valve and will drain until lower level in the truck. Mine is like this. I have found if i run the truck to a 1/4 tank left it wont do it. If you have a full tank you need to disconnect i believe the most left line while looking at the rear of the truck and it will not drain that much. You should see 3 lines on top of the lower filter housing. slide out the locking tab and disconnect the line then drain fuel and remove filter.
Mountain Pass
Joined: Jun 2012
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From: Silicon Valley, CA
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Logistics Pro
Joined: Feb 2005
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From: SEVA
That may have been applicable to 2017 Job 1 trucks. My 2017 is a Job 2 and I only drained about 2 quarts from the water separator the first time I opened the valve. I did not disconnect anything else, but I also don't recall how full my tank was.
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Joined: Oct 2015
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From: Wyoming
I'm pretty sure mine is a Job 1 truck (Dec 2016 build). When I drained the fuel from the separator only a limited amount of fuel came out. Less than a quart. I'm hoping that means changing the filter will be easy with a similar small amount of fuel to deal with.
Junior User
Joined: Jun 2017
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my 15k change was 3 gallon mess and now that i am approaching the 30k mark, I am less than thrilled to take a diesel bath in the drive.
If I am reading everything right, this should be a safe order for a job 1 truck.
1) 1/4 tank or less of fuel
2) open fill cap
3) disconnect the middle line from the filter at the tank (thank you Quattro)
4) drain it
5) drop it / replace it
6) do the underhood
If I am reading everything right, this should be a safe order for a job 1 truck.
1) 1/4 tank or less of fuel
2) open fill cap
3) disconnect the middle line from the filter at the tank (thank you Quattro)
4) drain it
5) drop it / replace it
6) do the underhood
Junior User
Joined: Jun 2018
Posts: 67
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The last one I did on my previous truck only took about 20 minutes. I found loosening the bowl some before starting the drain wastes less diesel. After it drains for a minute I unthread the bowl almost all the way and the diesel stops flowing.
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Freshman User
Joined: May 2017
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From: Upland
Follow up
Before continuing I read the first couple of replies and I went ahead and dropped the bowl and about 2 more quarts came out. Total 2.5 gallons of fuel.
I did not touch the filter under the hood until finished the separator filter. Upper under hood filter was simple and no mess.
My truck build date is Nov 2016
Thanks for the responses
Jeff
Before continuing I read the first couple of replies and I went ahead and dropped the bowl and about 2 more quarts came out. Total 2.5 gallons of fuel.
I did not touch the filter under the hood until finished the separator filter. Upper under hood filter was simple and no mess.
My truck build date is Nov 2016
Thanks for the responses
Jeff
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