Fuel filter recommendations
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FTE Chapter Leader
Joined: May 2020
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From: Langley B.C. Canada
Fuel filter recommendations
Just recently installed a new fuel filter from NAPA and now have worse fuel pressure than the old one I replaced.
Old filter would idle at 58-60 and drop on hills to 48ish.
New filter idles at 52ish and have seen it dip as low as 40lbs on a long uphill. Plus it’s got a weeping leak at the lid O-ring. Not happy
Thinking I’m just gonna go to the stealership and pick up an OEM.
Anybody got a better recommendation?
Old filter would idle at 58-60 and drop on hills to 48ish.
New filter idles at 52ish and have seen it dip as low as 40lbs on a long uphill. Plus it’s got a weeping leak at the lid O-ring. Not happy
Thinking I’m just gonna go to the stealership and pick up an OEM.
Anybody got a better recommendation?
FTE Leadership Emeritus
Joined: May 2014
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From: Lake Hartwell, GA
Be sure the slots in the stand pipe are lined up properly. If so, due to your location, the dealer is likely the best source for a new filter.
One more thing, it is unlikely, but perhaps the regulator is experiencing problems. I would not suspect the regulator until the other recently changed things are evaluated.
Last in, first out...
One more thing, it is unlikely, but perhaps the regulator is experiencing problems. I would not suspect the regulator until the other recently changed things are evaluated.
Last in, first out...
Thread Starter
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FTE Chapter Leader
Joined: May 2020
Posts: 2,930
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From: Langley B.C. Canada
Thread Starter
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FTE Chapter Leader
Joined: May 2020
Posts: 2,930
Likes: 2,188
From: Langley B.C. Canada
Be sure the slots in the stand pipe are lined up properly. If so, due to your location, the dealer is likely the best source for a new filter.
One more thing, it is unlikely, but perhaps the regulator is experiencing problems. I would not suspect the regulator until the other recently changed things are evaluated.
Last in, first out...
One more thing, it is unlikely, but perhaps the regulator is experiencing problems. I would not suspect the regulator until the other recently changed things are evaluated.
Last in, first out...
Had also considered a bump in spring for the FPR but it was good before the filter change.
I agree Sous. Last in - First out. Plus the O-ring is not fully holding up under pressure so that has to get changed out.
I called it weeping cause it’s a minimal leakage. Sweating is another way to describe it. I never saw it drip but the side of the bowl was wet and there was a small accumulation in only the first valley divot.
Laughing Gas
Joined: May 2024
Posts: 900
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From: E TN
NAPA fuel filter should be a WIX, uses regular o-ring and the cover has a hex to tighten it with. Did you lube the o-ring first? OEM filter won't come with a cover so you'll need a new cover to go with it and it doesn't have a hex.
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Cargo Master
Joined: Apr 2022
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I would remove the guts out of the stapipe then just put the standpipe piece back in. Then no more worries about it. Been there done that.
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Fleet Owner
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From: Rio Rico, AZ.
Since the fuel pressure regulator is technically a separate part from the fuel filter and the job that it is doing, I'm having a hard time grasping the idea that the fuel filter itself is the cause of this loss of fuel pressure. Yes, it's built into the side of the fuel filter housing, but it's only function is to open up and bleed excess pressure back to the fuel tank once the desired fuel pressure is reached. It doesn't matter how much fuel volume is delivered, if there's more it opens up more and if there's less it closes back down to maintain the desired fuel pressure.
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Joined: Dec 2018
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Bottom of that housing looks a little nasty. Bad fuel where you live?
I have a couple local places that carry the Motorcraft filter so I usually just do that. Buying in bulk you can get a better deal from Amazon or Riff-raff but by the time you pay the shipping and have to wait for the Christmas present truck to show up I just pay the higher price to get it locally. I would probably place a Riff-raff order for a new cap, the special socket, and a couple filters and see if that fixes anything. Never had a problem with leaks and that’s all I use.
I have a couple local places that carry the Motorcraft filter so I usually just do that. Buying in bulk you can get a better deal from Amazon or Riff-raff but by the time you pay the shipping and have to wait for the Christmas present truck to show up I just pay the higher price to get it locally. I would probably place a Riff-raff order for a new cap, the special socket, and a couple filters and see if that fixes anything. Never had a problem with leaks and that’s all I use.
Thread Starter
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FTE Chapter Leader
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From: Langley B.C. Canada
Definitely lubed both upper and lower o-rings before assembling.
Cargo Master
Joined: Apr 2022
Posts: 3,191
Likes: 1,696
Since the fuel pressure regulator is technically a separate part from the fuel filter and the job that it is doing, I'm having a hard time grasping the idea that the fuel filter itself is the cause of this loss of fuel pressure. Yes, it's built into the side of the fuel filter housing, but it's only function is to open up and bleed excess pressure back to the fuel tank once the desired fuel pressure is reached. It doesn't matter how much fuel volume is delivered, if there's more it opens up more and if there's less it closes back down to maintain the desired fuel pressure.
Cargo Master
Joined: Apr 2022
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Yes sir. Just removed it like you did. Leave the spring needle and little plastic valve part out. Then just put the bare tube back in the center and seal the fuel filter. Then won't ever have a issure out of it again. I had the little valve part break in mine one time causing it to have no fuel pressure to the injectors. Years ago.
Fleet Owner
Joined: Jun 2004
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From: Rio Rico, AZ.
If he has a fp gage it's more the likely measured post filter. The FPR is pre filter. So it could have normal pressure there and fuel pressure post filter could be different. That's how some people decides when to change their fuel filter when they see a drop in fp psi on gauge.
Cargo Master
Joined: Apr 2022
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I will agree with the at idle reading or key on engine off reading. But under running conditions especially wide open a partially clogged or filter they will not flow enough will most definitely make fuel pressure drop.