Motorcraft Oil Filter
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Fleet Mechanic
Joined: Nov 2000
Posts: 1,713
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From: In my House
Motorcraft Oil Filter
Is it possible to get a "bad" oil filter? I ask because my 302 has had a low end knock for a while now, and ever since I did the last oil change, it sounds like the noise is much louder. I put in a oil pressure gauge and running 10w40, engine fully warmed up at idle I get about 37psi, and about 50 psi running at 60 on the highway. Also, the noise is only there at idle. Motor runs strong as ever.
Thanks for any comfort,
Rich
Thanks for any comfort,
Rich
Elder User
Joined: Aug 2002
Posts: 773
Likes: 0
From: VA/USA
Motorcraft Oil Filter
[updated:LAST EDITED ON 21-Sep-02 AT 01:37 AM (EST)]It IS possible that it started out bad and it's possible that it went bad as soon as the pressure hit it, which is redundant of me to say, `cause if it went bad that quickly - it was bad from the get-go. I would change-out the filter only (I ALWAYS fill a new filter with oil before install) and see if prob. clears up. Also I'd certainly use a Motorcraft filter. I hope it's not your pump or anything else major. Best of luck, let us know . . .
PS Additionally, I'd IMMEDIATELY change the oil if prob. doesn't clear, like, quick-fast! If the filter did 'implode' to any extent, couldn't there be some filter 'innards' pumping through your motor? "911" gentlemen (and ladies!)!! 
Also it would be helpful to know the year and mileage.
PS Additionally, I'd IMMEDIATELY change the oil if prob. doesn't clear, like, quick-fast! If the filter did 'implode' to any extent, couldn't there be some filter 'innards' pumping through your motor? "911" gentlemen (and ladies!)!! Also it would be helpful to know the year and mileage.
Post Fiend
Joined: Feb 2001
Posts: 6,328
Likes: 124
From: Iowa
Motorcraft Oil Filter
Oil filters are obviously mass produced and not very expensive. It is certainly possible to get a bad one. My 95 with 300-6 seems extremely sensitive to problems with the filter's anti-drain back valve. When I get a bad one, she'll knock on start up after sitting all day. New filter cures it every time. Seems like every fifth oil filter's valve doesn't seal quite right. They haven't been cheap filters either. I am not saying your problem is filter induced though.
'fenders
'fenders
Senior User
Joined: Jan 2002
Posts: 351
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From: Delaware
Motorcraft Oil Filter
> Is it possible to get a "bad" oil filter? I ask because
>my 302 has had a low end knock for a while now, and ever
>since I did the last oil change, it sounds like the noise is
>much louder. I put in a oil pressure gauge and running
>10w40, engine fully warmed up at idle I get about 37psi, and
>about 50 psi running at 60 on the highway. Also, the noise
>is only there at idle. Motor runs strong as ever.
>Thanks for any comfort,
>Rich
37 psi at idle and 50 at highway speed is plenty. I don't think your knock is oil pressure related. Also, "low end " knock, I assume you mean rod or main bearing knock, don't usually occur at idle. Worn rod bearings usually "rattle" at sustained engine speeds, and mains will knock under load, or when revving engine quickly off idle. Your knock may just be a hyd. lifter. I have heard many that would "tap" at idle, and quiet down at normal speed. Also it may be a piston slap making noise at idle.
Anyway, didn't mean to ramble on, with the oil pressure you have, I don't think the oil filter caused the noise to get louder. Just my .02 worth.
Bru
2002 F150 Super Crew
Black 4X4 Lariat
5.4 Engine Ford Chrome Bars
Ford Bedliner
1979 Bronco 351M 75K orig.
>my 302 has had a low end knock for a while now, and ever
>since I did the last oil change, it sounds like the noise is
>much louder. I put in a oil pressure gauge and running
>10w40, engine fully warmed up at idle I get about 37psi, and
>about 50 psi running at 60 on the highway. Also, the noise
>is only there at idle. Motor runs strong as ever.
>Thanks for any comfort,
>Rich
37 psi at idle and 50 at highway speed is plenty. I don't think your knock is oil pressure related. Also, "low end " knock, I assume you mean rod or main bearing knock, don't usually occur at idle. Worn rod bearings usually "rattle" at sustained engine speeds, and mains will knock under load, or when revving engine quickly off idle. Your knock may just be a hyd. lifter. I have heard many that would "tap" at idle, and quiet down at normal speed. Also it may be a piston slap making noise at idle.
Anyway, didn't mean to ramble on, with the oil pressure you have, I don't think the oil filter caused the noise to get louder. Just my .02 worth.
Bru
2002 F150 Super Crew
Black 4X4 Lariat
5.4 Engine Ford Chrome Bars
Ford Bedliner
1979 Bronco 351M 75K orig.
Thread Starter
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Fleet Mechanic
Joined: Nov 2000
Posts: 1,713
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From: In my House
Motorcraft Oil Filter
Thanks for the advise Superbru. It's just really strange when your sitting there at idle with the hot engine, and it knocks like a diesel sound. Anyhow, I did use the screwdriver method as a stethoscope, and the noise is actually toward the back of the pan. I am thinking of removing the 3 "converter to flywheel" bolts and sliding the converter back a bit, the starting the engine, and see if I can isolate it as an "engine" problem. Someone had mentioned to me that it may be a broken fin in the converter?
Thanks guys,
Rich
Thanks guys,
Rich
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