Was wondering if anybody here has this problem, after I change my oil and filter on my 04 F-150 3V when I first start it until the oil pressure comes up maybe 5-10 seconds there is a noticable knocking sound around the oil filter area of the engine, only happens the first start after an oil change have even tried 10w30 synthetic blend oil instead of the recommened 5w20 makes no difference am concerned may be doing some excess engine wear, I have a pathetic ford dealer here and it is hard to get any real answers on much of anything?? Thanx

 

Make sure that you are priming the oil filter correctly. ~1/2 quart in the filter itself before installing on the truck. Make sure to get the seal also, or else you will picking it off in peices.

 

No problem on geting the old seal off but how do you keep any oil in the new filter it lays on its side and is hateful at best?? Are these trucks filters supposed to be primed?? Thanx

 

Some engine noise on a dry filter isn't unusual. And don't use 10W30 with that engine.

 

The anti-drain back valve in the filter is malfunctioning. Get a new quality filter and install it on the engine. I can only guess that the one you have on it is orange. The anti-drain back valve keeps the filter full of oil and when you start the engine, the oil pump does not have to fill it before oil is circulated thru the engine. That is the reason you are hearing engine clatter at start up but it goes away in a few seconds. Wear will be accelerated using a filter with a bad anti-drain back valve.

 

These engines have chain driven cams that depend on oil pressure for the chain tension take up.
On a 3 valve motor, the noise could be even more touchy with that extra cam drive system and adjustable drive gears.
Anything from those tensioners to rod and main bearings can knock until the oil is picked up and comes up to the pump pushing air ahead of it.
This is the same thing that happens when some oil filters allow to much drain back and often cause a short knocking session at cold start up.
I have an oil pressure gauge and can count almost 5 seconds before oil pressure comes up, on an oil and filter change but this engine is totally silent as far as knocks and noise goes starting and running. This 4.6 is a gem the way it runs and pulls a 6000 lb trailer.

 

you can fill the filter by cranking the engine and holding the gas pedal to the floor. this will stop it from starting and let it fill with no load on the engine. This must be better than starting it with an empty filter.

 

I think you misunderstood my message it only happens on an oil and filter change the first time and no I do not use fram only motorcraft filters.

 

Thanx for the info, but what do you think on the oil I have read so much on oil that I am confused many say 5w20 is all about mileage numbers and that 10w30 will give far better long engine life protection have read that from 2 different supposed oil experts who were lubricant engineers, I beleive one was from Mobil and one from amsoil and of course they recommend a full synthetic, I am usinng a motorcraft synthetic blend.

 

Yes, some of the reasoning behind using a thinner oil is to squeak out every bit of fuel economy Uncle Henry can, but more importantly, the VCT system doesn't take kindly to using oil thicker than what's recommended. Over the long run, that may cause valvetrain problems.

 

the 5/20 is designed for two things, gas milage and emissions control. Thats why you see LEV and ULEV on lots of cars, especially jap cars, that run 5/20. (LEV= Low Emissions Vehicle, ULEV Ultra Low ....)

I know a ford tech once, would only run 20/50 in his taurus that called for 5/30. And I watched his car clock over 200K miles. It really just depends on you. During the warranty period, run recommended. After warranty, run what you want./

And it is typical in just about every singe ford truck to sound like the bottom is going to fall out after an oil change. I wouldn't waste another minute of thought on it

 

Mine sounds just fine after an oil change. The first few times I did not pre-fill the filter, it never made any strange noises when I started it up.
I started pre-filling it and it sounds the same as always.

Maybe on the 3V engines its more noticeable if you dont prefill...

 

and one other thing, pre-filling the filter is something that has been done industry wide only in diesels, since the beginning of time. I have never known a ford tech or a goofy lube tech that pre-filled a typical car filter, becuase it is not required or necassary. And thats a fact

 

Thanx for the info Navi don't think I will spend anymore time worry about the noise!

 

Glad I could help!