03 expedition 5.4 V8 ticking noise from engine. oil was low changed the oil but still ticking

You mention a "ticking" sound,,is this from the top or bottom of engine..?

Does the ticking go on acceleration or increase with engine speed..?

A ticking noise from the top usually indicates camshaft/valve noise..

Run your engine until at normal temperature, then turn off and leave for 5 minutes for oil to settle..

Make sure your car is on level ground and check your oil level..wipe dipstick and check it again, make sure you push the dipstick all the way in an re check oil level. Top up if necessary.

The best thing to do is remove old oil filter. Drop the old oil and fit a new filter, top up with new oil, run the car and check oil level again, top up if necessary.

Low oil and old oil can wear thin and cause ticking noise from top of engine, and will also NOT PROTECT your engine...oil is the blood of your car, check levels weekly at most and change every 12 months or as recommended by your car booklet.. Use the BEST oil you can afford.

1. Make sure you have a detailed description of the noise is concerned with, including whether the noise is occurring at idle or above idle speed (does it disappear above 1,200 rpm), and if the engine is cold, hot or both when the noise is occurring. These engines generate a lot of "normal" noises 2. Determine what environment is in when the noise is most noticeable to them (inside passenger compartment, next to building with/without the driver and/or passenger window open, or beside the wheel well). Validate by using your own perception. 3. Compare the noise generated with a new vehicle, if available, with an ENGINE build date of 3/30/2005 or later on Mustang and 4/18/2005 or later on F-150 to F-350, Expedition and Navigator vehicles. if the noise is the same, the noise is normal and would be a characteristic of the vehicle. Do not continue with this bulletin. 4. Diagnose noise when engine is at normal operating temperature. Verify oil temperature by using a diagnostic scan tool and monitoring the engine oil temperature. 5. Check the type of oil filter installed on the vehicle. A dirty or clogged filter may cause a pressure drop. Look for aftermarket brands not recognized in the market or a production filter that has gone beyond the standard Ford recommended change interval. 6. Check for signs of oil brand used and viscosity.
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What is the oil pressure when ticking starts? How many miles on engine? How often do you change oil? What oil do you use? What brand filters do you use? Is this a Northstar engine?

High mileage Northstars (and others) will have tappet noise as they wear. You might try adding a quart of Marvel Mystery oil at next oil change, but if low oil pressure is the problem, try changing to a slightly thicker oil, say 20-50. If you don't know what the oil presure is, install a mechanical guage. I had a freind with a low pressure problem on very high mileage car who began using straight 50W oil and car ran another 3 years/60K miles before dying.

The ticking noise could be a faulty hydrulic valve lifter. When last was the oil & filter changed, it coul be that the oil is thick and not going through to the lifters and when it warms up the oil is thin. It could be that the engine is need of an overhaul as 148.000 miles is 238.182 Kilometers and that is a hi milage.

Sounds like a valve lifter or in queens english a hydraulic tappet ,Now what i used to do on the rover V8 was to add a tin of gunk brand name exterior engine cleaner and then let customer have the car back and do some miles,or as soon as the noise stopped ,then change the oil and filter and add the diesel/petrol turbo engine oil as this is detergent and then change the oil every 5/6000 miles with a oil filter every third oil change ,if no engine cleaner then try half a litre of diesel or just change the oil for one detergent type diesel engine oil you will not hurt the engine using this oil the cheaper it is the better as well .In extreme cases i give a 2 second squirt of fairy washing up liquid to the oil as well ,has to be fairy mind them cheapos are no good for this job .Stop worring about it and just do as i say

Most likely a lifter slow to accept oil and "pump up". This is ometimes caused by possibly need of oil change or wear to the internal parts of lifter.

I would not believe any thing some parts store loser told you. Theres not a V8 built that doesnt have hydraulic lifters, unless its some fancy racin engine. It has hydraulic lifters, but unless you dont change your oil every 5k miles and/or use some cheap oil, there should be no problems. You should have a real mechanic look at it, and verify that you have good oil pressure. If it does, I would change the oil and use some MOBIL 1 and drive it, the oil will clean the lifters somewhat. If the eng has low oil pressure, that will need to be addressed.

it is possible lifters noise or rokers change oil and use thiker oil and see if noise get less

usually when there is a ticking noise that changes as the rpm of the engine changes it could be that not all the components in the engine are properly lubricated. you may notice that noise occur temporarily when a car has been sitting for a while and all the oil runs to the bottom of the engine. as soon as the engine is running for a couple of seconds the noise goes away because oil is splashed on all those components. i recommend you check your oil level. i used to have a stealth with an oil leak...and i always knew when the oil was low because i would start to gradually hear the ticking noise. usually and hopefully that's it. it either that or you have bend rods that are slightly tappin on something else in there. but let's be a lil optimistic.