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Is this high mileage vehicle? If so, I doubt changing oil pump will help, you may need engine overhaul?
Sometimes, you use an analog pressure gage in place of the oil pressure sending unit, to read actual oil pressure. My info says at idle, oil pressure 4.3 psi or more. At 3000 rpms, it says 43--78 psi.
I looked at info for 1500--5.7L engine. 6 psi @ 1000 rpms 18 psi@2000 rpms 24 psi @ 4000 rpms
Sometimes, you can use analog gage in place of oil pressure sending unit and double check oil pressure that way. If oil pressure is actually low, if high mileage engine, I doubt replacing oil pump will help. I just wanted to add, check oil pressure engine warmed up.
have a 2005 ford focus and a lifter is making noise already put 5 bottles of fuel treatment in fuel i also change my oil every 2500 miles pkus i add a bottle of engine honey .are we taljing about alot of money to fix lifter doesnt burn oil
Hi Christo. If you hear a tappet noise when the engine is started, and it goes away after a few seconds, if is not a very serious problem. What is happening is that you have Hydraulic lifters that maintain they're adjustment when the motor is not running. One of the lifters is collapsing. When you start the engine it pumps back up and works. Since lifters are at the top of the engine, you should that you use. It is called "Sea Foam". It is an excellent product to ad to the oil. It helps keep the engine cleaner and removes any moisture from the oil. It is great with hydraulic lifters. Just so you know the difference. If you have a sticking lifter, you will have a constant tapping sound. I have used Sea Foam to un-stick lifters successfully. IMPORTANT NOTE: A WORD ABOUT THE REPLACMENT OF THE KIA RIO TIMING BELT.
It is recommend that the belt be changed at 60,000 miles. I also recommend that the dealer do it. If the car is under warranty you must tell the dealer to replace it. If you do not tell them to replace it, THEY WILL NOT. If the belt breaks, it will DESTROY the engine. Hope this is helpful to you. Happy New Year Greetings, Mark
BAD LIFTERS WILL MAKE A NOISE.IF VALVE LIFTERS AND LOWER SPRING SEALS BEEN REPLACED AND LIFTERS STILL NOISEY.EITHER ENGINE OIL TOO THICK OR ENGINE NEED OIL CHANGE + FILTER CHANGE.DIRTY OIL CAUSE LIFTER NOISE OR OIL PASSAGES IN THE CYLINDER HEAD STOPPED UP NOT ALLOWING LIFTERS TO GET THE RIGHT AMOUNT OF OIL.OR OIL PRESSURE TO LOW DUE TO FAULTY OIL PUMP.OIL PRESSURE SHOULD BE 29 PSI @2000 RPM. TRYING ADDING SOME SEAFOAM CLEANER IN CRANK CASE IF OIL PASSAGES STOPPED UP IT WILL CLEAN OUT OIL SLUDGE.GO TO AUTO PARTS STORE TELL THEM YOU NEED SEAFOAM.AFTER 500 MILES YOU NEED TO CHANGE OIL AND FILTER AGAIN. SEE IF THIS HELP BEFORE SPENDING ALOT OF MONEY .
1 of two things. They are hyd lifters so there is no adjustment to be done. So it is either a lack of oil pressure or an odd thing but does happen, a small piece of derbis will get into the pressure bleed hole, the oil is push out as the camshaft comes up to open the valve, the lifter will collapes and not re-pump up due to the hole being closed off. Im quite sure AMG rquires Mobil1 oil, sometimes extream temps either higher or lower will change viscosity requirements. you may need the 15W 50 to maintain enough pressure where you are at or it is possible the oil is broke down so bad that it is no longer able to maintain the correct amount of PSI. 1st things first. Put a mechanical oil pressure gauge on the motor, observe pressure after complete warm up. If it is too low go to the 15W 50 weight oil. If it is an oil pressure issue two things should happen. 1 the lifter making noise should be farthest from the pump. If not you should do a very carefull inspection check psi with mechanical gauge 1st if it's low, then you'll have to find the causeor cause. if psi is within spec you have a bad lifter IE: dirt or collapsed spring.
ENGINE CLICKING NOISES A clicking or tapping noise that gets louder when you rev the engine is probably "tappet" or upper valvetrain noise caused by one of several things: low oil pressure, excessive valve lash, or worn or damaged parts. First, check the engine dipstick to see if the oil level is low. If low, add oil to bring it back up to the full mark. Is the engine still noisy? Check your oil pressure. A low gauge reading (or oil warning light) would indicate a serious internal engine problem that is preventing normal oil pressure from reaching the upper valvetrain components. The cause might be a worn or damaged oil pump, a clogged oil pump pickup screen or a plugged up oil filter. Using too thick a viscosity of motor oil during cold weather can also slow down the flow of oil to the upper valvetrain, causing noise and wear. COLLAPSED LIFTER NOISE Worn, leaky or dirty lifters can also cause valvetrain noise. If oil delivery is restricted to the lifters (plugged oil galley or low oil pressure), the lifters won't "pump up" to take up the normal slack in the valvetrain. A "collapsed" lifter will then allow excessive valve lash and noise. VALVE LASH NOISE If you can rule out lubrication-related problems as a cause, the next step would be to remove the valve cover(s) and check valve lash. On older import engines, mechanical lifters require periodic valve lash adjustments (typically every 30,000 miles). Too much space between the tips of the rocker arms and valve stems can make the valvetrain noisy -- and possibly cause accelerated wear of both parts. To measure (and adjust) valve lash, you need a feeler gauge. The gauge is slid between the tip of the valve stem and rocker arm (or the cam follower or the cam itself on overhead cam engines) when the piston is at top dead center (valve fully closed). Refer to a manual for the specified lash and adjustment procedure. Also, note whether the lash spec is for a hot or cold engine (this makes a big difference!). On engines with hydraulic lifters, oil pressure pumps up the lifters when the engine is running to maintain zero lash in the valvetrain. This results in quiet operation. So if the rocker arms are clattering, it tells you something is amiss (bad lifter or worn or damaged parts) or the rocker arms need adjusting.
Let me know if you have any other questions. Thanks for rating my response and for using FixYa!
CHECK THE OIL PUMP SUMP TUBE O-RING. THEY COLLAPSE CAUSING THE OIL PUMP TO PULL AIR INSTEAD OF OIL. TO VERIFY OVER FILL ENGINE OIL AND CHECK ENGINE OIL PRESSURE. THIS IS A COMMON PROBLEM ON ALL NEWER GM V-8 ENGINES : 4.8 5.3 5.7 6.0