Wrong! Wrong! Why out guess the engineers that design the motor. Use 5-20 Castrol oil and factory filter what the manufacture recommends, and you will be good.
I worked at Ford dealer as a Tech when customer comes in with F150 Ford 4.6 motor with less than 6000miles on it. Knocking so bad. Wrong...
When was the oil changed? What brand and weight of oil is used?
Wrong brand oil and wrong oil weight will cause your problems. Use factory recommended Castrol oil and the right weight. See if that helps.
Right way is factory way. Replace the pan with a new factory pan and ZF fluid. Flush is OK.
Notice the magnet holding steel filings, you won't get this out with a flush. pan is also the filter.
Ran into the same problem. At first rough idle on cold start. Random miss fire on startup.
Engine miss 2-4-6-. Guess what fixed this problem. # 4 injector carbon up.
Replaced # 4 injector and clean the intake manifold runners with upper cylinder cleaner injected through intake vacuum fitting...
Poor quality of work at that shop. Good tech always checks the battery and electrics first. How did this tech diagnose high pressure fuel pumps? Electrics are very crucial in these vehicles. Poor weak battery cause so much failed software in ECM.
Coolant Dye and UV light is next on your list. Also Ear Endoscope camera can help in tight spots. Pressure tester also a must.
Coolant leaks are a ***** to find. Second guessing cost money and time. I have been down that road before.
I did mine over a year ago. Still doing its thing for $45.00. My photos.left new module right defective.
bottom photo you can see the connector right side.
Some people always try to second guess recommendation over the Engineers that built the motor. Use what factory recommends. Castrol Extend Edge will work, so will Amsoil .
Mobil one is not recommended, go to Mobil oil site and check oil requirements for your vehicle.
here's proof...
I hope you got it figured out by now. If it feels loose, and you lift it slightly, then its the hose retainer under the manifold holding it.
Also rear egr bolts. Let us know what you find?
5.0L My guess, high pressure fuel injector pumps. On start, noise disappears after 20-25 seconds? Nothing to worry about.
Injector fuel pressures high 2000psi. Direct port injection system.
Try switching the COP (Coil Over Plug) with good cylinder. If code still there,than you can eliminate the coil. Try doing that with the spark plug. Should eliminate two items.
You still did not mention what codes where pulled.
One year and no one know what going on with your vehicle??
This is the page for you:
https://www.carcomplaints.com/Land_Rover/LR4/2012/
I had the same decision to make. The Range Rover SC won. Drop down tailgate, capaciously cabin, smooth ride.
Need I say more. If its good enough for Royalty. Its good enough for me.
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