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    2011 LR4 Misfire/rough idle

    As a follow-up to my issues. I put everything back together and it ran fine again, for a couple of tanks of fuel. I added seafoam the first tank and BG44 the second. The next tank was premium only and my misfire immediately returned. I pulled the codes and again it was 1,3,5,7 misfire. I pulled...
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    Camshaft Profile Switching Solenoid 5.0L V8

    You have better eyes than I do. I thought that 8 was a 3. Still can't find a new stock item. I have pulled both from my engine and they both do the same thing. No spring return. I am going to assume that this is normal and reinstall. At least they are clean now. Both read about 7.5 ohm. Not the...
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    Camshaft Profile Switching Solenoid 5.0L V8

    Question 2: LR025967 looks like the same thing but only fits the LR2
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    Camshaft Profile Switching Solenoid 5.0L V8

    I removed the bank 2 CPS solenoid from the rear of the intake head to see if it was working. used battery power to operate the solenoid and it wouldn't move. Cleaned it up and it started to operate, but not retract when de-energized - no spring return. Questions: Does this solenoid have a...
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    2011 LR4 Misfire/rough idle

    With the valves closed, I cleaned the valve with a plastic scraper to knock off the large chunks of carbon and had a small vacuum tube down in there to clean it up. I then used air intake cleaner to dilute the rest and vacuumed it out. I saw the thread about walnut blasting as an option as well...
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    2011 LR4 Misfire/rough idle

    Leak down results 2 = 89% 1 = 90% 4 = 25/50/75 3 = 81% 6 = 85% 5 = 94% 8 = 99% 7 = 83% #4 was concerning. One of the intake valves was leaking all the way around the sealing edge. First pass was 25% so I cleaned it the best I could and then it went to 50%, cleaned once...
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    2011 LR4 Misfire/rough idle

    New to the site. I have owned a LR4 2010 HSE 5.0 for two years now. A couple of weeks ago I noticed I had a coolant smell but no obvious leaks. I ordered a water pump and thermostat to replace and kept an eye on the coolant. A few days later while driving the vehicle stumbled and threw a...

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