2004 X350 Spark Plug replacement video?
#21
12-13-2023 | 07:05 AM
Senior Member
Joined: Mar 2014
Posts: 650
Likes: 101
From: Michigan
DON'T spray anything in the spark plug wells!!
First always attempt to remove spark plugs with the engine as warm as possible. This will help.
Next BEFORE attempting any spark plug removal use compressed air and thoroughly blow out the plug well. Remember anything in there will fall directly into the cylinder when the plug is removed! Don't create more problems!
If oil is found you know the cam cover seals (Also called plug well seals) are leaking and you will need to repair that (Plan on that because of the age of the car. It's fairly common so not a sign of bigger issues.). I use paper towels to mop up the excess oil and also use paper towels around the compressed air gun to catch what blows out. IF it's bad then I spray carb cleaner in the plug well let sit a bit and then blow it out again. I do this multiple times depending on how bad the oil is. It can get very deep!
Please use the factory plugs and don't try to use "miracle" plugs that make all kinds of promises. The stock plugs are fine. As posted above Jaguar has a 100K miles replacement interval. All the plugs I have changed looked great and I noticed no difference in how the car drove. But again plugs are maintenance and should be changed before they cause problems.
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.
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First always attempt to remove spark plugs with the engine as warm as possible. This will help.
Next BEFORE attempting any spark plug removal use compressed air and thoroughly blow out the plug well. Remember anything in there will fall directly into the cylinder when the plug is removed! Don't create more problems!
If oil is found you know the cam cover seals (Also called plug well seals) are leaking and you will need to repair that (Plan on that because of the age of the car. It's fairly common so not a sign of bigger issues.). I use paper towels to mop up the excess oil and also use paper towels around the compressed air gun to catch what blows out. IF it's bad then I spray carb cleaner in the plug well let sit a bit and then blow it out again. I do this multiple times depending on how bad the oil is. It can get very deep!
Please use the factory plugs and don't try to use "miracle" plugs that make all kinds of promises. The stock plugs are fine. As posted above Jaguar has a 100K miles replacement interval. All the plugs I have changed looked great and I noticed no difference in how the car drove. But again plugs are maintenance and should be changed before they cause problems.
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.
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That would be news to me as I never had a problem in squirting penetrating oil inside the spark plug wells. As I had mentioned previously,, with the aluminum block engines, I would typically allow that penetrating oil to set overnight before attempting to remove the plugs. Actually, that all seemed to work for me. Well, to each his own I suppose, but I sure don't fancy myself staring down at stripped threads. Believe me, something like that would hardly be a rare event with these aluminum block engines.
#22
12-13-2023 | 09:02 AM
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Joined: Aug 2021
Posts: 95
Likes: 25
From: Mount Laurel, NJ
I'm a big fan of penetrating sprays but generally, I only use them when conventional elbow grease isn't the answer so I'll have to wait and see. But, while we're on the subject is there a good source (or part number) for replacing rusted-out hardware? Recently, I had to remove the rear bumper cover to replace a parking sensor and some of the U-nut clips that held it on were so bad I had to cut them off. I was able to find smaller sizes to replace the rusted ones on the underbody splash guards but not these.
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