I am losing my mind! - My update on the 2000 4.0 V8 S-Type
#21
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Step back from the ledge! Don't jump!
Unless you are a climate change researcher, don't aim for a predetermined conclusion. Go where the troubleshooting actually leads you, not where you fear it might go.
The conclusion you have reached is HIGHLY unlikely. To have oil leak out like you're thinking, you'd have to have two major issues active at one time. You'd have to have severely worn piston rings and/or valve seals to dump that much oil into the exhaust. And then you'd have to simultaneously have a major exhaust leak to let that oil escape.
Now it does appear you have an exhaust leak. But I'd be willing to bet your reputation that the oil you're seeing is the remnant of what you have previously added to the cylinders. To fully clear it out, It might take some hard driving for 50-100 miles. (If using the metric system, that 50-100 miles) If you've only been running at idle or putzing around the neighborhood, you've still got plenty of excess oil in there. Don't scare yourself of some major internal damage.
Some steps to take:
Fix the exhaust leak. This can affect what the O2 sensor sees and contribute to rough running.
Review all previous vacuum leaks that were repaired. If you insist there are no leaks because you replaced those suspect gaskets, I shall force you to watch "Beaches: The Director's Cut" until you beg for mercy.
https://m.youtube.com/watch?v=G59ivoXtmW4
There are no guarantees a new gasket is sealing properly. Maybe you've got a warped casting or a gasket didn't fit properly. Retest to be sure.
Consider replacing the coils. This has been previously discussed.
Check the fuel pressure at the injector rail with a mechanical gauge. This was suggested in your other thread, with no mention that it was accomplished. Do not rely solely on the scanner reading. The poor computer will happily regulate fuel pump output inaccurately to match a bad sensor and never set a fault code.
Unless you are a climate change researcher, don't aim for a predetermined conclusion. Go where the troubleshooting actually leads you, not where you fear it might go.
The conclusion you have reached is HIGHLY unlikely. To have oil leak out like you're thinking, you'd have to have two major issues active at one time. You'd have to have severely worn piston rings and/or valve seals to dump that much oil into the exhaust. And then you'd have to simultaneously have a major exhaust leak to let that oil escape.
Now it does appear you have an exhaust leak. But I'd be willing to bet your reputation that the oil you're seeing is the remnant of what you have previously added to the cylinders. To fully clear it out, It might take some hard driving for 50-100 miles. (If using the metric system, that 50-100 miles) If you've only been running at idle or putzing around the neighborhood, you've still got plenty of excess oil in there. Don't scare yourself of some major internal damage.
Some steps to take:
Fix the exhaust leak. This can affect what the O2 sensor sees and contribute to rough running.
Review all previous vacuum leaks that were repaired. If you insist there are no leaks because you replaced those suspect gaskets, I shall force you to watch "Beaches: The Director's Cut" until you beg for mercy.
https://m.youtube.com/watch?v=G59ivoXtmW4
There are no guarantees a new gasket is sealing properly. Maybe you've got a warped casting or a gasket didn't fit properly. Retest to be sure.
Consider replacing the coils. This has been previously discussed.
Check the fuel pressure at the injector rail with a mechanical gauge. This was suggested in your other thread, with no mention that it was accomplished. Do not rely solely on the scanner reading. The poor computer will happily regulate fuel pump output inaccurately to match a bad sensor and never set a fault code.
#22
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S-Type Owner (02-28-2021)
#24
#25
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kr98664, I hereby swear I already ordered all the parts needed to do the compression test, the fuel pump test and got the 8 new coils. Not only that, I will take the car for a hard drive as well and follow all other instructions you mentioned. I shall have updates on Thursday.
Now, with all that said and promised, please, deliver us from any other movie/torture recommendations. After this point on I will consider it as gratuitous sadism.
Now, with all that said and promised, please, deliver us from any other movie/torture recommendations. After this point on I will consider it as gratuitous sadism.
The following 2 users liked this post by The_Portuguese:
kr98664 (03-02-2021),
S-Type Owner (03-02-2021)
#27
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Last edited by kr98664; 03-02-2021 at 06:24 PM.
#28
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kr98664, I hereby swear I already ordered all the parts needed to do the compression test, the fuel pump test and got the 8 new coils. Not only that, I will take the car for a hard drive as well and follow all other instructions you mentioned. I shall have updates on Thursday.
Now, with all that said and promised, please, deliver us from any other movie/torture recommendations. After this point on I will consider it as gratuitous sadism.
Now, with all that said and promised, please, deliver us from any other movie/torture recommendations. After this point on I will consider it as gratuitous sadism.
The following users liked this post:
kr98664 (03-03-2021)
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