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Knocking/Ticking Noise in 4.0L

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Old 12-22-2019 | 01:46 AM
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Default Knocking/Ticking Noise in 4.0L

I am nowhere near an expert, especially with engines. It drives fine with the noise, but I am just wondering if anyone knows what the sound is here so I can fix it. Any help would be appreciated!
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Old 12-22-2019 | 09:49 PM
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its too hard to tell from those vids

you need to place mechanics stethoscope on the head, to see if you can identify what cylinder it is coming from (sounds like top end)

is there any indication of loss of performance ?

(one way to check is pull each spark plug wire while the engine is running..the drop in RPM should be the same each time...if you pull one and the motor doesnt change much, that means that cylinder is not functioning as it should)...be careful not to get a jolt from the plug wire
Old 12-22-2019 | 09:53 PM
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Originally Posted by awg
be careful not to get a jolt from the plug wire
I can confirm that it hurts, got zapped 5-10 times by a Ford Focus on Friday before I could move my hand away.
Old 12-23-2019 | 07:31 AM
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Originally Posted by boxburn
I can confirm that it hurts, got zapped 5-10 times by a Ford Focus on Friday before I could move my hand away.
Can confirm this same thing, as it hurts..

Getting shocked like this may also be able to result in death to occur if the electricity makes it to hit the hearts electrical axis on the wrong waveform, to cause a phenomenon know as Torsade de pointes, which is characterized by a gradual change in the amplitude and twisting of the QRS complexes around the isoelectric line.

Using insulated gloves and a pair of electricians pliers will all but eliminate most of the worry.
Old 12-23-2019 | 09:34 AM
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Originally Posted by Noah911
Getting shocked like this may also be able to result in death to occur if the electricity makes it to hit the hearts electrical axis on the wrong waveform, to cause a phenomenon know as Torsade de pointes, which is characterized by a gradual change in the amplitude and twisting of the QRS complexes around the isoelectric line.
No.
Old 12-23-2019 | 10:13 AM
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What do you mean NO?

I have a response. But, it is a little off topic.. It does also still apply specifically to the topic of this thread in ways too though.

Do you want to hear?
Old 12-23-2019 | 10:22 AM
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Originally Posted by Noah911
Do you want to hear?
Sure!

Be advised, however, in my real (former) profession, I was a "Health Care Professional".
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Old 12-23-2019 | 12:06 PM
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Thank you for warning me first! I take it all back.. if this is the case. Phew, that was a close one!
Old 12-23-2019 | 12:58 PM
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Originally Posted by Dave51
Sure!

Be advised, however, in my real (former) profession, I was a "Health Care Professional".
fact: if you so much as even look at a spark plug wire wrong, you'll certainly drop dead on the spot, possibly even explode, or combust............yeshuh


93cherokee I agree a mechanics stethoscope will help you greatly & its cheap. Any chance you can video the hood open again while revving the throttle plate a bit?
Old 12-23-2019 | 01:18 PM
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Originally Posted by Dave51
Sure!

Be advised, however, in my real (former) profession, I was a "Health Care Professional".
Dave, it's OK to say "Male nurse" around here. We don't judge, much. And when we do, it's mostly around engine oil choices...
Old 12-23-2019 | 01:46 PM
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I sincerely hope I do not get into any kind of trouble by the site administration for straying too far off topic? I apologize ahead of time if this is what I am doing.

The only way it relates to the main topic is by way of the side topic started regarding the dangers associated with recieving an accidental electric shock. Which is a real danger. So, it does apply in this way.

For my follow-up; As a fully trained Emergency Nurse critical care healthcare provider. What are the reasons for using synchronization during cardioversion? Are there certain heart rhythms in which it is advised not to shock? For instance, what would happen if you were to deliver an unsynchronised shock to a patient with a history of congenital long-QT syndrome type 1 (LQTS1)? Is it true a person with this particular syndrome may enter into a lethal rythm should an unsynchronised shock be delivered during the vulnerable period from the middle and second half of the T wave? What rythm would be most likely to occur?

Long-QT syndrome type 1 (LQTS1) predisposes people to malignant polymorphic ventricular arrhythmias (in particular, torsades de pointes) which can lead to syncope, cardiac arrest or sudden cardiac death.

An electric shock occurring on the heart outside of the refractory QRS period has the possibility to send a person into Ventricular Fibrillation (a fatal rhythm) even without any underlying dysthymia. In the case of a person with Long-QT syndrome being hit by an electric shock during the vulnerable period.. the rythm they are likely to enter into is torsades. Which as we know it this rythm has a very high probablity to quickly lead right directly into Ventricular Fibrillation without immediate prompt intervention.


It is okay to look at the spark plugs in the wrong way though.. I don't agree with that statement any at all

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Old 12-23-2019 | 01:57 PM
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Originally Posted by PatHenry
Dave, it's OK to say "Male nurse" around here. We don't judge, much. And when we do, it's mostly around engine oil choices...
LOL! No, I had a number of technical credentials, including Invasive Cardiology.

As an aside, it's not voltage that's the problem, it's amperage x time. The danger zone is about 100-200 milliamps. The cardiac arrythmia is pretty much ventricular fibrillation. Had one incident where a father-son were working with a aluminum ladder and touched the incoming power line. Horrible.
Old 12-23-2019 | 01:58 PM
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Originally Posted by Noah911
I sincerely hope I do not get into any kind of trouble by the site administration for straying too far off topic? I apologize ahead of time if this is what I am doing.

The only way it relates to the main topic is by way of the side topic started regarding the dangers associated with recieving an accidental electric shock. Which is a real danger. So, it does apply in this way.

For my follow-up; As a fully trained Emergency Nurse critical care healthcare provider. What are the reasons for using synchronization during cardioversion? Are there certain heart rhythms in which it is advised not to shock? For instance, what would happen if you were to deliver an unsynchronised shock to a patient with a history of congenital long-QT syndrome type 1 (LQTS1)? Is it true a person with this particular syndrome may enter into a lethal rythm should an unsynchronised shock be delivered during the vulnerable period from the middle and second half of the T wave? What rythm would be most likely to occur?

Long-QT syndrome type 1 (LQTS1) predisposes people to malignant polymorphic ventricular arrhythmias (in particular, torsades de pointes) which can lead to syncope, cardiac arrest or sudden cardiac death.

An electric shock occurring on the heart outside of the refractory QRS period has the possibility to send a person into Ventricular Fibrillation (a fatal rhythm) even without any underlying dysthymia. In the case of a person with Long-QT syndrome being hit by an electric shock during the vulnerable period.. the rythm they are likely to enter into is torsades. Which as we know it this rythm has a very high probablity to quickly lead right directly into Ventricular Fibrillation without immediate prompt intervention.


It is okay to look at the spark plugs in the wrong way though.. I don't agree with that statement any at all
I don't believe it's off topic at all.
A suggestion was made to pull spark plug wires while the engine is running. This IS a dangerous action to take and at a minimum risks some discomfort, but in the rare "worst case scenario" could be fatal.
Insulated gloves and electrician's pliers is basic common sense if you're going to be doing such a thing.

Now if you want to get into a debate about whether the possible "worst case scenario" is due to the cardiac conditions and behavior you've suggested - perhaps. However, if you can point to the appropriate peer reviewed published study from a credible journal.... then I think that's interesting enough to debate - on-topic or not....
Old 12-23-2019 | 02:02 PM
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That is how I felt about the situation myself too. There is no debating the subject though.. It is common knowledge to a well trained critical care provider.
Old 12-23-2019 | 02:03 PM
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Originally Posted by Dave51
LOL! No, I had a number of technical credentials, including Invasive Cardiology.

As an aside, it's not voltage that's the problem, it's amperage x time. The danger zone is about 100-200 milliamps. The cardiac arrythmia is pretty much ventricular fibrillation. Had one incident where a father-son were working with a aluminum ladder and touched the incoming power line. Horrible.
I was being facetious. Except about the oil stuff. Some of us still remember the heroic final stand of ExtraShaky.
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