Great comments from everybody. Some of the reasons why I embraced scope diagnosis are the following:
1. Catching intermittent problem that are hard to trace
2. Minimal disassembly of engine to get valve timing, ignition timing and other engine performance related issues.
3. Checking the integrity of network communication lines and serial decoding of communication data.
4. The master of all which is in-cylinder pressure waveform analysis. With this, the state of health of engine can be determined.
5. Checking fuel pressures, transmission line pressure and other pressures you are interested in.
6. Cooling system check.
7. ABS system that is equipped with MRE or Hall effects sensors.

The list goes on and on..

Agbabiakara:
Great comments from everybody. Some of the reasons why I embraced scope diagnosis are the following:
1. Catching intermittent problem that are hard to trace
2. Minimal disassembly of engine to get valve timing, ignition timing and other engine performance related issues.
3. Checking the integrity of network communication lines and serial decoding of communication data.
4. The master of all which is in-cylinder pressure waveform analysis. With this, the state of health of engine can be determined.
5. Checking fuel pressures, transmission line pressure and other pressures you are interested in.
6. Cooling system check.
7. ABS system that is equipped with MRE or Hall effects sensors.

The list goes on and on..

Have u ever witness the dreaded timing advance and retardd codes or cam/crank correlation issue , knowledgeable tech with good scope will slice such seemly complex issue like piece of cake .

I thought this thread was for educational purpose, yet you all keeping laying emphasis on the importance of scope diagnosis and how you have been using it to solve a thousand and one problem but no one have been able to state a problem he encountered in the past and a step by step explanation of how he solved it using an oscilloscope so that learning can take place. Or is it just to inform us that u make use of scope?

Mrford:
I thought this thread was for educational purpose, yet you all keeping laying emphasis on the importance of scope diagnosis and how you have been using it to solve a thousand and one problem but no one have been able to state a problem he encountered in the past and a step by step explanation of how he solved it using an oscilloscope so that learning can take place. Or is it just to inform us that u make use of scope?

loud eet

Mrford:
I thought this thread was for educational purpose, yet you all keeping laying emphasis on the importance of scope diagnosis and how you have been using it to solve a thousand and one problem but no one have been able to state a problem he encountered in the past and a step by step explanation of how he solved it using an oscilloscope so that learning can take place. Or is it just to inform us that u make use of scope?

The importance has to be highlighted first, then case studies can now follow. Like you said, the thread is for knowledge sharing. You are welcome on board. In case you have known good waveform of any component, do not hesitate to share. @ autologic shared a thread where he used a scope to solve abs issue.

Scope owners ! Where are you

why has there been no update on this thread?
we can sure discuss and analyze scope results, images etc.

We may start at any point. Exchanging of known good crank and cam waveform may be a good idea.

Infact, owning a scope now is a MUST to be able to effectively diagnose modern cars and also to minimise a lot of come backs which in turn result to financial loss and wasted energy.

Agbabiakara:
Scope owners ! Where are you

Still have lot and lot of scope Diagnosis case study coming on soon , stay tuned

@autologic kindly bring back this thread back to life. I am ready to learn.

Thank you in advance.

Happy new year guys ,let kick this thread running with series of cases using advance Diagnosis set up.
This is a scope capture of Diagnosis of bad Headgasket issue of a Lexus Es350 2012
Customer complaint: intermittent hesitation on high speed and intermittent misfire .
Technician initial test & observation : scanning on the vehicle , no dtc codes on powertrain but intermittent and random misfire observed on all cylinders on the misfire counter pids and further test confirm that the misfire is coming from the engine which necessities going engine Diagnosis with scope
And with very limited effort , scope capture yielded the culprit within few minutes saving us huge resources on labor and time that would have been wasted using the traditional method depicted on waveform below .

Analysis :As shown below ,loss of cylinder pressure are confirmed on cylinder 6,1,4 and 5 which is demonstrated on the RC captured below .
However to dig deeper on what is responsible for loss of pressure , further test are conducted which are shown on the Headgasket pressure waveform showing spikes yielded by the cylinders with low pressure . which truly confirm that the loss of cylinder pressure is due to Headgasket leakage and really prove the facts that a picture is worth a thousand words!
And the beauty of this test is that ,it took less than 10 minute to see thru the tiny internal details of an engines that can take huge labour of days to dismantle !! And also the same time that will be used to see Tru internal of 4 cylinder will used to see 12 cylinders, power plant engines ,and even huge heavy -duty diesel vessels engine
Jsut to prove that Investment in training and modern sophiscated technology is truly bliss and cool

After the issue has been resolved , I will upload the capture of known good after fix for comparison sake .

Nice one.