@@romanosautomotive I have a slow brain had to look at it again. I suppose when we see an upward curve on the spark line we shouldn't just think it's a lean misfire more so it's a sign combustion isn't taking place and we need to find out why.
Excellent tutorial. I learned a lot about secondary waveforms, and what carbon tracking looks like on a scope. The explanation about running out of fuel to burn and it's effect on the waveform was totally new to me. Keep it up!
Good video .. but u went straight to the problem cylinder .. I have a miss on possibly one cylinder out of 6 .. no codes to tell me which one.. It is an off idle miss just as u accelerate .. no miss at idle .. no miss at cruise . No miss under power
The secondary ignition waveforms led me to the misfiring cylinder. Are you able to see any secondary waveforms at idle and under brake torque? Although it doesn't misfire the same, you might see an abnormality in one of the cylinders which can help you narrow it down
Absolutely Trevor. If this was on a system where you could access the primary waveform, it would looks the same. There is no possible fault in the secondary that won't be replicated in the primary and vice versa.
Excellent diagnostics mate , more top mechanics are needed like you .
Thank you and thanks for watching!
Well explained. We are all learning from each other. When I seen the burn line sloping up I thought I was looking at a lean misfire.
Thanks D. D - At a quick glance, it could definitely be interpreted like that. I hope what I said made sense. I'm not too good at explaining
@@romanosautomotive I have a slow brain had to look at it again. I suppose when we see an upward curve on the spark line we shouldn't just think it's a lean misfire more so it's a sign combustion isn't taking place and we need to find out why.
Perfect!
very nicely done Rob. Nothing wrong with your teaching style at all.
Thanks Kirk, much appreciated brother!
Well done mate, great presentation 👏👌👍
Thanks Gerard!
the POWER of secondary waveforms!
and you are a good teacher Rome:)
Haha, if I can one day explain things the way you do so clearly, I will be a happy man! Thanks Denis!
Excellent tutorial. I learned a lot about secondary waveforms, and what carbon tracking looks like on a scope. The explanation about running out of fuel to burn and it's effect on the waveform was totally new to me. Keep it up!
Thank you Jon!
Love the ScannerDanner test 👌🏼
I have a dedicated coil tester, but you have to take it off the car; this way is much easier!
Awesome video as usual!
Thanks Gary. SD is the master!
The scope sees it all, great video. 👍
Thanks my man!
Hi Rob. Will look into carbon tracking more.great video
Liking your channel. Keep them coming
Awesome Adam, thanks for the support!
Great video and explanation! Thank you sharing!
Thank you Angel!
Great vid again Rome.....and yes i think your a great teacher....
Those diagnosis are spot on man
I appreciate that Raj, thank you!
Good video .. but u went straight to the problem cylinder ..
I have a miss on possibly one cylinder out of 6 .. no codes to tell me which one..
It is an off idle miss just as u accelerate .. no miss at idle .. no miss at cruise . No miss under power
The secondary ignition waveforms led me to the misfiring cylinder. Are you able to see any secondary waveforms at idle and under brake torque? Although it doesn't misfire the same, you might see an abnormality in one of the cylinders which can help you narrow it down
Cool video. What exactly are you doing for the brake torque and is it the same for a auto/manual car?
Thanks Padraig, the brake torque in auto is just foot on the brake in drive, and load the engine with the accelerator
@@romanosautomotive Oh i see very good. And how do I do this on a manual car?
Good job and a great video, well done sir.
Thank you kindly Richard!
Great video. Interesting how high the KV was prior to getting the new plugs and then how low it was afterwards.
Thanks Dan, much appreciated!
Good video 👍
How you say spark plug wire down under?
Ignition lead 😁
Do you this would show up in a primary waveform?
great videos BTW!!!
Absolutely Trevor. If this was on a system where you could access the primary waveform, it would looks the same. There is no possible fault in the secondary that won't be replicated in the primary and vice versa.
So check spark plugs .
it being a subi 99% chance headgasket issues
Haha could be the case in future!
Good video 👍