Come along with Eric O. at the SMA garage as we have a closer look at the in cylinder cranking pressure waveforms we gathered with our Pico Scope (files below). One of the best parts about YouTube is the interaction with a you the viewers. A viewer named Steve Stacey inspired me to take a closer look at my cranking waveform on the #5 cylinder and see if we could pick it apart a little more.
Honda Slight Miss Part I : https://youtu.be/Y4wF_Nn2EqU
-Misfire Strategies for Today’s Vehicles with Dave DeCourcey: https://www.youtube.com/watch?v=D0LXtvY3Qdg
– Launch x-431 Pad II AE: https://www.aeswave.com/cart.php?m=affiliate_go&affiliateID=2525b91fc8e906e8215984074c9d9e8f&go=https://www.aeswave.com/Launch-x-431-Pad-II-AE-301180411-p9586.html
– AES uTest Advanced Terminal Test Kit: https://www.aeswave.com/cart.php?m=affiliate_go&affiliateID=2525b91fc8e906e8215984074c9d9e8f&go=https://www.aeswave.com/uTest-Advanced-Terminal-Test-Kit-p9573.html
– 4-Channel PICO 4425 Advanced Kit in case and foam: https://www.aeswave.com/cart.php?m=affiliate_go&affiliateID=2525b91fc8e906e8215984074c9d9e8f&go=https://www.aeswave.com/4-Channel-4425-Advanced-Kit-in-case-and-foam-p9525.html
– FREE PICO 4425 Software: https://www.picoauto.com/downloads
– MY FILES ON THIS CAR (Must Download Pico Software First!!): https://drive.google.com/open?id=0B6GLn2hFUMz9VktqdTJkUnJwT1k
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THANKS A MILLION!!
–Eric O.
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Thank you all for the birthday wishes! It feels great to be 25!!
Well 25ish…
Eric nice job of showing in a experiment how the leaking exhaust valve works with wave form. Nice job for us that are not mechanics
so what did you find when you tore it down ? leaking valves? head gasket?
If it is losing pressure out the intake valve you will see it with a vacuum gauge on the intake manifold. In the old days the shaky needle was a pretty good indicator of leaky valves.
Thank you for continuing this diagnosis, it is very interesting and informative.
can not describe the events any better. thanks
These in depth technical videos are superb. Thank you.
Excellent demo's!!
OMG you like to hear yourself talk. This is 3rd Grade stuff. Stick to the subject of the video. You really sound like you’re on drugs or something. Nobody should talk so repeatedly over and over again. Get help.
I loved the picture of Scotty on the marker board man. The patron saint of hobby wrenching and mechanical advice provides a watchful eye over the shop.
Have been watching you show those cylinder pressure wave forms for a while now. Never fully understood what they meant. After your demonstration with the syringe, I fully understand what the dip in the wave form is. Thank you. I'm just an old retired electrician that is still learning. Stan
Thanks 😊.
Eric, I know its been four years but your files don't seem to be available anymore. Anyway I could get those (just for grins>) Also, can't seem to get to your Amazon store either.
Leaking air/fuel mix on upstroke thru exhaust valve is going to wear out the cat(s) sooner.
It will be nice to take the engine apart to check the theory.
he is a great teacher!
Your explanation and your visuals were amazing. Love the way you made technical look easy.
What did the problem end up being? Experiencing the same issue on an 03 accord. Runs great when it drives, not idling though.
Hey Eric, ijust wanted to say thank you for taking the time to make all these videos,but specially for making all the learning process so much fun because it is great to find people like you in this world,thankyou very much and god bless you and your family
Very nice illustration. Thanks
If you want the whiteboard perfectly white again, try WD40.
It’s great to see you give back to the industry. Great instructor.
I guess the small vacuum or the small dip shown on the waveform on other cylinder is due to the blow you or leaks from the rings.
If some of the air has escaped on the up stroke through a leaky exhaust valve, wouldn't it suck more air in during the down stroke through the same leaky exhaust valve?
Scotty Kilmer on the board. I enjoy your diagnostic videos. I think it's because in EMS, we use the same thought process on patients. There is a problem, find signs and symptoms, test and diagnose, form a plan, and treatment. You use your knowledge and experience to form your treatment plan. You never stop learning and use every opportunity to grow. Analysis of cardiac wave forms or in- cylinder compression tests are much the same. Don't stop posting these case studies. You are pushing out valuable knowledge to those that have yet to see complicated problems. Great job Dr. Runsgood.