PTS Online Automotive Training Webinars

PTS Online Automotive Training Webinars


hello and welcome to our preview of the pts online webinar program my name is Chuck maha’s Nick and I am the host and moderator of the pts online webinar training join me for a quick look at the pts online website in a sample of what you can expect during a typical session you can access the pts online webinar program from w w standard Brown comm in the top navigation bar drag your cursor over the technicians tab or the training tab and then cursor down to and click on the webinar training pts link if you have not yet registered you can create a free user account by clicking on the not a member register here link and follow the instructions to create your free account if you are already registered enter the email you used during the registration process and your password and then click login this will take you to your pts online personal home page the control panel on the left side is where you can access all the features of the site upcoming training is listed on the right right now please take the next few minutes to view some highlights of our past pts online webinars I will be back with some additional information afterwards you and what he did was he today took his scope and connected it to a pressure transducer which he attached to a hose and the type that you used for your compression gauge set and he took the number one spark plug out and screwed the hose right in the cylinder and then he took that spark plug wire off from number one and connected it to a spark tester so he could simulate a spark plug what this allowed him to do was to take a sink probe and connect it around the plug wire so now his scope is synchronized to the ignition set system and the screen is going to allow him to look at the actual compression pressures that are occurring in the Psalter each time that piston goes to top dead center it’s going to create pressure each time it goes down at the bottom you’re gonna see the pressure drop off it’s going to go through all four strokes and then it’s going to repeat the compression stroke again so let’s zoom in on the waveform that this fellow acquired the first thing I like to point out is that what you’re seeing here with this yellow peak and I’m gonna draw an arrow going up that’s the piston going up on top dead center then once the piston gets the top dead center it travels back down and what we see is the pressure and the cylinder depressurizing because the piston is going down and then at the bottom of that we see the valve open exhaust valve right here in the middle but there’s there’s all you know even though there’s there’s a an event happening we don’t see it because the exhaust valves open so at this point the piston is going back up a top dead center on exhaust so the piston pushes the gases out of the solder and then it comes back down on intake and finally goes back up on compression right here all right it’s time for questions Chuck well you got the first case study with the VW uh-huh we had a question here wouldn’t this scenario cause problem with compression cause it to be out of light time also the original technician put a timing belt on based upon his compression gauge readings so it definitely had low compression and when we look at our waveform we see that the peak compression for this engine at cranking was only 60 psi well now the technician runs the agent at 2500 rpm and lets it warm up and when he gets through warming the engine up which occur and lets it go back to idle which occurs right about here the engine now idles very rough the other thing that he notices is his short term fuel trim on bank one is adding about 13% and bank two is now subtracting near 14% a 50% duty cycle puts the the solenoid in a position that blocks oil to both cavities so this is how they lock the cam in place once the proper position has been achieved the 35% value is the cam starting to move back toward the advanced position you can see we have oil going into the advanced cavity and coming out of the retard cavity gonna have to figure out we’re all a little it’s pieces when it and replace all the hiding places or clean them you know one of the things that I find particularly pesky is a muffler type hoses that where you have areas in there that you really aren’t going to be able to flush or if you want to flush York you’re gonna have to take them out you got also it you also have issues you got to consider with dual AC systems you know and then with a 50-foot long aluminum tube that runs all over the vehicle to get to the back you know many of those the only way you could really flush those is to get the evaporator you know basically uncovered take the expansion device out pull back through that tube down back towards the front of the vehicle to clean it so I mean you got to remember that that whatever went in there it’s got to come back out and all right time for questions Chuck right Michael has a question along the lines of when servicing the hybrid a/c does it cost more or is it about the same two services the oil is very expensive it’s like I think sixty something dollars for a little-bitty can that does one one one job on one car yeah the refrigerant capacity to the system I think is down there like fourteen or sixteen ounces so you know the refrigerant costs obviously be cheap but the but the oil won’t be so if you’re pure in there for a replacement I would say you know that’s when the oils gonna come into play all right Chuck what’s next Greggy asks what refrigerants used in the hybrids is it 134 yes sir 134 Dan 134 would pol that’s it for me on a refrigerant under charges causes the oil to stay in and it looks like we got a clear winner all right let’s share that hole and 81 percent you guys either knew about it and we listed it I appreciate that I wanted to make sure I made that point very clearly because that is one of the biggest problems we see with compressor failure what you’ve been watching is just a small sample of the more than four hours of archive pts online webinars you purchase a live webinar you also have access to the archived recordings of the webinar which will be available in my playlist after the live session for you to review at any time our current pts online webinar program offers a new webinar every month through 2011 webinar titles dates times and descriptions are viewable on your live training page pricing details are available on a pricing program page a certificate of completion is another feature of the pts online webinar program and will be available under my certificates at the conclusion of a topic for which you are registered from there you can download or print your certificate for pts online webinars I’m Chuck maja snick thank you for watching and I look forward to seeing you at our next pts online webinar


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