How to Find Compression Leak

This is a short hand-held phone video on how to perform a cylinder 'leak test' on an engine that is misfiring. Should you suspect you have a cylinder valve that is leaking and not sealing or seating properly, this is a good basic video tutorial for you. To do this test, you will need an air compressor with a low-pressure regulated air supply, a common professional cylinder compression gauge tester which has a typical quick-disconnect, a Schrader valve removal/install tool and common hand tools used for tune-ups. I've recently ordered up a head-mounted camera for better future videos from this POV standpoint, but this is very useful as-is. I have also started shooting a new and rather involved video on 'general' cylinder head removal/reinstall on a typical V8 engine for future reference. In this case, a 1999 Dodge 1500 Pickup - same specimen from here. I hope this helps some folks understand about basic cylinder leakage and how to determine where that leak may be coming from. r-

[@reluctorvalve]

Oct. 2016, All: My HUGE thanks for all of your having discovered my videos and found them to be useful, and a HUGE thanks for those who have had continued to share tech info on Google +. I have good news: the health issues are finally over, and all is good! If you view my video on cylinder head replacement (Dodge Truck), you can see a mole on my right elbow. That turned out to be malignant melanoma - the deadliest form of skin cancer there is. It was actually during shooting that Dodge truck video that the mole became angry, sore and bleeding while bumping it around. It has been a surreal experience, for sure. If you've worked out in the sun, please go get a dermatology check! Directly following that, I went through a divorce, home sale, then purchasing my new home WITH a SHOP!!!! I'm very excited, and can't wait to get caught up and to continue. Thank you all for your patience, and I sorely apologize for my absence. It will take me a while to get back into the grove here, but I'll dig in more as I am able to. Keep those wrenches turning, and the questions coming! Oh!!!...I have SOOO much to catch up on! r-

[@geojor]

hope you make lots of videos, they're very good...

[@reluctorvalve]

+pei bossman I think I will perhaps shoot an upcoming timing belt job.... r-

[@lgarla23]

You're very helpful and clearly an intelligent mechanic however it would better if you showed everything you're talking about on video.

[@reluctorvalve]

+lgarla23 I think your response regarding this video is fair - this isn't at all like my other videos. I shot this just prior to my getting a wearable POV camera, and also, the assumption with this video is that the viewer already have some fairly good knowledge regarding internal engine operations. This is pretty opposite to most of my other videos, where the primary focus is for those who don't have a great grasp on the content, but perhaps have the aptitude. So, regarding this video, I agree with you from that perspective. Those other videos are pretty highly detailed, and lengthy. I just shot this unplanned, just prior to doing a complete teardown of that set of heads on truck. Thanks for the nice compliment! r-