How To Perform A Leak Down Test - Fast & Easy
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- čas přidán 13. 09. 2022
- Steps on how to do an engine leakdown test:
Step 1 : Remove the spark plugs and rotate the engine to put the cylinder to be tested at TDC. Tip: Insert a long screwdriver or extension into the spark plug hole and turn the engine by hand with a socket on the crankshaft. When the screwdriver stops rising or falling, you’re at TDC. Don’t turn the engine backward if TDC is missed. Go around again. In a four-cylinder engine, cylinders one and four and two and three are at TDC at the same time.
Step 2 : Figure out which spark plug adapter works best and connect the gauge into the hole. Put the vehicle in gear and set the parking brake to prevent the engine from turning when air is compressed into the cylinder. Start with the regulator turned counterclockwise to zero the incoming pressure. Connect compressed air. Turn the regulator clockwise to pressurize air into the cylinder.
Step 3 : Record leakage percentage for the cylinder. Remove the oil dipstick, radiator cap and oil filler cap. Open the throttle body or remove the air cleaner. Listen and watch. Wherever air is escaping will indicate where the problem is. Disconnect the gauge and move to the next cylinder.
Follow along as I teach you how to do engine leak down testing, whether you are an automotive technician or a DIY-er looking for tips us pros use.
Grab your tools, lets get ready, lets hit it!
#enginecompressiontesting #compressiontest
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![How To Perform a Compression Test - [EASY]](http://i.ytimg.com/vi/3VmmL0YAO14/mqdefault.jpg)
I believe this was an outstanding presentation and this guy knew his business. He’s professional.
Thank you, glad you enjoyed it!
Super informative, straight to the point and very clear information. This is the kind of video you're hoping to find whenever looking for mechanical guidance on CZcams
I’m not an actual technician, but you have bettered me through your vids. So clear and simple. Oscar, you are very articulate👍🏼 Keep sending great videos👏🏽
shoot!!! The 4 examples, or options you gave at the end to help you diagnose the problem, were pure gold 🙏
I did not understand the glove and exhaust tho
I just stumbled on this video today. Because of the excellent presentation here I checked out several of Oscar Gomez's other vids. Oscar is far and away the most articulate auto tech guys I've seen yet. Excellent production from script to the camera work! Glad I found ya.
Best video on this topic I've seen so far. Great job! I'm a DIY mechanic and don't necessarily need to buy the SnapOn leak down tester featured in your video, but I want to do it anyway. The reason is that buying the tester and performing the test is probably still cheaper than scheduling an appointment for a certified mechanic to do the same work. The bonus is that I'll always have the tester, and will have learned a new skill. This video definitely gets a thumbs up.
You were very good at this presentation, loved it!
Excellent right to the point, no bull. This guy is a master
I'm loving these vids. I'm not training but I do all the work on my cars so great to learn. Thanks
Thanks for coaching us ! You are an amazingly talented and dedicated friend of the automotive repair community !!
I am about to graduate from a mechanics’ college in London UK but watching both yourASE A6 and A8 clips make me feel despondent. I feel like I haven’t learned much in my three years in college. Keep it up bro, you know your stuff!
Excellent video! Oscar gets right to the point with why, how to and where or what's the problem is. Very professional
Very good. You should also do a video "How to do a how to do video". Very professional!
Thank you, I'll let our protection team know your positive feedback.
Air loss in the crank case can be rings or a hole in the past.
Put a spoon full of oil in the cylinder and recheck
If the air loss improves its the rings.
If not its a hole in the piston
If I have a loss in the valves I loosen the rocker arms when possible to make sure the valve is closed if you still have air loss
It's a bent or burnt valve
Might be head gasket to.
I’m very impressed with your videos man. Good teaching skills.
I love your videos Oscar, straight to the point, and easy to understand!
Great video - short and simple with practical advice!
It’s been a very helpful description on how to perform a leak down test, thanks a lot.
Great video. Working to diagnose a misfire my CT200h. Just waiting on my tester. Being a Prius engine it's probably the head gasket 😮💨.
Could be, always test to make sure. You got this.
That whistle test is causing confusion. Yes it tells you that you are in the compression stroke, but NOT actual TDC. I ALWAYS use something through the spark plug hole to verify that I am not on either side of actual TDC. Hope this helps.
TDC indicator is also a good tool.
Thanks for the explanation. Didn’t understand that
Turn the engine at crankshaft until the pressure start build up on right gauge, also You start feeling the force on spanner with long arm preferred.
Yes^^^^^^thank you!!
I found putting a balloon on the end of the hose and watch it completely expand before deflation helps alot
Thank you for this video. It is really helpful. I learned something really important and definitely getting me these tools. So I can give my customers an accurate answer when they ask me about. Thank you.
Thank you very clear instructions and expert tips you can only learn from someone whom is a true master mechanic Thanks again!
Wow, thanks for the kind words and for watching.
GREAT JOB explaining how the tool works and how to properly run the test.
Thank you!
Good information about the glove on the tailpipe. And also pulling a intake hose to hear the leak.
The diagnostic tips are super helpful
Thanks a million
Thank you for mentioning the shrader valve. I overlooked that
Very very well explained. Great job Oscar!
been doing this on and off for 10 years ..... I have never used this tool and I almost never use a compression gauge ... AND today that lack or tool usage has bit me in the butt... and that's a defeating feeling
Super-pro video, great concise complete information, nicely staged and filmed, thank you!!
Beautiful test sir. I have learned something new I never knew about. Keep it up.
This is super helpful. Gonna try and do a leakdown soon on my 93 yoda
Awesome... thank you very much, Oscar. This was very informative.... going to buy a tester now.
Very Helpful and easy to understand
Studying for A1. This was very helpful. Thanks Oscar!
Awesome video brother. Thanks for the thorough explanation.
Any time! Thanks for watching!
Great video..clear and precise definitions and instructions.
Keep up the good work guys the video was pretty much understandable
Great video. Very informative 👍
This what I called step by step. Thanks for making this video.
Glad it helped! 😁
Excellent video. Clear explanation.
Very good training love it I learned a lot thank u
Great video - thanks for sharing this info.
good simple explanation. I'm a cheap man. I know snap tools are very good tools and expensive. so Im going to lease one from an autoparts store. when Im done just return it and they return my money
I loved the info provided Thank you very much for sharing
Love the video and Information.
Trying really hard to learn. I do a lot of repairs by my electrical trade and found fascinating all the systems that work together on a car .
Well done! Great instruction!
Thank you so much!
You’re a great teacher
Great video explaining the leak down test. I appreciate it.
Thanks for watching!
Excellent video! Very informative.
Thank you ! Really helpful
Simple and to the point! Great vidio!
Your video was very informative. You explained it flawlessly!!
Thanks for the explanation
excellent video! very informative.
Great very informative video. Thank you for sharing that knowledge
Excellent! Thank you very much!
Great lesson .
Love the content, as someone who's currently studying to become a tech I'm grateful to have someone like you who's clarified and helped me understand properly many things. Keep it up, God bless 🙏!
Video was helpful, thanks for sharing
Good video very well explained teacher
Great explainations!
Great explanation, keep it going. God bless
Great job- thank you!
Really good video and awesome information.
"Where the hell is it going?!" Love it! Thanks!
Excellent well explained video!
Very well explained, thank you,
"Excellent video thank you Mr. Master.
Great video!!!! Thanks for the knowledge!!!
You're welcome anytime!
Awesome video. Very detailed and good pacing
Thank you kindly!
Best explanations, thank you Oscar
You’re welcome, thank you for watching.
Great presentation
Thank you for your support! 😁
Wow quality education right here 👏
Grate video , thank you very much
Perfect explanation! Well done!
Glad you liked it!
Great video - thank you!
Glad you liked it!
Thanks, definitely helpful..
Great Video!
Great advice
great video. tremendo video gracias hermano.
Great video
Very good insight.
Thank you for watching.
Good job
Thank you for watching.
Very Good information, Thanks 👍
Glad it was helpful!
love this, Thanks
Oscar , great job describing this procedure for this dummy.. although I’ve discovered I need some engine work or a new truck
This was a very informative and well done video and very educational, Great Job😁
Glad you enjoyed it!
really good job
Great detail explanation. New subscriber. Thanks
Thanks for the sub! I'm glad you liked it.
Nice bro respect. Good knowledge 👌 your smart brosky
Very good explanation Sir thank you good bless
Excellent explaination
Thank you, glad you liked it.
thanks, learned a lot
Nicely explained 👍
Thank you 🙂
Solid instruction
Nice job
Great info
Love this video!!
Good stuff!
Great information
Glad you liked it.