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Old 03-26-2018, 08:33 PM   #1
Vic in E-TN
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Question Cylinder Leak Down Tester

Does anyone have a picture of or a diagram for a leak down tester? Hard to find one using the search function.
Thanks.
Vic
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Old 03-26-2018, 08:51 PM   #2
iverson
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Default Re: Cylinder Leak Down Tester

Here Vic
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Old 03-26-2018, 08:59 PM   #3
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Default Re: Cylinder Leak Down Tester

Try again
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Old 03-26-2018, 10:03 PM   #4
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Default Re: Cylinder Leak Down Tester

All aircraft mechanics have them. You can buy one from several sources.
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Old 03-26-2018, 10:49 PM   #5
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Default Re: Cylinder Leak Down Tester

Have you tried JEGS, Summit, Amazon? Local auto parts stores or best of all check with your friends or club members you can borrow one and get educated on it's use.
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Old 03-27-2018, 12:45 AM   #6
Bob Johnson
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Default Re: Cylinder Leak Down Tester

Here is my homemade one.

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Old 03-27-2018, 08:46 AM   #7
katy
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Default Re: Cylinder Leak Down Tester

Quote:
Originally Posted by Vic in E-TN View Post
Does anyone have a picture of or a diagram for a leak down tester? Hard to find one using the search function.
Thanks.
Vic
This article has a diagram: https://en.wikipedia.org/wiki/Leak-down_tester
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Old 03-27-2018, 05:15 PM   #8
Steve Wastler
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Default Re: Cylinder Leak Down Tester

Harbor freight 32 bucks with coupon
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Old 03-27-2018, 07:12 PM   #9
Phil Brown
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Default Re: Cylinder Leak Down Tester

Made this one years ago works great. Just leave the gauge as is and read it backwards...so
100 PSI = 0% leakdown
90 PSI = 10 % leakdown
80 PSI = 20% leakdown
and so on
Attached Images
File Type: jpg leakdown #1.jpg (60.4 KB, 55 views)
File Type: jpg leakdown #2.jpg (49.2 KB, 62 views)
File Type: jpg leakdown #3.jpg (56.3 KB, 41 views)

Last edited by Phil Brown; 03-27-2018 at 07:28 PM.
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Old 03-27-2018, 09:54 PM   #10
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Default Re: Cylinder Leak Down Tester

Quote:
Originally Posted by Steve Wastler View Post
Harbor freight 32 bucks with coupon
That is what I did. Does the job.
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Old 03-28-2018, 09:54 AM   #11
Scottio57
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Default Re: Cylinder Leak Down Tester

K&L, Snap-on, Matco.
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Old 03-28-2018, 03:33 PM   #12
Kurt in NJ
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Default Re: Cylinder Leak Down Tester

Factory leak down tester came with the car--- the hand crank.
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Old 03-29-2018, 12:00 PM   #13
Vic in E-TN
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Default Re: Cylinder Leak Down Tester

Thanks for the replies. I think that I will just get one at H-F next time I am there. I had made up one years ago but used the old spark plug to make an engine lift thing.


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Old 03-29-2018, 09:11 PM   #14
Chuck Sea/Tac
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Default Re: Cylinder Leak Down Tester

I just went to hf and bought one. Found an old plug ground the metal around the porcelain away, piped it out drilled the inside out to 1/2” and tapped it for the 14X1.5 MM adopter in the kit. Now I’m ready to go.
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Old 03-30-2018, 12:13 PM   #15
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Default Re: Cylinder Leak Down Tester

Quote:
Originally Posted by Chuck Sea/Tac View Post
I just went to hf and bought one. Found an old plug ground the metal around the porcelain away, piped it out drilled the inside out to 1/2 and tapped it for the 14X1.5 MM adopter in the kit. Now Im ready to go.
There you go. Mine doesnt even have a gauge - old regulator that leaks slowly so hook it up and let it build pressure and see where it comes out. Generally doesnt take much time and its normal to eventually blow past the rings. Just if its immediate thats not good.
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