How to diagnose cylinder misfire on 1966 Ford Mustang. Compression test & cylinder leak down test.
HTML-код
- Опубликовано: 10 сен 2024
- Check out Alf's Mustang Parts on Amazon www.amazon.com/shops/mustangalf
Things I used in this video. As an Amazon Associate I earn from qualifying purchases
Compression tester amzn.to/3iGv3Px
Cylinder leakage tester amzn.to/3iGvfhJ
GoPro Camera & accessories amzn.to/2NwysVu
Lighting set up amzn.to/3ph54R2
Basic mechanics tool set amzn.to/3ob7q2B
Subscribe to the channel and click on the notification bell. / @alfsmustanggarage
We want your thoughts and comments below. What are some of your best engine problem stories? What kind of project are you working on? What Mustang are you daily driving?
Today at Alf's Mustang Garage, we have a 1966 Ford Mustang with multiple cylinder misfires. I show you how to diagnose this problem step by step. We take a manifold vacuum gauge reading, we then move to a compression test, followed up by a cylinder leak down test.
Alf's Mustang Garage is not responsible for any mechanical or technical error that you may encounter when working on your own car. You are responsible for your own quality control and your own proper repairs.
![How To Perform a Compression Test - [EASY]](http://i.ytimg.com/vi/3VmmL0YAO14/mqdefault.jpg)
![How To Perform a Compression Test - [EASY]](/img/tr.png)
We are here to keep your classic Mustang on the road and out of your garage. Subscribe to the channel and click on the notification bell. ruclips.net/channel/UCZi2JnDfxDHwqJoxJzFnIlA
I love the practical, no-nonsense approach of your vids. Explanations and videography is very clear. Really nice work.
I’m just starting on getting a 65 back on the road after ~25 years. Thanks for sharing your knowledge! It’s very helpful.
Oh sweet! That is awesome! Good luck on your project. I'm happy to hear these videos have been helpful.
That was a very clear explanation of how to leakdown test. Thanks!
You're very welcome
Just like what everyone else is saying, very informative and straight forward.
Thank you!
Another great video! A lot of knowledge here.
Thank you!
Rough idling but no exhaust smoke: Did comp. tests on mine. #2 cyl. showed 95 PSI and the others showed 130ish. Squirted in some oil and came up to 110 PSI. Pulled the head anyway. #2 & #6 pistons damaged from something getting into the cylinders. Set of STD pistons, rings, gasket set and valve job. We'll see.
Wow makes you wonder what got in there. She will run like a champ once you're done with her.
Bad news bears! Love it!
😂😂😂
Yup! Watch for the next video. Cylinder head is coming off, getting rebuilt and going back on.
This video is immensely valuable. Thank you!
You're very welcome!
super informative. Keep up the great work!
Thank you! We have lots more in the works.
Awesome video Bro keep them coming
Thank you!
Bad news bears is right!
Yes sir
Very informative video, thank you!
I did a compression test on my 65 289 and got the following psi numbers for each cylinder:
1 - 131
2 - 131
3- 140
4 -130
5 - 96
6 - 30
7- 15
8 - 20
So clearly I have an issue with cylinders 5-8 on the driver’s side I don’t have a leak-down tester but I will have to get one to investigate further. Any idea what could cause such low compression numbers?
I believe the car was sitting for over 10 years before I purchased it. I did manage to get it started a couple times, but it died shortly after. Any help is appreciated!
Oh wow you definitely have something going on with that left bank. Ya a leak down tester would be great to have. Hopefully you may just have cylinders washed out. You could try adding a little engine oil to each of those cylinders through the spark plug hole and then re-check the compression. See if that gets them to seal up. Otherwise you may have something else going on. Let me know how it goes.
I sprayed some oil in cylinders 5-8 and re-ran the compression test. The numbers came back much higher now!
5-131
6-150
7-140
8- 125
I was very hopeful it would start up now with the much higher compression, but it still didn’t!
Is it possible even though they are generating sufficient compression I still have a leak somewhere?