The Ford Barn

Marv 49 · 11-14-2021, 10:49 AM

So after finally concurring carburetor issues, I moved onto general maintenance and some base line readings for reference in the future. First on the list was a compression test which was taken after about a 10 mile drive.

Cylinder/Dry/Wet. Cylinder/Dry/Wet
5/110/110. 1/75/75
6/110/115. 2/85/90
7/105/115. 3/90/95
8/105/120. 4/105/110

I added 2 squirts of MMO to each cylinder for the wet test before having one of the kids crank it over 5 compression strokes. Cylinders 1/2/3 were a suprise for me since the car runs good and really doesn’t smoke out the exhaust. From what I have read those low numbers could be valve related since the numbers didn’t come up with the wet test. There is some valve train chatter that I’m assuming is related. Other than a leak down test, is there anything else I should try? I did add MMO to the oil before I ran the car and gonna try and drive it a bit more before bad weather to try and hopefully loosen up things. Thanks again guys for all you knowledge.

11-14-2021, 10:49 AM	#1
Marv 49 Junior Member Join Date: Oct 2020 Location: Southern Illinois....NOT Chicago! Posts: 26	Compression results So after finally concurring carburetor issues, I moved onto general maintenance and some base line readings for reference in the future. First on the list was a compression test which was taken after about a 10 mile drive. Cylinder/Dry/Wet. Cylinder/Dry/Wet 5/110/110. 1/75/75 6/110/115. 2/85/90 7/105/115. 3/90/95 8/105/120. 4/105/110 I added 2 squirts of MMO to each cylinder for the wet test before having one of the kids crank it over 5 compression strokes. Cylinders 1/2/3 were a suprise for me since the car runs good and really doesn’t smoke out the exhaust. From what I have read those low numbers could be valve related since the numbers didn’t come up with the wet test. There is some valve train chatter that I’m assuming is related. Other than a leak down test, is there anything else I should try? I did add MMO to the oil before I ran the car and gonna try and drive it a bit more before bad weather to try and hopefully loosen up things. Thanks again guys for all you knowledge.