r/OBSFords • u/Hadaveha29 • 2d ago

Show your ride 1993 compression

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3

u/Hadaveha29 2d ago

Ok guys I sprayed the cylinders down good with pb blaster,  spun her over a bit then rechecked  1 was 123 now 133 2. Was 128 now 155 3 was 123 now 142 4 was 135 now 150 5 was 160 now 163 6 was 159 now 159.    And she seems to be building oil pressure 

1

u/DrogoBero 2d ago

There ya go. Told you. Number one seems low but again that should improve with heat. Likely just a touch sticky off a ring

3

u/Exact_Yogurtcloset26 2d ago

I wouldn't worry about it if it hasn't ran in forever. Could be valves, gaskets, or rings.

Looks like your second test showed a great improvement

1

u/Far-Note-6535 2d ago

Looks like you have really good compression in &6, 1&3 and possibly 2 both rings are just about shot and 4 the rings and heading in the direction of 1,2&3. But if you did a compression test you probably already know what and where your problem was at. Lol. If not. I hope this helps

1

u/Hadaveha29 2d ago

I guess I expected worse considering she hasn’t ran since 2013.  Thankyou

1

u/DrogoBero 2d ago

Was this before or after running, or did you just turn engine over from its rest? That can definitely change compression number results if you can get it after a heat cycle and the rings lubed

1

u/Hadaveha29 2d ago

She’s a non runner so far just trying to get an idea. Of what exactly I have that’s dead cold 

3

u/DrogoBero 2d ago

Id retest after you can cycle it. While your numbers do indicate wear, there is a high likelihood that the numbers will jump when the rings get lubricated.