BB 454 Rebuild
Le Mans Master
Joined: Jun 2004
Posts: 6,231
Likes: 65
From: Seattle WA
St. Jude Donor '14
The engine needs to be warm, and the required input PSI (different for each gauge to some extent) needs to be met for the results to be meaningful - I'd be surprised if 15 PSI was enough, but being cold and dry was probably the reason it wouldn't hold pressure.
Here's a great Car Craft article on leak-down testing:
http://www.carcraft.com/techarticles...r/viewall.html
A cranking compression test is just another piece of the puzzle so I would do that as well as noted previously. I know this stuff takes time, but it's time well-spent and skills worth acquiring.
Here's a great Car Craft article on leak-down testing:
http://www.carcraft.com/techarticles...r/viewall.html
A cranking compression test is just another piece of the puzzle so I would do that as well as noted previously. I know this stuff takes time, but it's time well-spent and skills worth acquiring.
