Trying to perform a leak down test?

2001 FORD ESCAPE
325,000 MILES • 4.3L • 4WD • AUTOMATIC
Avatar
MIDNIGHTMOON
  • MEMBER
  • 5 POSTS
need help , Im trying to perform a leak down test on a 2001 ford escape xlt 3.0 v6 4x4 but i cant find an adapter to fit down into the spark plug hole. I have the long reach hose but it seems it needs a long reach adapter as well do you know which one works ? . Im attaching photos of rhe leak down test kit with the grey metal adapter which looks long enough but its Not a 14mmx 1.25 like the brass adapter shown in the photo . What adapter length brand will work ? The hoses wont fit into the tapered oil tube where the spark plug is due to the length issue and taper of the oil tube there .
Images (Click to enlarge)
Attached Media
Attached Media
May 27, 2026 at 1:43 AM
Advertisement
Avatar
STRAILER
  • CAR REPAIR CONTRIBUTOR
  • 54,249 POSTS
Yep, they gotcha on that one, none of the adapters will work for your application.

Brands/types to look for

I would search for:

OTC 14 mm long reach compression/leakdown adapter hose
Lisle 14 mm long reach compression tester adapter hose
Lang Tools 14 mm x 1.25 long reach adapter hose
Mityvac 14 mm long reach compression tester hose

The important part is less the brand and more the description: 14 mm x 1.25, long reach, slim hose adapter. Let me know if you need anything else.
May 27, 2026 at 3:58 PM
Advertisement
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.