Differential Cylinder Pressure Tester Model E2M-1000

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Part# 12-00692
MFR Model# E2M-1000


The Differential Cylinder Pressure Testers quickly locate worn and cracked rings, defective intake and exhaust valves, scored and cracked cylinders, leaky head gaskets, and worn and stripped spark plug bushings; virtually every potential cause of pressure loss.

Model E2M-1000 Tester, for cylinders with a 5.00 inch bore and over a .060 inch diameter orifice, that eliminates all guess-work by enabling you to determine the exact location and cause of your engine's efficiency loss.

Model E2M-1000 includes:
  • Slow Fill Valve™
  • Safely find TDC
  • Safely bleed cylinder test pressure to
    zero for testing multiple cylinders
  • No repeated pressure adjustments
Master Orifice Valve™ Built in Master Orifice, for fast and easy Master Orifice Test
California Prop 65 Warning Symbol

WARNING: Cancer and Reproductive Harm -


  • Heavy Duty Regulator
  • Heavy Duty Gauges
  • All Connections Quick-Disconnect
  • 18 mm Plug Adapter
  • Extra Long High Pressure Hose
  • Complete instructions with each unit


Can I buy just the gauges so I get current Calibration Certificate ???

John H
October 27, 2022

Mine completely came apart. Springs and washers went everywhere. It’s at least a few years old but I’ve alway kept it in a padded case purchased separately. I’ve tried to call the company a few times for repair advice but couldn’t anyone to answer my calls.

James M
December 28, 2020


Please note, Aircraft Spruce's personnel are not certified aircraft mechanics and can only provide general support and ideas, which should not be relied upon or implemented in lieu of consulting an A&P or other qualified technician. Aircraft Spruce assumes no responsibility or liability for any issue or problem which may arise from any repair, modification or other work done from this knowledge base. Any product eligibility information provided here is based on general application guides and we recommend always referring to your specific aircraft parts manual, the parts manufacturer or consulting with a qualified mechanic.

Q: Does this compression tester model E2M-1000 come with a current calibration certificate?

The calibration information is on a sticker on the unit. It has a one year calibration time once manufactured at the factory. Shipping and time on the shelf will shorten the one year date once it is received by the end user.

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