| US 7,367,220 B2 | ||
| Engine oil leak test method with EGR valve leak offset | ||
| Heather W. Thomas, Bellefontaine, Ohio (US); Chuck Hoke, Piqua, Ohio (US); and Brent C. Rankin, Lima, Ohio (US) | ||
| Assigned to Honda Motor Co., Ltd., Tokyo (Japan) | ||
| Filed on Jan. 05, 2006, as Appl. No. 11/325,714. | ||
| Prior Publication US 2007/0151329 A1, Jul. 05, 2007 | ||
| Int. Cl. G01M 3/26 (2006.01); G01M 15/00 (2006.01) | ||
| U.S. Cl. 73—47 [73/49.7; 73/118.1] | 11 Claims |
| 1. A method for pressure testing an engine for leaking oil seals, comprising the steps of:
connecting the engine to a source of pressurized air, including the step of sealingly connecting pressure connections to engine
pressurizing ports, said engine pressurizing ports including exhaust manifolds, air intake passageways, an oil fill tube,
and a head cover port;
charging the engine with pressurized air so as to place an oil system of the engine at a predetermined pressure;
after the oil system is at the predetermined pressure, monitoring the pressure in the engine oil system for a predetermined
period of time to detect a drop in pressure; and,
using the detected pressure drop to determine whether the engine is leaking air at a rate that is indicative of a leak in
one or more oil seals.
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