Standard Procedure - Jeep Wrangler Sport 2010 Manual

2010 Jeep Wrangler Sport
2010 ENGINE 3.8L - Service Information - Wrangler
Remove the spark plugs.
Remove the oil filler cap.
Remove the air cleaner.
Calibrate the tester according to the manufacturer's instructions. The shop air source for testing should maintain
483 kPa (70 psi) minimum, 1,379 kPa (200 psi) maximum, with 552 kPa (80 psi) recommended.
Perform the test procedures on each cylinder according to the tester manufacturer's instructions. While testing,
listen for pressurized air escaping through the throttle body, tailpipe and oil filler cap opening. Check for
bubbles in the coolant.
All gauge pressure indications should be equal, with no more than 25% leakage per cylinder.
FOR EXAMPLE: At 552 kPa (80 psi) input pressure, a minimum of 414 kPa (60 psi) should be maintained in
the cylinder.

STANDARD PROCEDURE

ENGINE GASKET SURFACE PREPARATION
Fig. 2: PROPER TOOL USAGE FOR SURFACE PREPARATION
Courtesy of CHRYSLER LLC
To ensure engine gasket sealing, proper surface preparation must be performed, especially with the use of
aluminum engine components and multi-layer steel cylinder head gaskets.
Never use the following to clean gasket surfaces:
Metal scraper (1).
viernes, 1 de octubre de 2021 05:18:29 p. m. Page 9 © 2011 Mitchell Repair Information Company, LLC.