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Chevy: rebuilt..I adjust the valves They are to tight and there

Customer Question
I just rebuilt my Chevy...
I just rebuilt my Chevy 1997 3.1 engine How do I adjust the valves They are to tight and there is mo combustion?
Submitted: 7 years ago.Category: Chevy
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Answered in 54 minutes by:
5/17/2010
Chevy Mechanic: Tim's Auto Repair, mechanic replied 7 years ago
Tim's Auto Repair
Category: Chevy
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hi

the rockers just bolt down ..these have hydraulic lifters..they do not adjust...make sure you have the the push rods right

Specifications

The manufacturer indicates that this vehicle has hydraulic lifters or adjusters and therefore does not require adjustment.

thanks

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Engine - Rocker Arm Bolt Tightening Specification Update

File In Section: 06 - Engine/propulsion System

Bulletin No.: 02-06-01-034

Date: October, 2002

SERVICE MANUAL UPDATE

Subject:
Revised Rocker Arm Bolt Fastener Tightening Specification

 

Models:
1996-1998 Buick Skylark
1996-2002 Buick Regal
1997-2002 Buick Century
1996 Chevrolet Beretta, Corsica, Lumina APV
1996-2001 Chevrolet Lumina
1996-2002 Chevrolet Monte Carlo
1997 Chevrolet Venture
1997-2003 Chevrolet Malibu
2000-2002 Chevrolet Impala
1996-1997 Oldsmobile Cutlass Supreme, Silhouette
1996-1998 Oldsmobile Achieve
1998-1999 Oldsmobile Cutlass, Intrigue
1999-2002 Oldsmobile Alero
1996-1997 Pontiac Trans Sport
1996-2003 Pontiac Grand Am, Grand Prix
with 3.1L or 3.4L Engine (VINs M, J, E - RPOs L82, LG8, LA1)

 

This bulletin is being issued to revise the rocker arm bolt fastener tightening specification found in several procedures in the Engine Mechanical - 3.1L sub-section and the Engine Mechanical - 3.4L sub-section of the Service Manual. Please replace the current information in the Service Manual with the following information.

The following information has been updated within SI. If you are using a paper version of this Service Manual, please make a reference to this bulletin on the affected page.

The correct torque for the rocker arm bolt is 14 N.m (124 lb in) plus 30 degrees. This specification can be found in Fastener Tightening Specifications, Valve Rocker Arm and Push Rod Replacement and Lower Intake Manifold Replacement (for 1996 Chevrolet Beretta/Corsica, 1996-1997 Buick Skylark, Pontiac Grand Am, Oldsmobile Achieva and 1997 Chevrolet Malibu ONLY).

 

Service and Repair

VALVE ROCKER ARM AND PUSH ROD REPLACEMENT

Removal Procedure



 

  1. Disconnect the negative battery cable.
  2. Remove the valve rocker covers.
  3. Remove the rocker arm bolts.
  4. Remove the rocker arm pivot balls.
  5. Remove the rocker arms. Important: Keep the pushrods in order in order to install the pushrods in the original position.
  6. Remove the pushrods.

Installation Procedure

  • Tools Required
  • J 36660-A Torque Angle Meter

 



 

  1. Install the pushrods in the original location.
    • Coat the ends of the pushrods with GM P/N(NNN) NNN-NNNNor the equivalent.
    • The intake pushrods are identified with yellow stripes and are 5-3/4 inches long.
    • Exhaust pushrods are identified with green stripes and are 6 inches long.
    • Ensure that the pushrods seat in the lifter.
  1. Install the rocker arms.
  2. Install the rocker arm pivot balls. Coat the bearing surfaces of the rocker arms and the pivot balls with GM P/N(NNN) NNN-NNNNor the equivalent. Precautions.
  3. Install the rocker arm bolts. See TSB 02-06-01-034
    • Tighten the bolts to 14 Nm (124 inch lbs.). Use the J 36660-A in order to tighten the bolts an additional 30 degrees.
  1. Install the valve rocker covers.
  2. Connect the negative battery cable.
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