For 1990-2009 cars

# Crank, No Start Due to Low Compression after Cylinder Head Repairs - keywords engine induced job machine mechnical shop

Subject: | Crank No Start Due to Low Compression after Cylinder Head Repairs - Check for Proper Valve Rotator Installation

Models: | 1996-1998 Buick Skylark

| 1996-2002 Chevrolet Cavalier

| 1997-1999 Chevrolet Malibu

| 1996-1998 Oldsmobile Achieva

| 1999-2002 Oldsmobile Alero

| 1997-1999 Oldsmobile Cutlass

| 1996-2001 Pontiac Grand Am

| 1996-2002 Pontiac Sunfire

| with 2.4L Engine (VIN T - RPO LD9)

The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI.

### Condition/Concern:

If the valve rotators are incorrectly placed on the exhaust valves following cylinder head disassembly and reassembly, a crank no start due to low/no compression may be noted.

### Recommendation/Instructions:

If this concern is encountered, make sure that the valve rotators are installed on the intake valves as mentioned in Step 3 of SI Document ID # 646100.

Please follow this diagnostic or repair process thoroughly and complete each step. If the condition exhibited is resolved without completing every step, the remaining steps do not need to be performed.