MBE 4000 DDEC VI Troubleshooting – Section 11.11 Low Cylinder Compression

Section 11.11
Low Cylinder Compression

To determine if low compression is causing excessive white smoke condition, perform the following steps:‪

1. Perform a cylinder compression test; refer to "2.2 Compression Pressure Test" .
2. Compare cylinder compression test results to specifications as listed in Table "Compression Testing Specifications" .

   Description‪	Pressure in kPa (psi)‪
   Compression Pressure at Starter Speed‪	2800 (406)‪
   Permissible Difference between Individual Cylinders‪	400 (58)‪

   Table 1. Compression Testing Specifications
   1. If cylinder compression pressure is below specifications, refer to .
   2. If cylinder compression pressure is within specifications, call Detroit Diesel Customer Support Center at 313-592-5800.