Engine System - Diagnosis and Tests/Checking Engine Compression CHECKING ENGINE COMPRESSION NOTE: Before beginning check, ensure that battery is fully charged and injection nozzle area is thoroughly cleaned. Start engine and run at slow idle for 10 to 15 minutes. CD7215 -UN-10FEB89 CD30432 -UN-10MAY95 Remove fuel injection nozzles (see Group 40). Install 19.58-90.578* adapter (A) in injection nozzle bore with R73788* nozzle spacer (B) and 2 R92352* nozzle seals (C). Attach test gauge FKM10022* to adapter. Push throttle lever to “STOP” position. Turn crankshaft for a few seconds with starting motor. Compression pressure must be 2100 kPa (21 bar; 300 psi) minimum.
The difference between the highest and lowest cylinder must be less than 350 kPa (3.5 bar; 50 psi). This test must be performed at a minimum cranking speed of 150 rpm. A—19.58-90.578 adapter* B—R73788 nozzle spacer* C—R92352 nozzle seal* D—Holding plate* * Part of FKM10021 compression test kit CD,3274,G210,7 -19-01FEB94 210 8 CTM3274 (01JUL99) 210-8 Saran Liter Engines 060799 PN=331