Okay got the engine going, I had some bad injectors, and had the shutoff valve hooked up wrong and a collapsed inlet filter. So today I got the engine running and it ran great, 3 bar oil pressure, except, once it started warming up it was knocking hard, so I cracked each line to see if it would stop and I cracked #2 and no change in tone. I listened with an automotive stethoscope and heard that bad noise around #2, So I checked compression on cylinder #2 it has 25 psi compression So im thinking i have a broken piston now. Cylinder 1 has 225 psi now, The engine got to 80 degrees Celsius, so Im thinking the engine is gonna get a new piston in hole #2. . I know the engine was only running on 4 cylinders because it was rocking terrible. Could this be anything other than a broken piston which creates this low low compression and a terrible knocking????


Thanks in advance...

__________________
Regards,
Ian White

1995 E300 Diesel w124 OM606
2014 E550 w212 M278 biturbo

2001 BMW 740i E38 M62 (past)
1981 300SD w126 OM617 (past)