I have been off the diesel list for some time and have managed to find the mbz community again thanks to Marshall. Anyway - I have this puzzle with my OM617.912 in my Gwagon - There is light ticking noise emanating from the exhaust pipe exit , and about engine speed( I suspect when one cyl fires ) . When loosening one fuel line at a time it appears that #2 cyl is not contributing much ( speed drop and engine note does not change much ) however when I did a compression test results ( engine hot ) are as follows - #1 is very low at 9 bar and all others are 16 - 18 bar. Oil consumption is in spec at 1 l/1000km.
The compression test indicates that there is an issue with Cyl # 1 yes the fuel line removal test indicates #2 is faulty. Engine starts easily when cold , no so well when hot without glowing ( 3 -4 engine revolutions before is starts ) Any ideas what could be going on? Could there be a crack between #1 and #2 cyl ? Peter Merle Cape Town
