As much as I hate it I think I may have a bad cylinder &gt; :'( . Im blowing an awful lot of oil out of my crank case bleed tube (enough to coat the undercarriage of my truck with a light film of oil).I was told I may have a bad cylinder or maybe a ring. If I am wrong please tell me because Ive been told it is expensive enough that Id be better off buying a new motor, is this true? Has anyone else ran into this before, if so please help. Also if at all possible, can someone tell me about how much $$$ it will cost me to fix minus labor.<br> Thanks<br> Wheels

 

Check your lift pump for leakage on the engine side of the pushrod. That is the usual cause of excessive blow by and drooling from the draft tube on a 12 valve.<br><br>Your mileage is a way low for a problem with a cylinder unless you have been using crappy oil filters or quicky lube oils, and damaged the engine.<br><br>An oil analysis and a compression test is dirt cheap at a Cummins Service Center. That will put the issue to bed once and for all.<br><br>If a piston is bad, there are good rebuilt engines out there for much less than a new engine.

 

Check your timing gear cover for the dreaded KDP signs!