PeachParts Mercedes-Benz Forum - View Single Post - Leakdown test om606

jake12tech · #11 12-23-2018, 03:36 AM

Quote:

Originally Posted by Diesel911

I like to get a better idea of what is going on also.-----But, a head gasket leak can be caused by a warped or even cracked cylinder head or even the same with the Block (that is rare).----I think more importantly is if it turns out the leak is getting by one of the pistons/cylinders it would be a new ball game.---------------Also look for leaks around the pre-combustion chamber locking nuts.-----On the aluminum heads the sealing area of the Pre-combustion chamber sometimes warps.

Thank you. I did try to pin point my compression leak with a stethoscope in the areas it sounded like it was coming from. It’s odd, you can only hear it from the valve cover and the exhaust side of the engine. Completely silent on the intake side. I’m confident it is something top end related considering I have minimal blowby (comparable to my E300 in the 200k range). Also, something I learned along the way was if you have a significant compression leak from the bottom end, you can pull the dipstick out about a inch and feel the compression leak or push the dipstick out further if a bad enough seal.

I also do have disappearing coolant, no visible leaks, but I can’t smell it out the exhaust either. Just the odor of I burned diesel. And have a semi dead cylinder in #2. I think it’s going to be real interesting to pin point the problem.