Engine Thumping

[Big Bertha]

http://www.youtube.com/watch?v=gu436cnPoWU&feature=youtu.be

Probably the worst! rocker, or lifter, push rod, I just had the passenger manifold off and made sure the surface was true, let me know what your thoughts are , the injectors have 23,000 on them and are german made Bosch. at the end of the video I paused under the truck, when I shut it down it will leak fuel, but only after shut down, the other wet spot are from changing the power steering pump. Some days I hate this POS!! other days I love it :nonod:

 

[Will L.]

Isolate the knocking cylinder by loosening the injector nuts one at a time. Swapout that injector with one thats working fine to determine if it's an injector. If that's it take the injector apart and clean it just be very careful with the little pintle inside not to scratch it- clean with diesel fuel and a plastic brush- no metal.

If that is not it the next thing is to remove the valve cover and check the rocker arms, rocker arm retainers, pushrods, lifters. After that it gets ugly- drop oil pan check the rod,wrist pin,crank. With the fuel leak, my fingers are crossed you find it in that injector.

 

[6.2 turbo]

Can hear nice injector clatter,the knock seems to follow piston speed.

 

[Olddieselguy]

I agree it seems to follow piston speed. Do you feel or see any metal particles in the oil?

 

[ak diesel driver]

pull the oil filter and open it up