My 6.0 did it also. Not to long ago I pulled the front diff. and took the pan off. Replaced the o-ring on the pickup tube and so far so good. The dealer said I should've seen an oil pressure problem, but I didn't.

 

How many miles did you have on your motor when it started??
I may replace the o-ring just for peace of mind,seems like the easiest thing to do.If I'm lucky it will fix it.
Thanks for all the feedback/info guys

 

I'm not ure about checking the lifters, but you can pull the valve covers and look at all the rockers when there is no pressure on the spring by wiggling them. If they wiggle more than it should, then chances are you got a rocker that let loose of it's needles. Maybe you can check the pushrods at the same tmie by making sure they are all tight. If one is bent excessivy it will be looser than the rest. I think you should be able to turn them with your fingers when there is no lift from the cam.

 

i know exactly what the problem is, that engine is in your truck instead of mine. i don't think it would have the problem if i were the owner. hope you get it sorted out.

 

I bought my truck with 70,000 on it, it made the noise ever since I owned it. Always was concerned about the noise but never knew what to do about it. I noticed tonight, it had a little lifter noise when I first started it up after work (about 20 degrees +/-) nothing like it was though. What weight oil are you running? I use Rotella 15-40 and one quart STP every oil change.

 

That's prolly a little thick for that type of weather. I would Step down to a good name brand 10-30 and use that instead of Rotella with an additive. Just my .02 though.

 

Crazy idea, what are the chances of it being Carbon knock?? Or is that just wishfull thinking?

 

mine was doing it bad this morning... and it lasted for a while... longer than normal but it was like 18* last night...

 

It could be Randy... look at the video from this past weekend. On one of you runs you blew a lot out when you shifted to second.

 

Well, we did a to engine clean at the shop last night. It smoked up a storm,so I know it was carboned up real good.I was hoping that would do it, but this morning the noise was still there,it wasn't any better.
I saw that smoke on the vid,I must be running pretty rich??
I'm going to drop the oil pan this weekend and replace the o-ring on the pick up tube. Maybe i'll get lucky.
What do I need to pull the pan?? Is the oil pan gasket reusable??