ok I just had this engine rebuild 15k miles ago and I'm been getting fuel in my oil tank and it's been running bad for about 800-1000 miles. I've been told that fluid in the oil tank will destroy rings and bearings. Well I did a leak down test and my rings seem fine and hold pressure but I just pulled the cam out and saw this bearing. The cam looks perfect. No scratches or anything. I can catch my fingernail in the scratch in the bearing. Am I overreacting or do I need to have my motor rebuild again?

 

id change the cam bearings
no sense and putting it back together just to wonder if its gonna hold or not when you can spend maybe a hundred bucks and not have to worry

plus if you can feel it with your nail it almost def has to be replaced

 

Just the front bearing is fairly easily replaced. If the others are like that, you have to pull the engine to replace them.

 

I see scratches similar on the second bearing. If I'm pulling the engine I might as well replace all the bearings right?

 

Absolutely. Cost of bearings is small compared to cost of labor and cost of things that ride on the bearings.

 

nuff said thanks

 

That bearing is pretty worn for only 15K miles, and those scratches indicate dirty assembly practices, not gas in the oil.