Engine Tick

[Gemini]

After 1200 miles on my lq9 swap my engine developed a metallic tick. The sound only becomes noticeable around 190-200 degrees. My thoughts were a bad lifter, or possibly a bad o ring on the oil pump, aerating the oil. It will be a couple months before I'm able to tear into it and fix it. Does anyone have any experience with this problem on 6.0's? Or any ideas of what it might be? Thanks

[metalchips]

Hard to say with out hearing it, change oil, pull the plugs wires off one by one to hear a change. Take a large screwdriver to isolate the area-hold the handle on your ear, pull a valve cover off and check for bend pushrods, loose rockers. My 2002 5.3 when it was new had lifter tick noise when hot, a cam and new adjustable rockers took care of it. How many miles on the engine? What weight of oil? Never was a fan of the W5-30 water they say is oil.

[Gemini]

The engine has 74,000 miles. Although I bought it from a junkyard so who knows how it was treated. Oil pressure and compression are good on it. And I'm running 5/30 mobil 1 and a mobil 1 filter. What weight do you prefer?

[metalchips]

W10/30, you know that the W=water. Just kidding, I run Mobil 1 also. Maybe the new multi grade oils are better,--------------but it's worth a try. Save the old oil and use it in your wife-girlfriend's car.

[Gemini]

So the W doesn't mean water? Well I'll be damned. No girlfriend for now, and being in a small town, you know what they say.. "You don't lose your girl, you just lose your turn." Looks like I've lost my turn. That just means more money to put into the truck. Thanks for the advice, Ill keep you posted when I figure out what's causing the noise.

[metalchips]

Yes, let me know.
Have a good one.