Leafangel
Full Member
Ok, I have a 2003 AV with a 5.3 and just fewer than 62K miles. It has been a generally dependable, good running vehicle. Two days ago I took it for a short drive and everything was as usual. Yesterday, I get in it to go to town, start it up, and whoa...... terrible lifter noise. I mean this thing sounded like it had no oil pressure. I immediately shut it down. I started it again and same thing, terrible lifter noise. I checked the oil pressure gauge and it reads right where it normally is. I shut the engine down again. I get out and check the oil level. It reads normal on the dipstick. The oil on the dipstick appears normal, no unusual smell or color.I haven't let the engine run for more than 10 or 15 seconds each time and haven't run it more than a minute total since this started for fear of causing more damage. So far as I can tell it is lifter noise. All at the top of the engine and distinctly different than crank or rod bearing nock. What gives? How does an engine go from running perfectly, or so it seemed, to this?