Check oil level
Check oil pressure with a mechanical gauge Improper oil pressure going to hydraulic lifters and/or engine sludge causing blockage of oil flow to lifters. Get an engine flush and oil change and see if that helps, if it doesn't get the truck to a mechanic as the problem maybe much more serious.
A tapping noise in a 2002 Camaro could indicated noisy lifters. Make sure that the oil level is full, and the oil is clean and recently changed. Lifter quieting additives can help reduce the noise some.
If coolant level is correct - could be a defective sensor
Using the board, write the word 'escape' by tapping on the lines.
could be linkage adjustment or low fluid level in gearbox
Using the board, write the word 'escape' by tapping on the lines.
Keep tapping top left corner of the slot machine until it breaks and then line up 22 yourself
Check the oil level, if it is full, you got problems, don't drive it.
There could be various reasons for the tapping. My first inclination would be to check the oil dipstick level and be certain that the oil has been changed. Worn out dirty oil will wear out a motor fast. You could need the valves adjusted or something replaced in the valve train. However, it could be something more serious. If it is louder than just a mere tapping, I would say that you possibly have a rod knocking. If you catch this early enough, then it could be fixed by a mechanic with a few parts. If you wait too long, then the rod could eventually eat through your engine wall. The only safe way to fix that would be to replace the engine block or the whole engine.
Take a look at the oil level. Pull the dip stick and check where the oil level is. You may only be low in oil. Is the engine tapping? If not, take a look at the oil pressure switch. Does it have alot of oil around it? You may want to replace it. If you do have a tap in the engine, you may want to have the oil pump checked for output pressure. Hope this helps.
It COULD be caused from the lifters bleeding down after the enginge has set for 2 months. Lifters make a tapping type of sound. Oil has a tendency to drain away from parts after sitting for a while.. It may even be your bearings were making noise. Bearing make a knocking..hard rapping type of sound. If the noise went away after a short time, it ain't no biggie. If it still makes noise you may want to have a tech inspect it.
check gearbox oil level first could be low on fluid dextron 2
how do you check transmission fluid level in a 2001 chevy metro