Why is my engine clicking

Richard, It could be something as simple as a bad belt tensioner to something as major as worn bad rod or crank bearings.
Best to find a knowledgeable buddy or a mechanic you can trust and have them diagnose.
Hope this helps you out. Good luck.

if you just had the oil and filter changed..the technician did not reset the alert in the cars command module..therefor the check engine light will come on until this alert is removed from the start up sequence in the cars' computer.. get that done and it should be fine..

it wont go away because their is a mechanical problem and or problem with oil change [ not enough oil wrong filter etc ] will need to have vehicle scanned for the fault code to determine the problem most auto stores offer this service for free

Best would be to check the oil pump filter in the sump of the engine. these also clog up and drops the oil pressure resulting in a warning light

It's listed in your owner's manual. Schedule A is normal driving conditions.
SCHEDULE "A"
7,500 miles (12 000km) or at 6 months
- Change engine oil.
- Replace engine oil filter.

15,000 miles (24 000km) or at 12 months
- Change engine oil.
- Replace engine oil filter.

22,500 miles (36 000km) or at 18 months
- Change engine oil.
- Replace engine oil filter.
- Inspect front wheel bearings.
- Inspect brake linings.

30,000 miles (48 000km) or at 24 months
- Change engine oil.
- Replace engine oil filter.
- Replace engine air cleaner filter.
- Replace spark plugs.
- Drain and refill automatic transmission fluid and filter (4.7L).

37,500 miles (60 000km) or at 30 months
- Change engine oil.
- Replace engine oil filter.
- Drain and refill automatic transmission fluid and filter (5.2L/5.9L).
- Drain and refill transfer case fluid.

45,000 miles (72 000km) or at 36 months
- Change engine oil.
- Replace engine oil filter.
- Inspect front wheel bearings.
- Inspect brake linings.
- Flush and replace engine coolant at 36 months, regardless of mileage.

52,500 miles (84 000km) or at 42 months
- Change engine oil.
- Replace engine oil filter.
- Flush and replace engine coolant if not done at 46 months.

60,000 miles (96 000km) or at 48 months
- Change engine oil.
- Replace engine oil filter.
- Replace engine air cleaner filter.
- Replace ignition cables (5.2L/5.9L).
- Inspect PCV valve, replace as necessary.
- Replace spark plugs.
- Inspect auto tension drive belt and replace as necessary (5.2L/5.9L).
- Drain and refill automatic transmission fluid (4.7L).

67,500 miles (108 000km) or at 54 months
- Change engine oil.
- Replace engine oil filter.
- Inspect front wheel bearings.
- Inspect brake linings.

75,000 miles (120 000km) or at 60 months
- Change engine oil.
- Replace engine oil filter.
- Drain and refill automatic transmission fluid and filter (5.2L/5.9L).
- Drain and refill transfer case.
- Flush and replace engine coolant if it has been 30,000miles (48 000km) or 24 months since last change.
- Inspect auto tension drive belt and replace if required.

82,500 miles (132 000km) or at 66 months
- Change engine oil.
- Replace engine oil filter.
- Flush and replace engine coolant if it has been 30,000miles (48 000km) or 24 months since last change.

90,000 miles (144 000km) or at 72 months
- Change engine oil.
- Replace engine oil filter.
- Replace engine air cleaner filter.
- Replace spark plugs.
- Inspect front wheel bearings.
- Inspect brake linings.
- Inspect auto tension drive belt and replace as necessary.
- Drain and refill automatic transmission fluid (4.7L).

97,500 miles (156 000km) or at 78 months
- Change engine oil.
- Replace engine oil filter.

105,000 miles (168 000km) or at 84 months
- Change engine oil.
- Replace engine oil filter.
- Flush and replace engine coolant if it has been 30,000 miles (48 000km) or 24 months since last change.
- Inspect auto tension drive belt and replace if required.

112,500 miles (181 000km) or at 90 months
- Change engine oil.
- Replace engine oil filter.
- Drain and refill automatic transmission fluid and filter (5.2L/5.9L).
- Inspect front wheel bearings.
- Inspect brake linings.
- Flush and replace engine coolant if it has been 30,000 miles (48 000km) or 24 months since last change.

120,000 miles (192 000km) or at 96 months
- Change engine oil.
- Replace engine oil filter.
- Replace engine air cleaner filter.
- Replace ignition cables (5.2L/5.9L).
- Inspect PCV valve, replace as necessary.
- Replace spark plugs.
- Inspect auto tension drive belt and replace as necessary.
- Drain and refill automatic transmission fluid (4.7L).

Thanks for using FixYa -a 4 THUMBS rating is appreciated for answering your FREE question.

try the control module

Ive worked in a Toyota dealership for the past 11 years and yes I have seen oil filters work there way loose and vibrated off, but you are right, not usually after 4 months of driving. It could have happend if it was loose origanally and then it finally worked its way off. idk its hard to tell- but ill tell you one thing usually when this happens it it with an aftermarket oil filter and not a genuine Toyota filter. and 08 Camry motors rarley blow and dont burn or leak oil so the filter over time had to be the only way for it to loose oil. Im not trying to take the dealers side cause i work at one- all im saying is that it is possibe.

It could be a failure of your sending unit. This is screwed into the block just above your starter and next to the oil filter. IF that gets gunked up and/or too leaky, the signal to the ECU will be bad and it will intermittently think you have lost oil pressure.

REPLACE FUEL FILTER THEN FUEL PUMP

It's not that big of a deal. The air box comes out by removing two screws and a couple of hoses. Once it is out the top of the canister is easily accessible.