Engine "ticks" and misses when cold then clears up when hot, runs fine

The general rule is a change every 12 months. Not all vehicle manufactures use a dedicated oil service light. Some use a message on the dashboard display or even the Check Engine Light. If you are in ANY doubt change it anyway! Check your oil on the dip stick and in the fill hole for the colour and, using latex work gloves, the feel of it between your fingers. Good oil should be the colour of very weak coffee and very smooth and slippery to the touch. If the oil is dark coloured, black or gritty to the touch Replace it as soon as you can! Also look out for any "mayonnaise" like build up in the filler hole. This is one of the signs of a blown head gasket.
How often you change the oil can also depend on a few other things.
-Miles driven in a year,
-How hard you drive it,
-Where in the world you live.
- Past history of the car.
If you drive a lot of miles I would suggest you change the oil every 12 months even if you don't think it needs it. Oil cleans as well as lubricates thats why it turns black over time. I use 10,000 to 12,000 miles or once a year which ever comes first as my rule.
If you do less than 5000 miles a year you could possibly stretch it to every 18 months or 2 years BUT NOT more than that.
If you drive the vehicle hard do it every 12 months no longer than that. Your giving the engine a good work out so fresh oil is always good.
If you live where it is really cold, really hot or very dry you will need to change it every 12 months every time as the extremes of temperature alter the thickness of the oil making it behave differently, (Cold - it's thicker and harder to flow, Hot - It's thinner and flows very easily).
An older car may not have been looked after properly so really old, dirty, black oil can actually damage an engine.

hi putting seafoam in fuel will clean the valves and pistons over time to use to do lifters you need to add to oil measure out the right amount for the oil measurements on the can.. also the tapping is it more when its cold or just the same no matter hot or cold or is it more louder when hot. when was the last time the timing was checked, are you using 5w/30 or 10w/30 oil.

possibly low compression due to no keeping the motor oil changed
also could be low fuel pressure on pump or fue filter clogged

it sounds like your oil pump is not working good. check oil pressure at cold and what weight oil are you using. it may be too heavy for it to get up to the top of the motor quick.if there was any build up in the head when you changed the lifters you may want to flush the oil system good then put fresh oil back in

You need a valve adjustment. It's no a very expensive job and will improve overall performance.

in many country's oil standart is deferent for example in indonesia, there is only twop season... so they using oil with sae 30-40, but in europe they using oil wiht weigth viscosty more heavy...

oil good using for 10.000 km, or approximetely 25k miles..

there is some solution... check the engine if there no oil leak, so your car is fine...

sounds like the hydraulic lifters havent filled up with oil after standing you may need to replace them check the camshaft while youre at it for wear. to check oil pressure accurately a gauge needs to be screwed into the engine

look into a oxygen sensor or a bad coolant sensor and the wiring.

There was a "Silent Recall" for this problem. Basically the heads, lifters, and cam are all replaced. I had this fixed under the recall on 1995 Pathfinder when it had 44,000 miles on it. Now it has 175,000 and has been had the cold engine noise since 145,000. The ticking is more irritating that it is harmful (Per my mechanic). I don't want to stick 1,000's of dollars into it anymore, tolerance is much cheaper.

hi try getting a service done make sure they use genuine toyota oil and filters

cheers
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