A mechanic said it could be lifters and he will add something in the oil and flush it. Do you think what could be and how much should I spend if is more serious than expected. 

Video of my engine

https://youtu.be/1WHipQwEV_s?si=yLzuMMUY17vDv0-u

This engine doesn't have hydraulic lifters.

32 minutes ago, TomsFocus said:

This engine doesn't have hydraulic lifters.

Sorry I dont get it?

1 minute ago, william97 said:

Sorry I dont get it?

This engine doesn't have oil filled lifters.  It has solid tappets.  Flushing the oil won't make any difference to them.

36 minutes ago, TomsFocus said:

This engine doesn't have oil filled lifters.  It has solid tappets.  Flushing the oil won't make any difference to them.

My 2012 Fiesta LX (1.6L Duratec, VIN: MNBJXXARJJCK17264) has a ticking noise at idle, driving, 1-2s after shutdown. I thought it has hydraulic lifters per Ford specs, so I considered an oil flush. Why do you think it’s solid tappets?

37 minutes ago, TomsFocus said:

This engine doesn't have oil filled lifters.  It has solid tappets.  Flushing the oil won't make any difference to them.

From what I’ve found, the 1.6L Duratec TI-VCT (used in my Fiesta for the Australia market) is a DOHC engine with 16 valves, and Ford’s documentation (e.g., Motorcraft parts and repair manuals) lists it as having hydraulic lifters to manage valve clearance with the variable valve timing system. 

There's a similar ticking sound from our engine but not as bad as that though, it goes after the engine is hot
but do think about getting it looked at, the ticking noise wasn't apparent 5 years ago but does get louder.

It does annoy me in a morning on start up 

The TI-VCT (variable valve timing) system has nothing to do with the tappets. The TI-VCT system uses hydraulic actuators that are able to rotate the camshafts independently in relation to the camshaft pulleys.


Like all Ford Sigma engines the 1.6 TI-VCT uses solid tappets. This means that the valve clearance needs to be checked at the specified intervals and corrected when needed. The specified interval to check the valve clearance is the same as the timing belt replacement interval (8-Years or 100.000 Miles / 160.000 KM, whichever comes first).

Since this type of engine has solid tappets without shims the only way to correct the valve clearance is by replacing the complete tappet that needs to be corrected. There are literally dozens of different thickness tappets available from Ford to be able to obtain the correct clearance. Replacing the tappets means that the camshafts need to be removed. This is also the reason why this job should be combined with changing the timing belt.

 

54 minutes ago, JW1982 said:

Since this type of engine has solid tappets without shims the only way to correct the valve clearance is by replacing the complete tappet that needs to be corrected. There are literally dozens of different thickness tappets available from Ford to be able to obtain the correct clearance.

I'm curious, does this mean that when stripping the engine to replace the solid tappets, you need to have a stock of them at hand so you can select the correct one when you discover what size you need?

8 minutes ago, StephenFord said:

I'm curious, does this mean that when stripping the engine to replace the solid tappets, you need to have a stock of them at hand so you can select the correct one when you discover what size you need?

Most people measure them and order just the sizes they need, they can generally be delivered within a day or two in the UK.

The procedure to correct the valve clearance is as follows:

1. Measure the valve clearance of each valve and write down all measured values.
2. Remove the valve cover, timing belt, camshafts, etc.
3. Remove the tappets of the valves that need to have the clearance adjusted.
4. Measure the exact tappet thickness using a micrometer and write down the measured values.
5. Calculate the required tappet thickness using the previously measured clearance, measured tappet thickness and the prescribed valve clearance.
6. Buy the required tappets. Since this is a common type of engine most Ford dealers will have the common sizes on stock. Note that usually some of the old tappets can be re-used on a different valve so usually you will only need a few new ones.
7. Install the tappets of the calculated thickness.
8. Install the camshafts, (new) timing belt, valve cover, etc.
9. Check the valve clearance -> If all measurements / calculations were performed correctly the clearance of all valves should be withing specifications.