Ticking noise in engine

indicates it is a hydraulic lifter problem

What's That Ticking Sound Coming From Your Car's Engine?

www.popularmechanics.com/.../whats-that-ticking-sound-coming-from-...

Apr 18, 2014 - My engine has developed a strange ticking sound. Its whisper-quiet before an oil change, and then makes a loud tapping after a new filter and ...

Engine Tapping - Auto Repair Help

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ENGINE MAKES TAPPING NOISE WHEN STARTED by Mark Davidson. SYMPTOM SUMMARY The engine emits a tapping noise on start up. The noise may ...

Engine Ticking Clunking Noise - Repair - YouTube

? 9:37
https://www.youtube.com/watch?v=ilDtnJi_BS0
Mar 15, 2013 - Uploaded by knurlgnar24
One of my vehicles started making a rather disturbing sound so I went to investigate and to hopefully fix it.

could possibly be a lifter tapping (Ticking) ,depending on how many miles the vehicle has on it might be time for lifters to be adjusted,most foreign overhead cam engines must have lifters adjuster periodically ,if you turn on the air its puts more of a load on the engine causing a louder sound (also check oil level an engine low on oil will start to tick too.. the more wear the engine gets the looser the lifters can get over time ,look in your service manual if you have one and see what the intervals are on lifter adjustment this can give you an idea.
possible only if
the ticking sound is coming from the top of the engine usually comes from under the vavle covers where the lifters are located,

Lifter noise(s) can be a combination of things........ 1. High mileage on engine. 2. Not using the correct oil. 3. Lots of sludge build up in motor due to lack of oil changes and the quality of oil that you are using. Hydraulic lifters rarely fail but it does happen, given the conditions on how the car was maintained. I can offer you a solution but no guarantees on what might quiet this lifter down. It's a 50/50 chance. On your next oil change, I would recommend taking your vehicle to a facility that sells BG products. It's a company that formulates chemicals that have great cleaning properties to your fuel system and oil lubricating systems in your engine and at the same time, it is safe on all rubber seals in your engine. (Especially Higher Milage Vehicles) Ask for BG MOA to be added in you next oil change or if you do your own oil changes, you can find this product on line and can purchase from there. What the BG MOA does, it helps break up sludge and build up on the inside of your engine and helps to free up your valves, piston rings and noisy lifter(s). Hydraulic lifter(s) tend to make noise when they can't sufficiently pump up with oil due to sludge and build up blocking the oil inlet passage. Worn lifters on cold start up may be very noticeable but eventually the ticking goes away after engine warms up and the hydraulic lifter(s) had time to pump up. Make sure that you don't have a exhaust manifold leaking as well due to a crack or a failing exhaust manifold gasket. This can also emit a ticking noise in which can be misdiagnosed for a ticking lifter. A leaking exhaust manifold can usually be identified by the ticking noise getting louder and faster when accelerating and quieter and slower when decelerating. Ticking noise is loud on cold start ups but not noticeable at all when engine is at operating temperature. Hope this will help you out.

Its your valves that are making those ticks, check the level of your oil and add if necessary, if this does not help you will need to get a valve job done and possibly a complete top engine rebuild. You can eliminate some of this noise by additives that will give your oil stability and the engine some extra time. Check with your local parts store or mechanics shop

all depends on how old the motor is. I would suspect the timing chain and tensioner,

might be the valves have been damaged running without oil
- or the crankshaft / camshaft / main bearings
most probably you have to let the engine be rebuilt by a mechanic
(expect cost of more than US$ 2.000)
or get another (used) engine at a scrapyard

unfortunately at 140,000 miles much like humans parts start to wear... now you can try to flush the oil system...I DON"T RECOMMEND IT.... I have seen engines tear apart from engine oil flushes.... drain refill the oil/filter with new oil and an additive may help, or pin down the noise to what lifter is going south and have it replaced... may end up being a very expensive repair depending on what they find when they open the engine up with high mileage...or just continue driving it untill it completely wipes out... I do belive its a hydraulic lifter that is not pumping up causing the tick and if so they usually last a long long time noisey.

I believe it is called piston slap

read all about it here http://www.pistonslap.com/whatisit.htm

problem here is a ticking to one is a knock or a tap or a thud ect to others so of my experiance with engines if its a ticking that gets louder with the engine getting warmer its got to be the tappets its the only thing that would get louder if it gets louder when accelerating it could be ignition timming causes pinking most other things on engines that cause ticking sounds could be something catching fuel pumps cause a ticking noise but are not normally affected by engine temp yates210456