Clicking sound when engine in operating temperature

UMED

MEMBER
2016 TOYOTA AVALON
3.5L
6 CYL
2WD
AUTOMATIC
25,000 MILES

When just starting the car in the morning it is normal. After some driving or when it has warmed up some clicking or air leakage sound comes up. Please listen to the audio attached. Dark video taken at the evening after driving. And another in the morning.

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5 Replies

ASEMASTER6371

MECHANIC
52,797 POSTS

Good morning my name is Roy and I will assist.

Hard to tell from the video but it sounds like a valve tap. Try getting a product called sea foam and add it to the oil. Let the engine idle for about an hour. Then change the oil and filter. If it is a sticky lifter it could help it. Otherwise you may be looking at valve lifter replacement.

Roy

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Saturday, December 23rd, 2017 AT 4:35 AM

UMED

MEMBER
3 POSTS

Thank you Roy for the answer. Just changed the oil and filter. Same. When it is cold no sound, when warmed up it comes again.
Also, I found Bank 1 long term fuel value becomes high when engine warms. Please check attachment.

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Saturday, December 23rd, 2017 AT 5:26 AM

ASEMASTER6371

MECHANIC
52,797 POSTS

Okay.
Did you use the sea foam? You need a flushing agent to break down the varnish. Just changing the oil and filter is not good enough.

The long term trims are another issue. Nothing to do with the current issue. Try to see if you have an vacuum leaks. That is the most common reason for the long term trims to be high.

Roy

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Saturday, December 23rd, 2017 AT 5:31 AM

UMED