Ticking/rattle/knock noise

Tiny
BLAZE45
  • MECHANIC
  • 1984 TOYOTA SUPRA
  • 6 CYL
  • RWD
  • AUTOMATIC
  • 80,000 MILES
It appears to be coming from the #2 cylinder.

We took the valve cover off to see if we could adjust the valves but I have never adjusted the valves on this style of engine.

I am unsure if it is a rod knock or a rocker rattle/valve tap. Given the miles, I don't know how much work has been done on it.

How do I set the valve lash on this engine?

If I don/t set the valves, how do I trouble shoot the tappet/lifter to see if it is stuck?

I was also reading that too small of an oil filter can cause some oil starvation upon startup but the tapping/knocking doesn't seem to go away once its running.

Thank you!
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Wednesday, March 23rd, 2016 AT 4:06 PM

1 Reply

Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
See if the valve opens and closes while idling if it does it's not stuck if it's a knock putll plug wire while idling if knocking noise goes away it may be a rod or piston problem.
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Thursday, March 24th, 2016 AT 7:20 AM

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