1989 Acura Legend tapping noises in engine

Tiny
WELDERMAN406
  • MEMBER
  • 1989 ACURA LEGEND
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 18,000 MILES
What is causing the constant tapping noise in the top of my engine and how do I fix it? Thank you, Kenny.
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Sunday, June 7th, 2009 AT 6:40 PM

3 Replies

Tiny
MHPAUTOS
  • MECHANIC
  • 31,938 POSTS
Hi there,

This will probably be a faulty hydraulic lifter, you can try using an engine flush as this may wash out some of the carbon that can build up in the hydraulic lash adjuster, start here.

Mark (mhpautos)
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Sunday, June 7th, 2009 AT 6:54 PM
Tiny
WELDERMAN406
  • MEMBER
  • 4 POSTS
I flushed the engine twice with engine flush and it still is tapping. I also changed the oil twice and used oil additives, but nothing works. What can I do to fix this problem and will it hurt the engine to drive it this way?
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Sunday, June 7th, 2009 AT 7:29 PM
Tiny
MHPAUTOS
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  • 31,938 POSTS
Hi there, you will need to get the faulty lash adjuster replaced, this ids not a huge job, the rocker gear needs to be lifted to access it, you are doing some damage to the rocker & the valve stem, short term not a real issue, but I would be getting it fixed sooner rather than later.

Mark (mhpautos)
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Monday, June 8th, 2009 AT 12:30 AM

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