1991 Honda Accord 1991 Honda Accord knocking noise at high

Tiny
AUGUSTPT1
  • MEMBER
  • 1991 HONDA ACCORD
  • 4 CYL
  • 2WD
  • MANUAL
  • 164,000 MILES
I was driving my 1991 Honda Accord home the other day and I noticed that the engine gave out a knocking noise when I was on the freeway. It wasn't a continuous sound, but rather just a quick knock and then went back to normal. I was about 20 miles in to my 30 mile commute home and did this two times on the trip home. I did notice that when it did this the RPMs dropped when it knocked and then quickly came back up. What could be causing this?
Monday, May 31st, 2010 AT 7:40 AM

2 Replies

Tiny
MHPAUTOS
  • MECHANIC
  • 31,937 POSTS
Hi there, I would be concerned that this is an oil pressure problem, trouble is this is an intermittent problem and it may be hard to track down easily, I would start with and engine flush and change the oil and filter, when was the last engine service done?

Mark (mhpautos)
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Monday, May 31st, 2010 AT 7:44 AM
Tiny
AUGUSTPT1
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  • 2 POSTS
The last oil change was about six weeks ago and they didn't mention any problems then.
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Monday, May 31st, 2010 AT 7:46 AM

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