1991 Honda Accord 1991 Honda Accord knocking noise at high

1991 HONDA ACCORD
164,000 MILES • 4 CYL • 2WD • MANUAL
Avatar
AUGUSTPT1
  • MEMBER
  • 2 POSTS
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?
May 31, 2010 at 12:40 AM
Avatar
MHPAUTOS
  • ✓Experienced 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)
May 31, 2010 at 12:44 AM
Avatar
AUGUSTPT1
  • MEMBER
  • 2 POSTS
The last oil change was about six weeks ago and they didn't mention any problems then.
May 31, 2010 at 12:46 AM
🔧 Tools & Auto Repair Parts
Find automotive tools, diagnostic equipment, and replacement parts for your next repair.
Shop on Amazon →
Paid affiliate link. As an Amazon Associate, we earn from qualifying purchases.
Add a reply
Join 2CarPros for free, one of the most advanced car repair communities on the internet. From first-time drivers to seasoned mechanics, everyone is welcome to reply, share details, and get better answers. You can add a temporary image or video first; uploads are limited to 20 MB.

Ask a new question

Frequently Asked Problems for This Vehicle