• Tiny
  • joesat78
  • Honda Civic

97 Honda Civic DX 2-Dr (Coupe) - Manual Transmission

My car makes a low clicking sound when it climbs a gentle incline (usually when I'm on 3rd/4th gear). The sound does not come when I climb a steep incline (2nd gear).

The sound is a very inconsistent, very low sound (similar to a penny clicking on a glass). I can hear it only when I listen to it carefully. But, I'm pretty positive its coming from under the hood.

I usually use 87 octane gas. The sound SURPRISINGLY goes away when I use a 89 octane gas.

1) Can someone tell me whether there is a permenent solution for this problem?
2) Could this be engine knocking?
3) Will I hurt the engine if I continue to run it under 87 octane gas?
4) Will the engine be okay if I run it on 89 octane gas?

your answer is highly appreciated.

Thank You,

Sunday, July 30th, 2006 AT 9:44 PM

1 Answer

  • Tiny
  • Bruce Hunt
  • Expert
  • 3,761 posts

I would say that you have answered your own question. The 89 and 90 to 92 octane should not hurt the car. Sticking with the higher octane is okay. I highly doubt you will hurt the car on 87 octane but I would favor the 89 or above. Sometimes I thing that the oil industry will call it an 87 octane but it will be less.

Was this
Monday, July 31st, 2006 AT 4:07 PM

Please login or register to post a reply.

Similar Questions