Jump to content

Loud clicking/clunking noise when accelerating. Vtec won't engage.


Recommended Posts

Hello. I have a 1996 Honda civic 1.6 vtec with an auto trans. Yesterday I noticed a lack of power and that instead of my vtec engaging there would be a loud clicking/clunking noise very rapid. When I let off the gas it would stop. Eventually as I drove home the noise got progressivly worse until I actually pulled off the road because I was worried for my car. The noise now is anytime I touch the gas pedal. About a week ago my alarm system stopped working, not sure if the two are related by any means. My car is sitting on the side of the road, I'm going to tow it today and try to figure it out, any ideas?

Link to comment
Share on other sites

First thing, when do you think the vtec should engage?


Secondly, I would start by seeing if the timing is correct. There is a chance that it jumped a tooth on the timing belt. I would certainly be looking of an ignition timing issue since it is a probable cause and costs nothing but time to diagnos.


Third, it sounds like you may have a bad low end bearing (a.k.a. either a rebuild or replace the engine).


Play around with it and see what you find.

Link to comment
Share on other sites

So it's isn't the timing. I checked and there is no oil. I added 3 quarts and now the tapping has gotten more quiet but is still there. The tapping is completely uniform and I cannot tell where it is coming from although it's definitly from the engine. I recently checked the oil about a month prior and it was of normal level. After adding oil an starting the car, I checked the oil and it was Black, almost silver. Any ideas?

Link to comment
Share on other sites

Tapping might be a rod knock. At the very least is would be the valves. If it is the valves just ignore it, many hondas do it. You could take the time to adjust the valve lash and correct it if you wanted and it would quiet down. if it is the rod just keep driving it till it blows and replace the engine.

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

  • Create New...

Important Information

Terms of Use | Privacy Policy | Guidelines
We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.