Loud motorcycle noise when accelerating - HondaCivicForum.com

Go Back   HondaCivicForum.com > General Automotive > Mechanical Problems & Technical Chat

Welcome to the HondaCivicForum.com.
If this is your first visit, be sure to check out the FAQ by clicking the link above. You may have to register before you can post: click the register link above to proceed. To start viewing messages, select the forum that you want to visit from the selection below.

LinkBack Thread Tools Search this Thread
Old 10-01-2012, 09:33 AM
Junior Member
Join Date: Oct 2012
Posts: 3
Default Loud motorcycle noise when accelerating

I need some help please. I have a 2000 Honda Civic Ex 2 door with 125,000 miles on it. I was driving on some big hills over the weekend and my car was having trouble getting up them/accelerating while going up them. It was not a huge deal, but suddenly, now my car is making a loud motorcycle noise when I accelerate. It makes a softer motorcycle noise when it is not moving, but it is very loud when ever I accelerate. It is a manual, so each time I shift it is loud when accelerating. I just got a new timing belt last year, and an oil change less than a month ago. The noise seems to be coming from the front more than the back. When I put the car into neutral the sound disappears. The car does not appear to be shaking or slipping - it is driving just fine, the issue is the loud noise. It this the muffler or the engine? What could this be? Any advice or experience would be greatly appreciated.
Reply With Quote
Old 10-01-2012, 09:57 AM
boiler1's Avatar
HCF Member
Join Date: May 2008
Posts: 279

Since you're getting reduced power it sounds like you have a restriction in the exhaust, probably at your catalytic converter. There's a honeycomb looking thing in the cat that can get clogged or damaged. Dont let this go for long.
Reply With Quote
Old 10-01-2012, 10:38 AM
Junior Member
Join Date: Oct 2012
Posts: 3

Ok, I will get it looked at this week. Thank you so much for your assistance!
Reply With Quote
Old 10-01-2012, 10:46 AM
Recognized HCF Member
Join Date: Jun 2007
Posts: 10,023

This could be a hole in an exhaust pipe or even a completely broken pipe. Idle the engine then go and block the tailpipe with a rag. Pressure should build up quietly. If there is no flow from the tailpipe at all, or you hear hissing noises under the car, there is a leak in the exhaust system.
Reply With Quote
Old 10-02-2012, 01:03 PM
Junior Member
Join Date: Oct 2012
Posts: 3

Thanks for the advice guys - I really appreciate it. It was looked at today and there is a huge crack in my catalytic converter - so it needs to be replaced. Thanks again for the helpful advice!
Reply With Quote

Similar Threads
Thread Thread Starter Forum Replies Last Post
high pitch noise when accelerating 98civicftw Mechanical Problems & Technical Chat 7 07-15-2010 04:21 AM
Loud, loud, loud!!! islandtuner Header, Intake, & Exhaust 27 05-04-2009 09:54 AM
rubbing noise when accelerating on 94 civic brian400ex Mechanical Problems & Technical Chat 4 04-05-2008 06:47 PM
Stock 99 Auto accelerating noise syncro Mechanical Problems & Technical Chat 1 08-16-2007 02:27 PM
Loud or loud and obnoxious TrAvMaNFTW Header, Intake, & Exhaust 6 02-19-2006 01:19 PM

accelerate, accelerating, acceleration, car, catalytic, civic, converter, honda, increases, loud, louder, motorcycle, noise, sounds, suddenly

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

All times are GMT -8. The time now is 02:13 PM.

Honda and the Honda marquee are registered trademarks of the American Honda Motor Company, Inc. Neither American Honda Motor Company nor its subsidiaries or affiliates shall bear any responsibility for HondaCivicforum.com content, comments, or advertising. HondaCivicforum.com is not affiliated with American Honda Motor Company in any way. American Honda Motor Company does not sponsor, support, or endorse HondaCivicforum.com in any way. Copyright/trademark/sales mark infringements are not intended or implied.