What's this "clacking" noise?

Originally Posted by DIGItonium Under hard acceleration and under boost, I hear a brief ratcheting or clacking noise in the engine or drivetrain when I abruptly take my foot off

		Nissan 370Z Forum > Nissan 370Z Tech Area > Engine & Drivetrain > Forced Induction
What's this "clacking" noise?

7Likes

LinkBack

Thread Tools

Display Modes

11-20-2012, 01:17 PM

#2 (permalink)

SouthArk370Z

Premium Member

Join Date: Nov 2010

Location: South Arkansas

Posts: 8,435

Drives: 2014 Challenger

Rep Power: 324199

SouthArk370Z has a reputation beyond repute

Quote:

Originally Posted by DIGItonium

Under hard acceleration and under boost, I hear a brief ratcheting or clacking noise in the engine or drivetrain when I abruptly take my foot off the pedal. I can easily reproduce this when I accelerate hard to about 4-5k RPM and quickly take my foot off the pedal.

It is similar to the brief clacking noise heard on some of the VQ37s on an engine start, which I also hear sometimes.

Since you have boost, I assume you have tweaked the fuel injection. My first guess is that you are not stopping fuel flow fast enough, you're getting unburnt fuel into the exhaust system, and you are hearing muffled explosions. But that's just a guess.

__________________
Steering Lock Links - Search The370Z Bookmarklet - FSM @ NICOclub
Mankind has progressed past the need for war but we haven't evolved that far. - NachoMahma

Bookmarks

« Previous Thread | Next Thread »

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 Forum Rules

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Sqeek noise and clink clink noise	kidkotic2001	Exterior & Interior	9	11-14-2012 03:38 PM
Noise when going from 1st to 2nd Help	Grindkiezer	Nissan 370Z Warranty / Scheduled Maintenance / Servicing / Repairs	9	11-14-2012 12:28 PM
DIY Noise Reduction	B&W_Evader	DIY Section (Do-It-Yourself)	21	10-27-2011 02:43 PM
ECu Noise	murphman	Texas	0	01-21-2011 03:34 PM
What's this noise?	OldGuy	Nissan 370Z General Discussions	14	03-14-2010 05:22 PM

All times are GMT -5. The time now is 07:35 PM.