CamaroZ28.Com Message Board

CamaroZ28.Com Message Board (http://www.camaroz28.com/forums/)
-   LT1 Based Engine Tech (http://www.camaroz28.com/forums/lt1-based-engine-tech-9/)
-   -   why does my engine "pop" after I let off the gas? (not exhaust backfire) (http://www.camaroz28.com/forums/lt1-based-engine-tech-9/why-does-my-engine-pop-after-i-let-off-gas-not-exhaust-backfire-266420/)

mineralwater 05-28-2004 01:00 AM

why does my engine "pop" after I let off the gas? (not exhaust backfire)
 
After I let off the gas, there is a distinct, loud, and metallic "click" that comes from under the hood, on the passenger side. I thought it might be pinging or detonation, but the rpms stay very smooth and the car does not skip or miss a beat. This usually happens around 2000-2500rpms about 1 full second after I let off the throttle.

When I let off the gas, it sounds one marble dropping into a tin can. It happens once, and it is intermittent, only happens once in a while. But if it does happen, it is always after I just let off the gas.

It's driving me nuts! :mad: what could it be?

mineralwater 05-28-2004 10:15 AM

help, anyone have any ideas? :(

RC5 05-28-2004 11:36 AM

Dont rev your new engine. Feel the valve covers. Hint: 1.6


RC

mineralwater 05-28-2004 07:19 PM

Quote:

Originally posted by RC5
Dont rev your new engine. Feel the valve covers. Hint: 1.6


RC

thanks for the post. are you saying the 1.6s are not clearing, and hitting the valve covers?

Its weird, because it just happens once.. one big "pop" only after i let off the gas. Hmm. Was just worried that it might be something internal.

If it's ok, I guess its not a big deal - just would like to know for sure. It only happens when the engine is under load, so I can't really "feel" the valve cover...

dnz28 05-28-2004 07:33 PM

stuck valve most likey.

Mindgame 05-28-2004 09:04 PM

Check the exhaust system for any leaks. Some popping on decel is natural. Its just raw fuel making its way through during overlap and igniting in the exhaust.

-Mindgame


All times are GMT -5. The time now is 10:49 PM.

Powered by vBulletin® Version 3.8.6
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
SEO by vBSEO ©2011, Crawlability, Inc.

Garage Plus vBulletin Plugins by Drive Thru Online, Inc.

Copyright © 1996-2013 CamaroZ28.Com. All rights reserved.