National Firebird and Trans Am Club Message Board

General Area => General Discussion => Projects and Updates => Topic started by: hdhunr on January 15, 2015, 07:56:39 PM

Title: Knocking when cold
Post by: hdhunr on January 15, 2015, 07:56:39 PM: Hi everyone,
I am a brand new member. Just bought my son a 2002 FB convertible for his very first car.
Need your ideas...when the 3.8 liter engine is cold (and I mean sitting without being started for two or more days cold) I have a very noticeable knocking in the engine. Once it's warm it smooths out. I know it's probably a sticking piston/valve or something related but I would like to tap into the membership expertise and get your opinions on a possible fix. I am no mechanic, but I know how to get into an engine for something simple (valve cover gasket, for example). Any ideas?
Kevin and Chase
Title: Re: Knocking when cold
Post by: february2015 on January 15, 2015, 11:25:44 PM: Find a shop that handles BG products and get a Can (pt. i think) of MOA ( stands for motor oil additive) put it in your oil it may help and should be around $10 or less. It helps clean sticking valves.
Craig Lowrance
Title: Re: Knocking when cold
Post by: february2015 on January 15, 2015, 11:29:11 PM: Bad casting on Pistons been there. Was told by my buddy a GM mechanic let it go

Jimmy Riddler
Title: Re: Knocking when cold
Post by: gorin002 on February 28, 2015, 12:54:46 PM: just welcome to the club