Loud Fluttering sound
Thread Starter
Banned
Joined: Mar 2004
Posts: 307
Likes: 1
From: Palmetto, GA
Loud Fluttering sound my engine has developed a loud "fluttering" type sound.. almost like soemthing is flapping its wings when I rev the engine up. Or go through the rpms. Its coming from either the header on the passenger side or under the valve cover. My header almostl ooks burnt ontop of it where it connects ot the head... does this mean the header has came loose? the higher the rpms get the louder the fluttering sound becomes.. or is it something much worse as a rocker or.. valve? ...... 
Staging Lane
Joined: Apr 2004
Posts: 71
Likes: 0
Sounds like the air check valve. You can make a restirctor plate from sheet metal.
You drill a 3/16th hole in the center of the plate and then sandwich it between 2
new stock gaskets. You use the gaskets as a template to make the plate. You need
some sheet metal (small piece) and 4 new stock gaskets (do both sides) and drill
and drill bits. Takes about 1 hour and works! I did it.
I can probably send you detailed plans from my office - pm me if you need to.
You drill a 3/16th hole in the center of the plate and then sandwich it between 2
new stock gaskets. You use the gaskets as a template to make the plate. You need
some sheet metal (small piece) and 4 new stock gaskets (do both sides) and drill
and drill bits. Takes about 1 hour and works! I did it.
I can probably send you detailed plans from my office - pm me if you need to.
Thread Starter
Banned
Joined: Mar 2004
Posts: 307
Likes: 1
From: Palmetto, GA
Originally Posted by Hawkeye2
Sounds like the air check valve. You can make a restirctor plate from sheet metal.
You drill a 3/16th hole in the center of the plate and then sandwich it between 2
new stock gaskets. You use the gaskets as a template to make the plate. You need
some sheet metal (small piece) and 4 new stock gaskets (do both sides) and drill
and drill bits. Takes about 1 hour and works! I did it.
I can probably send you detailed plans from my office - pm me if you need to.
You drill a 3/16th hole in the center of the plate and then sandwich it between 2
new stock gaskets. You use the gaskets as a template to make the plate. You need
some sheet metal (small piece) and 4 new stock gaskets (do both sides) and drill
and drill bits. Takes about 1 hour and works! I did it.
I can probably send you detailed plans from my office - pm me if you need to.
I know for a fact its not it.. its coming from the passenger side , the header tube closest to the front of the car. It's definetely a fluttering type noise.
is it possible the gasket is messed up? Or maybe retightening the bolts will fix it?
Staging Lane
Joined: Apr 2004
Posts: 71
Likes: 0
If it's a gasket you may be able to feel the leak with your hand. The problem
is the cause may be not where you hear the noise, if you know what I mean.
Have you tried moving the throttle by hand and putting your other hand
near the header flange?
is the cause may be not where you hear the noise, if you know what I mean.
Have you tried moving the throttle by hand and putting your other hand
near the header flange?
