EGR
Melting Slicks
Joined: Nov 2000
Posts: 2,663
Likes: 3
From: Palm Harbor FL
Re: EGR (Corvettelvr73)
It takes some exhaust gas, and reintroduces it to the engine through the carb. Causes the engine to burn a little cooler. It's an emissions thing. I took mine out and installed an EGR block off plate. Of course, I don't have emissions inspection.
Burning Brakes
Joined: Dec 1999
Posts: 924
Likes: 1
From: Houston Texas
Re: EGR (Corvettelvr73)
Make sure it's working properly by feeling up under the circular head with your finger. With the car at idle there should be enough vacuum to pull the plunger up, then have someone turn off the car or unplug the hose while still feeling underneath it to make sure it moves down and closes. Under full throttle it should close so you get max performance. If it is not working properly or is stuck in the open position your lossing some H.P. under full throttle. Hope I got this right. Someone else chime in if I didn't.
Racer
Joined: Nov 1999
Posts: 387
Likes: 0
From: Lombard IL
Re: EGR (81vette)
The valve should be down (closed) at idle, rev the engine a little and the diaphram will go up. This only works once the engine is warm since the vacuum source is connected to a thermal switch.
Le Mans Master
Joined: Aug 2001
Posts: 7,804
Likes: 4
From: Standing still with all my might Texas
Cruise-In X Veteran
St. Jude Donor '09-'11
Re: EGR (Gerry)
The valve should be down (closed) at idle, rev the engine a little and the diaphram will go up. This only works once the engine is warm since the vacuum source is connected to a thermal switch.
Melting Slicks
Joined: Nov 2000
Posts: 2,663
Likes: 3
From: Palm Harbor FL
Re: EGR (Neo Fender)
Actually, the gas buildup in the valve covers and crankcase is reintroduced through the PCV. EGR takes the gas directly from the exhaust in the head and reintroduces it to the carb. PVC ventilates the crankcase. EGR makes the engine burn cooler.
