vented opti question/rough idle
Thread Starter
On The Tree
Joined: May 2009
Posts: 161
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From: Haslet, TX (north Fort Worth)
vented opti question/rough idle ever since installing my vented opti...i have left the vacuum line unhooked. being that the vacuum port that the opti usually plugs into was being used on my EGR solenoid. recently i replaced my intake gasket seal and since i put on headers, i havnt had the EGR hooked up...i capped off the egr solenoids, egr valve, and the port on the manifold that used to go to the egr solenoid...i got my opti a little wet when i did the intake swap but being that it is vented and the fact that it was 104 degrees that day..i didnt think it would be a problem...now the car idles rough but smoothes out after 1000 or so rpm
i have two questions.....a) should the opti vacuum line be plugged into the vacuum port on the manifold that the EGR solenoid was originally hooked to (middle of driver side of intake)?...what does this vacuum do for the opti?
second question is....what could be causing this rough idel? it acts like a vacuum leak, but i cant find anywhere unless i have a manifold bolt causing a leak...
i have two questions.....a) should the opti vacuum line be plugged into the vacuum port on the manifold that the EGR solenoid was originally hooked to (middle of driver side of intake)?...what does this vacuum do for the opti?
second question is....what could be causing this rough idel? it acts like a vacuum leak, but i cant find anywhere unless i have a manifold bolt causing a leak...
Thread Starter
On The Tree
Joined: May 2009
Posts: 161
Likes: 0
From: Haslet, TX (north Fort Worth)
i also thought about dumping some seafoam in the tank ...just for good measure on the injectors
Your vacuum line should have a one-way valve in it to prevent any moisture getting into the opti. It will allow the vacuum to suck moisture out, but not let any air in.
If not, go down to your local auto parts and get one, they are inexpensive.
If not, go down to your local auto parts and get one, they are inexpensive.
The opti vacuum line needs to be hooked up to the intake elbow.
I would check and see if your EGR valve is working correctly .
Push in the diaphragm and hold your finger over the nipple were the vacuum line goes. if it release and takes in air while you have your finger on the nipple it bad.
I would check and see if your EGR valve is working correctly .
Push in the diaphragm and hold your finger over the nipple were the vacuum line goes. if it release and takes in air while you have your finger on the nipple it bad.
