My only issue I am having is the IAC valve. The setup I have is a built Mark Motor with a 98 Mark intake.
Now at startup I had noticed a very large air leak. The engine would start but die. I fixed the accel to barely stay open so the engine would run. I traced the leak to the IAC. Not from the gasket but from the metal cap on top. So I changed it out with my 2v one, running a hose from the iac to the intake tube. With a turn or the key the engine fires and idles smooth as silk.
I went out and got another IAC for a Mark and still the same leak but it did idle at about 450rpm. I'm at a loss at this, I'm wondering if a restictor would work. Is there anyone that has did this swap have any info. Photos would be nice.