B18a1 running way to rich

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Efjunkie125

New Member
Have a b18a1 swap in my 91 dx. I did the swap myself and everything went fine except for the fact that I get absolutely horrible gas mileage. I did have someone help me with vacuum setup and I realized yesterday the vacuum hose going to the map was unplugged, I plug it up and my car idles around 2500 rpm. I unplug it and it idled fine. Is this why I'm running rich? Or something else entirely
 
ALSO be sure you didn't cross the two distributor wires, they can severly retard the timing and you will *think* its running rich when really the timing is too far off to have a complete burn. Food for thought.
 
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