Hey all. Just a couple of months ago I recently picked up a cheap $900 '86 turbo bird and tried to get the smog done. Before I gave it a run I changed oil, plugs, drained fuel and ran fresh stuff, retarded timing to 10*, and checked the tires for proper inflation then gave it a go.
The car failed by a miserable 10 ppm with the carbon in the 15 mph zone.
I took it home and tried to think of what I might have missed. With a free gift card from work I purchased a new MSD coil, 8.5 plug wires, ran the entire tank on GTP, and installed a new O2 sensor. I'm also thinking of going on a colder day to get the fuel to burn hotter.
Everything with the smog system is complete and some parts like the EGR and exhaust system are less then a couple years old. The car does have 340,000+ miles on it so I'm wondering if oil blowby or low compression might be a part of it. One thing I didn't think would be an issue (but who knows it could be) is that the turbo wastegate actuator diaphram is blown so it doesn't open. I'd figure I can fix that later once it's on the road.
Any input guys?
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