Smoking is simple. Take the intake tubing off and cap off the throttle body. Unplug the booster hose and put the smoke machine nozzle into then. Then turn on the smoke machine and pump smoke in.
Find a decent independant shop and I bet he'd do it for 10 or 20 bucks quick and then you'll know for sure.
Spraying carb cleaner around all the questionable areas is just a PITA and hard to hear the idle changes.
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