6 years after the install and the beast finally let me down. Started having all kinds of weird idling/running problems. Tracked it down to a bad fuel injector. $51 for the injector (Standard Motor Products #339 TJ14T) and a bit of fussing about with the tuning later it's back on the road. Didn't need to adjust the tuning but I did it anyway 'cause I could!

I believe this was the original injector from the initial TBI set-up. It wasn't the original Delco part but I have no idea when it was previously replaced. The TBI unit was from a 1990 Astrovan with well over 300,000 miles on the odometer. I'm sure of the mileage because it was my old sales van and it got its wheels run off it.

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“Whatever story you're telling, it will be more interesting if, at the end you add, "and then everything burst into flames.”
― Brian P. Cleary, You Oughta Know By Now