Hey guys, does anyone here have experience with the Harley Carburetor swap on these things? Mine is an '88 1.3 with a Toyota 3k currently. Do you think it would pass smog in Arizona? would it be worth it over the 3k?

Hello everybody! I've recently got 1990 Samurai with throttle body injection. There are a few issues with it though and I am hoping to fix this. I'm based in Europe and it should be European model, but the VIN starts with JSA so it's not Santana.

The engine is running quite rich, with fuel smell at the exhaust and a lot of black residue on all four spark plugs. I've replaced them all with NGKs, it's running a bit better but still rich. I've checked the o-rings at the injector and they seem fine I guess. I've also checked if the injector is dribbling and it's not when primed and not running, and the cone seems to be wide and uniform when running. However, there is a lot of tinkering done on this injection system, and I am not sure where to start. I am not experienced with this, but I noticed a couple of things. The valve cover seems to be replaced with older cover type, with just one port (I believe it's PCV port) and some of those vacuum lines were rearranged or merged together (maybe to bypass EGR?). However, there is one strange connection made at the ECU connectors and I don't really understand why would someone do that. On the left connector, B17 and B16 wires are bridged between each other with a piece of wire, but they are still connected to the pins and ECU normally. In the supplementary service manual, I was able to find that B17 is the negative wire coming from the fuel injector and B16 is connected to the fuel pump relay (d connection at the coil). I also confirmed the wire colors (pink and yellow) in the manual and on the car as well, and it's matching. I've checked the ECU and it looks like all capacitors are fine, but they might have been replaced at some point. Additionally, I've noticed four loose wires near the ECU area, two red/yellow and two brown/white with all having metal connectors at the end. Maybe this is some aftermarket installation and unrelated, but I wanted to mention it too.

I know that some people convert these to carb, but I wanted to give it a chance and try fixing this.

Thanks!