I'm new here, and new to Nissan....So far in the past six months I've enjoyed both pretty well though, y'all have answered many questions without me having to post anything - great database of knowledge here!
I have a Z24 I just put a Weber 32/36 on as the stocker was pretty unhappy and I didn't want to bother rebuilding it. The truck runs SO much better and has multitudes more power but it's pretty sputtery on startup when it's cold out. A 'lope' I suppose it could be called and it smells very rich. I pulled the air cleaner and it looked like the choke was closed completely. I opened the choke butterfly a little with my finger and it speeds the idle up and runs smooth but closes back up and lopes afterward.
What voltage should be going through the electronic choke wire and when? Is it variable or just a constant 12 when the engine is running? The blue wire with red stripes is hooked to the choke currently as that was the one hooked up to the stock carb but the choke on that one was broken and I'm not sure if it was a wiring issue then too or what.
Just more explanation, maybe this is all working correctly - When the truck is off after running and being warm the choke valves are held open slightly. When I lightly push the throttle linkage they close fully and return to closed whenever the linkage rests back on the idle speed screw. If you open the throttle and keep the choke valve open slightly (maybe mimicking vacuum?) when you return the throttle to closed, the valves are held open slightly. I assume this is all correct....
I'm not sure if this is related but there are two relays in the cab against the inside of the passenger fender, one larger one higher up and a smaller one just below it. A couple days prior to my carb swap the lower relay started buzzing whenever the truck was running so I unhooked it - truck continued to run so I left it that way for the time being. I just checked and there's a blue/red stripe wire running to both of those. I've asked a couple mechanics but they weren't sure off-hand what they were for.
I have two vacuum hoses hooked up - The larger one that goes from the carb to the canister and the vacuum advance line to the distributor - all others plugged.
I'll get a couple pics of her later on and toss em up (separate thread of course)
Thanks in advance!