So, new motor in the old 320i, Weber 32/36 sitting on it, 284 cam. I can't get it running to save my life. It sounds like it wants to go, but does not continue running.
Electronic ignition (from factory - it's an 83), and set per spec (rotor lines up with notch in distributor body when installed at TDC).
Per online Weber manual, mixture screw is 2 turns out, idle screw is 1-1/2 turns (in).
Have tried mixture screw at 2-1/2 turns out and 3 turns out.
Spits fuel back out carb. Usually that's lean, right? Spits more with screw further out. Not sure the deal there, thought "out" on the mixture screw was enrichening.....
Not sure of initial timing, not sure how to gauge without a timing light....
Worst part, I actually had it idling a couple weeks ago, but obviously screwed something up.
Help, oh great and powerful GRM'rs.
Edit: Bonehead move of the day: Need to be sure the "ball" on the flywheel is visible in the inspection hole when installing the distributor (gets timing pretty close).
Car is now running.....
Yeah, backfiring through the carb is from my experience caused by badly retarded timing, not a lean condition.
Yeah, Ign timing is no bueno.
My time with that carb on the MG, No amount of tuning the mixture knob would make it spit fuel. its more of a fuel fine tuner then anything.
And yes, turning it out increases fuel via the idle circuit.
Unrelated question- Does yours have a accel pump squirter for both throats or just the 32mm one?
BobOfTheFuture wrote:
Yeah, Ign timing is no bueno.
My time with that carb on the MG, No amount of tuning the mixture knob would make it spit fuel. its more of a fuel fine tuner then anything.
And yes, turning it out increases fuel via the idle circuit.
Unrelated question- Does yours have a accel pump squirter for both throats or just the 32mm one?
I'd have to go look - I was out of town all day today.... I want to say just the 32, but I'll find out.
RossD
SuperDork
2/23/12 7:21 a.m.
Here are a couple links about setting up your carb:
http://www.piercemanifolds.com/category_s/317.htm
http://www.piercemanifolds.com/category_s/313.htm
They may or may not be helpful.