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I went out to start my cart this evening, It started up then fouled the plug and died. The carb was also flooding. Yesterday I started it, adjusted the idle/low speed needle, let it warm up,and took off down the road. This was the first time in 25-30 years that the engine had been started. It has all new parts in the carb, The arm that controls the needle is adjusted flush w/ the top of the carb body. Oh yeah...Its a Mc 91b1 with a bdc 14 carb. Any thoughts?
Thanks
Eric

First thought..... yep, it's a McCulloch, nothing unusual

Second thought.... you need to provide more info..... what is the popoff pressure? Where are the jets set? Did the duck bill swell up or is it still the same size as when you installed it? Did you pull the plug to see if it is wet? How did you kill the motor when you ran it the first time? If you choked it to shut it off you may have flooded the motor with fuel. Will the carb draw fuel when you crank it over? If it pulls fuel up the line when cranking, does it stay there when you stop or does the fuel run back down the line filling the line with air?
Answers to these questions will help in identifying the problem.
Regards,
Steve O'Hara

pop off pressure---dont know
low side ---just past 3/4 turn
high side---just under 1 turn
duck bill is a new elder rubber duck bill (will it swell that quick?)
Plug was wet
Pulled the plug to kill it
Had to cover the throat of the carb to get fuel up the line and to the carb..once it was there it stayed...no air
It also had fuel sitting in the carb throat...Plug was soaked
thanks
Eric haynie

also I killed it and started it probley 5 times last night...started right up each time

Do you have spark?
Do you have compression?

Lots of times I have seen these old engines fire right up but then get in a funk. Condenser goes bad, coil didn't like all the attention. Needles are stuck in the wrist pin and come out and tear up a cylinder but you would never know it until you start to dig.......

It has good spark and compression

Same thing happened to me at TBO. Turns out it sucked a reed. These old reeds break really easy and the engine runs really bad with broken reeds.

Oh yeah, that was after we swapped out the bad coil...

Ahhh... the joys of vintage karting!

Reeds are okay...
I took carb apart blew everything out ,reassembled, started it, It ran for maybe 10 seconds and flooded out.
Eric