Tuning A Carburetor the Easy Way (on the cheap) 

Hell yeah brother.. thanks for the video. I’m working on my first carbureted engine so this is food for the brain.

This kid is a genius

Thanks for putting Bob2000 link in there for Gerard Forgnone's info!

I've done this before on a mazda truck that I put a weber on. It worked perfectly

Good video I learned something thanks

Thank you very much i will try it

Just an idea, use a simple Narrowband 02 sensor (Wideband sensors have a heating element that is controlled by the ECU) and add it into your EFI setup. Find a Narrowband 02 sensor (Narrowband sensors generally have one or two wires). I would put the sensor close to the engine exhaust port so it gets hot and stays hot. For a VW engine, I would use the #3 exhaust because that cylinder usually will run slightly hotter (more lean) than the other cylinders. The readings you should get once the sensor has heated up will be from 100 mv volts up to 1.1 volts. The high readings are rich, the low readings are lean. I have found my car to run well at about 600-800 mv. Sorry, the code work is on you (my Arduino skills are no match to yours). I use a Narrowband 02 sensor on my little buggy (1968 VW bug with a Manx style body) and a simple voltmeter to easily tune the carburetor.

good thinking

My car is running pretty lean, and heavy on the pedal in 3rd gear can hear pinging and I see no smoke as well. Also down on power too. Hopefully, a simple Narrowband 02 sensor will help.

Well, I didnt know that. Very helpfull.

Bravo

Pretty nifty idea it's the same way EFI computer works it interprets the voltage

This is what i wanted to do but i couldn't find any information on it before i got a handheld o2 meter.

Man that looks like the perfect R&D vehicle. If you really screw it up who cares!

is your multimeter set on dcv or acv?

So, if i get this right, you just plugged your voltage meter right into the connector of the O2 sensor? No need to give the sensor an running voltage?

Good info. What if i have 4 wire sensor? Can i ignore the other 3 wires or there is different way to work with this sensors?

If I have an old VW with the exhaust less than a foot from the engine, could I stick this up one of the tail pipes? Would that be accurate or work?

Could you use a digital voltage gauge mounted onto the dash?

Better to use a Pyrometer which is costlier which gives you a temperature reading on the exhaust. The Pyrometer should be mounted as close to the exhaust outlet from both manifolds so that exhaust will heat the element. The sensor uses a two-wire cable to the meter which will show in Fahrenheit what the exhaust temperature is running. This is old school used on the 70s and erlier diesel engines that use Turbochargers to prevent engine damage under hard load conditions. On some diesel engines under high load and acceleration the Pyrometer can rise faster than the tachometer. Thanks for the video.

go for a 3 or better still 4 wire sensor. guaranteed grounding and powered heating element for more accuracy

what if i have true duel exhaust. Do i need 2 o2 sensors

good, but than you have to know what are you seeeing in the o2 sensor...readings.

This time I'll use inplix instructions to make it by myself.

So for $11.64 shipped to your door, we have a way to monitor your A/F ratio in the vehicle. Forget those $400 kits that do the same thing. Standard Auto SG12 O2 sensor $7.00. Link below www.ebay.com/itm/NEW-STANDARD-MOTOR-PRODUCTS-SMP-O2-OXYGEN-SENSOR-1-WIRE-UNIVERSAL-TYPE-SG12-/171515662959?pt=Motors_Car_Truck_Parts_Accessories&fits=Model%3AStandard&hash=item27ef21526f&vxp=mtr Help 42006 14mm thread size non fouler slash O2 sensor bung $4.64. Link below www.ebay.com/itm/331338662695

Truck looks like a POS not worth doing anything with....