I have a 1982 22r with 161,000 miles. It came from a bad home and I am trying to straighten everything on it. I have two issues that I can not quite get. This thread will be for the fuel consumption. I have given the pickup a tune-up and not much happened. Rough idle, terrible mileage with stock sized tires, super rich nasty exhaust. So new alternator, new carb, and now better response, faster speed, same fuel mileage and nasty exhaust at regular speed and idle. I am not hot rodding this thing. The idle is still terrible at the start, but after getting to temperature it does idle ok, not great. My plugs are hershey brown which should be good. I need help figuring what is the deal and improve my mpg. Thanks,
keep your powder dry and stay out of the overflow

 

continuation

After running hard, when I shut it off, it shutters, sputters and finally dies. Not always, but it never did it until I put on the new carb. Running hard means running through snow or running down the hwy at 65 for 60 mins.

 

what carb did you put on? Sputtering sounds like tuning issues still. My 83 4x4 with 4.88 gears lockers and 32" tires was getting 18-19 MPG in town and up to about 25 on the highway, thats with an Empi 32/36, Webber knock off carb

 

sounds like u neeed to adjust your carb baddd or ignition issues

 

I put in a new rebuilt carb. Oem. What is with weber carbs? Mine comes with a lifetime warranty. How about timing being the issue?

 

Ignition timing certainly could be. I believe stock is 8 degrees BTDC, I run mine on regular gas with a bigger cam @ 10-15 degrees BTDC. Adjust your initial timing to get maximum advance w/o pinging. Make sure to tune your engine on the fuel you regularly run.

The deal with Weber's is that they are under-complicated, simple, reliable carbs that offer ample drive-ability and tune-ability over the stock units. I once bought a reman warranted stock carb and quickly chucked it in favor of the much much improved Weber. Some people don't like them, why I don't know. I have heard the 22R carb is better than the 20R, but I don't have a 22. The Weber is a great carb.

 

As far as the sputter and die at the end, I assume you hooked up the fuel cutoff solenoid for the carb.

 

my bone stock 20r gets 22 mpg city. but i also use some very basic hyper-mileing tricks.