Hey y'all. New problem for me over here with my 83 pickup with a 22r. My vacuum advance was faulty and not advancing at all even though there was vacuum on the line. I got a new distributor from rock auto and installed it per the instructions on this video
I plugged the lines to my vacuum advance and set it to 5 degrees like the manual said. The problem I'm having is that when i reconnect my vacuum advance the timing advances way more than it should. My understanding is that when i reconnect the lines to the vacuum advance my timing should be at about 12 degrees. Mine advances to past the marks on the crank, probably to about 20 degrees if i had to guess. Hopefully I'm overlooking something obvious! thanks advance for the help.

 

Vacuum advance cans are very specific to year, model, carb/efi, california emissions, federal emissions, transmission, gearing, ect. Most aftermarket distributors use a generic advance can which can cause problems. Toyota has pretty much obsoleted them and what is available cost an arm and leg.

Was the original vacuum advance can a dual diaphragm or single port? What is the new one?

 

thanks for getting back, the original was a dual diaphragm that was replaced due to a faulty pick up coil. The new one as well as the one i replaced with the faulty vacuum advance is a cardone 84731 dual diaphragm https://www.rockauto.com/en/moreinfo...=4364529&jsn=3.

 

I am also wondering if i may have installed my distributor off by a tooth. I installed it with the rotor facing up and it turned to the number 1 spot on the cap like it should. I'm thinking i'll pull it tomorrow and reinstall it to be sure. once I'm at tdc of the first cylinder's compression stroke is there a way to insure that it is aligned correctly? I'm seeing some sources say to center the bolt hole on the mounting slot on the distributor while others suggest lining it up with the top of the slot

 

Pick-up coils are cheap and readily available. You may just want to replace it, adjust it (you'll need a brass feeler gauge) and stab the original dist back in if all else fails.
I don't believe you would be able to properly set ignition timing with the distributor off a tooth. Be sure to adjust your idle below 900 RPMs and pull and plug the vacuum hose that has manifold vacuum.

 

SOLVED: Hey y'all wanted to update for the record in case someone else searches this problem. I swapped the distributor out for a used Spectra TY47 since that was the type it had when i bought the truck for a whopping $600 back in 2018. Now it seems to advance to just past the first unmarked timing mark with the vacuum advance lines connected (im at 5 degrees with them plugged.) My understanding is that the second unmarked notch is 12 degrees so i guess I'm advancing to like 11 degrees or so but still much better!

I'd advise anyone with an 83 California 22r to avoid the Cardone 84731 distributor since it advances too much! I'm not sure why rock auto lists it as being for my truck. Frankly I'd advise anyone from buying one because the first one I got the vacuum advance was loose and didn't work. Thanks for the help y'all.

 

I have an '82 22R out of a motorhome installed in my '86 pickup that's been running great until carb problems addressed in another thread.
A few days ago I successfully adjusted the timing to the '82 specs with both vacuum advance lines plugged. One of those lines, the one closest to the engine, seems to not affect anything. Is this normal?
Today, after working endless hours on the carburetion, I checked the timing again and it was so far off I almost couldn't see the mark. Pulling the distributor back as far as I could wouldn't bring the mark past TDC much less back to the 8 degrees BTDC. Do I need to reinstall the distributor? Is it possible for it to jump off a tooth? Am I on the right thought process?

 

Watching the distributor video above, he's setting the timing mark at zero degrees. Is this setting the same on all 22R's when R&R distributors?