Topic: Message #1131106

[pleasetellmeno]

Hey kaalsb,

It sounds like it could be the AAP.  As I remember you can carefully remove it with 3 screws. It’s a little tricky to get to. It has a rubber diaphragm that fails because it gets a hole in it and allows excess fuel into the mixture.

http://www.offroadforum.cz/toyota/aarc.epnet.com/application/8578/8578R04_Auxiliary_Acceleration_Pump__AAP.html

https://www.google.com/search?q=22r+carb+rebuild+kit&rlz=1C1AOHY_enUS708US708&source=lnms&tbm=isch&sa=X&ved=0ahUKEwjd-_fJs4LQAhXogVQKHc7aDUAQ_AUICSgC&biw=1024&bih=633#tbm=isch&q=22r+carb+AAP&imgrc=vKa1UZ8O_QZq_M%3A


Check the vacuum hose as well.

http://www.autozone.com/repairguides/Toyota-Pick-ups-Land-Cruiser-4Runner-1989-1996/EMISSION-CONTROLS/Auxiliary-Acceleration-Pump-AAP-System/_/P-0900c15280060d7f

Have you physically checked the float level?

Gnarls.

Thanks for the reply Gnarls. i haven't physically checked the float level, just peeked at it through the wee sight glass. i will source a new AAP diaphragm and pop it in and report back.