how's your idle set? sometimes you can have run-on if it's too high. incorrect timing (retarded) can do it, too.
there the AAP diaphragm that can cause starting problems, as I understand. part of the $30 carb rebuild kit, I think.
on my first Toyota truck, the carb was a mess. difficult to start, and ran like dookie. it was the first one I ever rebuilt. it wasn't too difficult; I did it over a weekend. disassembled on Saturday, soaked the three parts of the carb body, reassembled on Sunday, ALTHOUGH, I should have soaked each part of the carb body overnight for better cleaning; that would have meant three nights. anyway, it ran much better afterward. better throttle response, easy starting. not sure exactly what the problem(s) was(were). I think I spent like $60 on materials/tools:
- a mini pliers set from Sears; $30 (I'd prob go Harbor Freight now; $10)
![[Linked Image]](http://www.harborfreight.com/media/catalog/product/cache/1/thumbnail/370x370/9df78eab33525d08d6e5fb8d27136e95/i/m/image_5182.jpg)
- can of parts soak; ~$15, iirc? [EDIT: now ~$25] (it comes in a paint can w/a small metal basket inside)
![[Linked Image]](http://gunk.com/product_images/LG_CC3K.JPG)
- high tack sealant; it's fuel resistant (I didn't have this then, but I'd definitely use it now. vacuum leaks are the enemy of a smooth idle)
![[Linked Image]](http://images.grainger.com/B316_34/images/products/450x450/Gasket-Sealant-3DPR2_AS01.JPG)
TIPS:
1. take photos of the throttle & choke linkage on the side of the carb -- I didn't, and couldn't, for the life of me, figure out how to get it back together. it's tricky. I ended up installing a manual choke (this was before the forums were around).
2. consider buying a new heater spacer(? I think that's what it's called?) for installing between the carb base & manifold. the one you have will have gaskets bonded to it, and it's a pain to get them off without cutting/scoring the spacer. I think they're only $18 new from Toyota.
3. use the high tack sealant on all the gaskets. do not use RTV; it doesn't stand up to the fuel.