Vacuum diagram for 4A-F engine

https://www.justanswer.com/chevy/2d0ak-vacuum-routing-diagram-1993-chevy-k1500.html

Google Toyota Corolla 1987 for a engine vacuum hose schematic

http://www.thefotoartist.com/1987-toyota-pickup-22r-vacuum-hose-diagram.html


there you go. hope it helps with your issues. Toyota used the same engine in cars and trucks so it is the same diagram for both.

I’m happy to help further over the phone at https://www.6ya.com/expert/dennis_7c5f8bf265aab5e9

If you lost a vacuum line then the heater would let hot air out the vents with or without the fan motor running. Do this test with the engine up to operating temperature Touch both hoses with the heater on and temp control to the hottest position. Now check the temperature of both hoses. They should be the same. If not that indicates a blockage of water to the heater core. Test the water flow valve too. It can be plugged with rust or not moving to let water into the core. The core itself can be plugged too. If you really need a hose diagram, a Chilton's manual will be your source of information. The engine won't idle well with a vacuum hose off.

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Matthew, I assume you have replaced the missing carb with a new one, is it an OEM original? or an after market? It matters what carb you put on because of smog laws and whether or not the carb you bought is smog legal for your truck, if it is not the exact same as the factory original then there wont be a correct vacuum line schematic. If when you do have the correct replacement carb then type in (1985 ford ranger, v6 2.8l vacuum line diagram) in to your google search engine, search under " images" there you will find lots of diagrams of vacuum line routing. If you are not able to do any of this then take the truck to a qualified service tech, there are also mobile service mechanics that can help, good luck to you sir. One final note, you can plug each of the vacuum outlets on the carburetor with the appropriate size vacuum caps, this will allow you to start the engine and make minor adjustments, then you can drive the truck to a qualified tech

I don't have a diagram but I think the replacement carburetor may have come off an engine that had a governor which was activated by a plunger under the distributor plate. The vacuum lines went between the carburetor and distributor. Check to see if there is vacuum at one of the lines when the engine is runnuing. If there is just plug it off. A vacuum leak could be causing your idle problem.

If you go to AutoZone.com and register (free) you can nagivate your way to the "repair info" section. Once there look at the list in the center of the page and click on "emission controls:, after that look on the left side of the page for "VACUUM DIAGRAMS". the proper vacuum diagram should be there for your truck.

vacuum lines hoses nothooked up right need diagram or schematic