need pic vacumm diagram for 78 corona - Toyota Nation Forum : Toyota Car and Truck Forums

ddf101 · 09-01-2009, 10:05 AM

need picture of diagram of the vacuum hose that is posted inder the hood. don't have a book yet and car is running rich(black smoke black soot on plugs.) some hose are unhook and dont know where they go. thanks. If I could just get a diagram then it would be a big help thanks. car is running rich.

http://s78.photobucket.com/albums/j9...5/rt105vacuum/

***79Corona*** · 09-02-2009, 09:31 AM

Get yourself a Haynes manual. ebay probably has them. Don't know if local parts store has one for a car that old, but you can check. If the hoses are old, it would be worth replacing them to make sure no cracks or leaks exist. Check the condition of your mixture screw. I assume all your ignition parts are new or in good condition.

ddf101 · 09-02-2009, 11:45 PM

Thanks bryan, replaced the plugs and the capsand rotors. I was able to find a diagram from autozone.com website. They all have the diagrams for all model year toyota. It was very helpfulin someways. Though I wish that they assign name of parts as not all are given their designated abbreviation.

It still runs rich but not as bad as before. the air mixture jet i took out and it was somewhat screwed in to tight adn it left a gouge ring on the tip. need to find where I can get this one. I did sand it down smooth but to a point but it still did not solve it though it runs much better now. Still failed smog check though.

thanks.