carb problems 3SF - Toyota Nation Forum : Toyota Car and Truck Forums

Corona Forum Specific discussion of the Toyota Corona

LinkBack Thread Tools Display Modes
post #1 of 2 Old 03-09-2009, 02:59 AM Thread Starter
New TN User
Join Date: Mar 2009
Location: philippines
Posts: 3
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks: 0
Thanked 0 Times in 0 Posts
iTrader Score: 0 reviews
(Thread Starter)
carb problems 3SF

I have a 3SF engine carb type i had just fixed the distributor oil seal and orings and timed the car at 5degs everything was ok idle was at 800 the car had good response with the throtle then i ran it on hi rev aroung 5000 to 6000 then the idle went up to 2000 and did not go down i looked at the timing it was still in 5deg then went i turn of the engine it will choke up for a few seconds then pressure would be released in the carbs. when i started the car again the rpm is still in 2000 / would also like to know how to set the octane dial in the distributor / or a diagram of the carbs / help please / i will post up pics of the engine
millow is offline  
Sponsored Links
post #2 of 2 Old 04-11-2009, 12:51 PM
Official TN Member
Join Date: Apr 2009
Location: Cape Cod
Posts: 385
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 38 Post(s)
Thanks: 2
Thanked 49 Times in 46 Posts
iTrader Score: 0 reviews
Hi, Once the automatic choke warms up and kicks out, the idle adjusting (stop) screw and idle mixture screw control idle speed, If the timing is staying the same. so you might want to adjust the idle (stop) screw to obtain a lower idle and then adjust the idle mixture screw to obtain a smooth idle and then re adjust the idle stop screw to get the idle speed right. On my 1969 Corona it was hard to see the idle stop screw as is down low and under the linkage. The idle mixture screw goes in on an angle in the base body flange. Your timing should change as the engine is reved due to the vacuum and mechanical advance. Normally the octane selector is set in the middle of the 3 rings on it when you time the motor to factory spec with a strobe light and then you can turn it to retard it (CCW) if you hear pinging or spark knock. you will see the timing retard as you hold a strobe timing light and turn the octane selector CCW.
Carl H is offline  
Sponsored Links

  Toyota Nation Forum : Toyota Car and Truck Forums > Toyota Passenger and Sports Car Forums > Corona Forum


User Tag List

Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode

Posting Rules  
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

For the best viewing experience please update your browser to Google Chrome