| Slant Six Forum https://slantsix.org/forum/ |
|
| curb idle screw wont stall motor https://slantsix.org/forum/viewtopic.php?t=39482 |
Page 1 of 1 |
| Author: | jimmy the C [ Fri Mar 19, 2010 9:56 pm ] |
| Post subject: | curb idle screw wont stall motor |
Hey dudes jimmy here , MR D thanks for the last info, good stuff. My new story is at 3000 RPM i set my timing at 30 right now i can unscrew idle screw out past contact and it wont idle down to get it to work i have to retard the spark to full advance at 22 . And my MPG goes to about 13. AND LASTLY my bbd main jet # is 120 where can i get the 2 steps higher jets curently i have to screw the mixture scwers out 5 full turns out to get it to run smooth vacuum is 22 |
|
| Author: | SlantSixDan [ Sat Mar 20, 2010 7:16 am ] |
| Post subject: | Re: curb idle screw wont stall motor |
Quote: at 3000 RPM i set my timing at 30
Why were you trying to set the timing this way instead of the correct way (at idle)?Quote: i can unscrew idle screw out past contact and it wont idle down
That probably means you've got internal carburetor problems -- a sloppy throttle shaft, for example, and/or throttle plates not correctly installed on the throttle shaft. What do you know about the history of this carburetor?Quote: my bbd main jet # is 120
All Carter jets start with the number 120. The three digits after the 120 are the jet number.Quote: where can i get the 2 steps higher jets
You already said your mileage is poor...you want to add more gas? Why? What makes you think your running issues are jet-related?
|
|
| Author: | jimmy the C [ Sat Mar 20, 2010 9:17 pm ] |
| Post subject: | |
well dan on the timing issue all the articals i read say to go for total advance thats whats important right, and the carb issue was the bottom of the carb was warprd to much for the gasket i blocked sanded it flat, now it is smoother but still idles to fast at 30 total lastly jet size if i upsize my jet taller i should be able to screw my mix screws in to about 1/2 or 2 turns out maybe the rest of the carb will follow so the flow transisions properly |
|
| Author: | jimmy the C [ Sat Mar 20, 2010 9:19 pm ] |
| Post subject: | |
By the way what is the standard jet size for carter BBD on slant six |
|
| Author: | SlantSixDan [ Sat Mar 20, 2010 10:32 pm ] |
| Post subject: | |
Quote: well dan on the timing issue all the articals i read say to go for total advance thats whats important right
Total advance is important to the car's highway performance and fuel economy, mostly; the total-advance figures you read about are for use in reworking the distributor, NOT for setting base timing!Quote: if i upsize my jet taller i should be able to screw my mix screws in
No. Main jet size does not affect idle mixture.Carburetor operation and repair manuals and links to training movies and carb repair/modification threads are posted here for free download. |
|
| Page 1 of 1 | All times are UTC-08:00 |
| Powered by phpBB® Forum Software © phpBB Limited https://www.phpbb.com/ |
|