Setting Idle
Thread Starter
|
Elder User
Joined: Dec 2015
Posts: 816
Likes: 0
Setting Idle
Now that I have everything installed I need to set idle on the carb. What are my steps here?
1986 Ford Bronco with '79 LTD II 8 cylinder 302 engine. Edelbrock Performer 500 cfm electric choke carburetor with Edelbrock performer 2121 intake manifold.
1986 Ford Bronco with '79 LTD II 8 cylinder 302 engine. Edelbrock Performer 500 cfm electric choke carburetor with Edelbrock performer 2121 intake manifold.
pedant
Joined: Jan 2008
Posts: 23,576
Likes: 40
From: EXTREME southwest CT
What is the idle speed stated on the compliance sticker on the radiator support?
Automatic is usually in gear.
Manual in neutral.
Set the parking brake and chock the wheels.
I used to do automatics up against a concrete retaining wall.
Fully warm up the engine (like a 20 minute drive)
Remove the air cleaner and adjust the throttle stop.
If you really want to get into it, you would then adjust idle mixture for highest vacuum and then reset curb idle.
Back and forth until it wouldn't change, and then open the screws 1/8 turn and confirm the speed again.
Automatic is usually in gear.
Manual in neutral.
Set the parking brake and chock the wheels.
I used to do automatics up against a concrete retaining wall.
Fully warm up the engine (like a 20 minute drive)
Remove the air cleaner and adjust the throttle stop.
If you really want to get into it, you would then adjust idle mixture for highest vacuum and then reset curb idle.
Back and forth until it wouldn't change, and then open the screws 1/8 turn and confirm the speed again.
Thread Starter
|
Elder User
Joined: Dec 2015
Posts: 816
Likes: 0
I turned the mixture screws one at a time watching the RPM's (which fluctuate by about 15-20 at idle) and periodically adjusting idle speed and when it hit max RPM before going back down I stopped and did the other screw the same way. When it was at max RPM I then screwed them back flush counting the turns and backing them back out the same amount. They are backed out 2 5/8 turns out. Is that about right?
Do not know if this has anything to do with it, but the cam was replaced by previous owner and I found the receipt today. I will get back on what size and brand it is.
Do not know if this has anything to do with it, but the cam was replaced by previous owner and I found the receipt today. I will get back on what size and brand it is.
Thread
Thread Starter
Forum
Replies
Last Post
thedopefishlives
335 Series- 5.8/351M, 6.6/400, 351 Cleveland
1
Mar 17, 2017 05:31 PM
bluesky636
FE & FT Big Block V8 (332, 352, 360, 390, 406, 410, 427, 428)
2
Aug 24, 2004 10:52 PM
