fast idle speed
05-26-2014, 05:22 PM
#1
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fast idle speed I just put a new 750cfm holley on my caprice. I have the curve 1 pill in my msd box. The problem I'm having is that no matter how I adjust the carb the fast idle never drops. Can I adjust the idle with a laptop thru the msd. I haven't checked for a vacuum leak, but it doesn't stumble during acceleration and the idle while it's in gear is fine. Any help is greatly appreciated, thank you.
05-26-2014, 06:53 PM
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Performer RPM. I do have the hole your talking about plugged. I have the passenger side valve cover running to the carb and the PCV tee'd into my brake booster and going to the back of the carb. The 2 smaller vacuum ports on the carb are plugged as well as the port on the intake below the carb.
05-27-2014, 11:21 PM
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if electric choke check voltage & wiring for it. or adjust out the choke so plate is open all the way(vertical) and check fast idle screw too might just need adjusting so it'll kickdown.
#1 curve pill has 20* @1000rpm... I'm stick and run 10* @ idle. I hope you have a programmable box one from msd, not the one that comes with the edelbrock kit. And check your map graph set it to 0
#1 curve pill has 20* @1000rpm... I'm stick and run 10* @ idle. I hope you have a programmable box one from msd, not the one that comes with the edelbrock kit. And check your map graph set it to 0
07-13-2014, 05:18 PM
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if electric choke check voltage & wiring for it. or adjust out the choke so plate is open all the way(vertical) and check fast idle screw too might just need adjusting so it'll kickdown.
#1 curve pill has 20* @1000rpm... I'm stick and run 10* @ idle. I hope you have a programmable box one from msd, not the one that comes with the edelbrock kit. And check your map graph set it to 0
#1 curve pill has 20* @1000rpm... I'm stick and run 10* @ idle. I hope you have a programmable box one from msd, not the one that comes with the edelbrock kit. And check your map graph set it to 0
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07-14-2014, 07:40 AM
#8
Is your carb a vacuum secondary or a mechanical secondary. If it is a mech secondary some carbs has a idle adjustment on the secondary also that has to be adjusted. I have scratched my head many time over the simple things.
07-14-2014, 09:46 AM
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It a vacuum secondary. I know the feeling and on top of that my time in the garage has been limited lately. I have the secondaries plugged off. Should I run a line to the port under the carb?
07-14-2014, 04:01 PM
#10
I have saw people pull the choke flap and leave the linkages on the PS. If any of that stuff opens or moves from full open it will make your throttle not return all the way to idle position.
