Moparnocar
Well-Known Member
Mild 440, 284/484 cam, new Edelbrock performer 650 and intake
Originally, it idled pretty rough 6-8 inches of vac at idle. Put in 3" metering springs and it improved, but still doesn't seem right, new plugs, wires, etc.
Went to adjust idle screws, and made no difference. Screwed them down, and it kept running. Off fast idle, probably around 700 rpm. As we were looking at idle, idle INCRESED probably close to 70-100 rpm. It was noticable.
It does not appear to be running off the main jets, I can see any fuel on the blades any way. Fuel pressure 5.5-6.5, bounces a bit. Went to change fuel filter, and alot of rust came out the intake side. Plugs are a little dark, but it was idling rich for awhile
Any ideas on the increasing idle, mixture screws?
Thanks
Originally, it idled pretty rough 6-8 inches of vac at idle. Put in 3" metering springs and it improved, but still doesn't seem right, new plugs, wires, etc.
Went to adjust idle screws, and made no difference. Screwed them down, and it kept running. Off fast idle, probably around 700 rpm. As we were looking at idle, idle INCRESED probably close to 70-100 rpm. It was noticable.
It does not appear to be running off the main jets, I can see any fuel on the blades any way. Fuel pressure 5.5-6.5, bounces a bit. Went to change fuel filter, and alot of rust came out the intake side. Plugs are a little dark, but it was idling rich for awhile
Any ideas on the increasing idle, mixture screws?
Thanks