Senior Tech Team
LSx Swap Guru
Join Date: Sep 2001
Location: Bakersfield, Ca.
Re: Hard starts with Edelbrock Carb
I just installed a 1406 tonight on my K5 (350) and I have to hold the pedal to the floor to get it started. It doesn't matter if it is cold or warmed up. After it is running the engine idles smooth as glass. If I turn it off, even for a second, I have to hold the pedal to the floor a crank on the starter for a few seconds before it will start.
When it was running at idle I had to set the mixture screws to 1.5 turns from the seat to get max vacuum of 16". Off idle throttle response is great, runs like a champ when running.
I had a Q-Jet on it and it ran fine except I need an electric choke because my wife can't keep it running for anything when cold. I'll buy another Q-Jet in the future, but in the meantime I need to fix this thing ASAP.
Could the electric choke or linkage cause any problems like these? Ideas?
-'74 K5 2wd Blazer 'Ghost': 6.0 LQ4/4L80e Swap, BW S474 T6 Turbo, Custom Turbo Cam, 690/600 rwhp/tq
-'06 Silverado 2500HD 4x4, LBZ, Daily-Driver/Tow Rig
-'70 Chevelle Wagon (Basketcase LSx Swap Project Car)
-'75 Monza: Factory 350/350 Car, 5.3 LS/Turbo Swap
Last edited by Cable; Sep 5th, 07 at 3:04 AM.