View Full Version : carb help

04-17-2009, 08:54 PM
I have a chev 2.8L v6 that i have made a custom riser to be able to bolt on a 350 holly 2 barrel carb onto. it works and runs but needs to be tuned for the engine so it will idle right and not stall out. anyone able help me out getting it tuned

04-18-2009, 12:26 AM
going to have to set the idle mixture first, probably lean it out a lot to make it idle. Start turning them out 1/2 turn at a time until the idle stops increasing then turn back in 1/4 turn. Won't pass Aircare, but will idle nicely. Also make sure you set your timing after getting it to idle.

If it doesn't want to clear up with the mixture screws, I suspect you have a vacuum leak, check with either propane or carb cleaner spraying around base gaskets, intake gaskets, etc. It will run smoother when you find the leak.

Good luck! :D