When I start my car for the first time of the day the engine runs great. Also the brake booster was disconnected from the vac port behind the carb and the engine ran good with the port open. I reconnected the port. My problem is when after I shut the engine off and wait a couple of minutes it won't start. And when it finally starts it runs very rough and I have to keep the rpms up to keep it running. The carb is a Holley 4160 750 cfm electric choke and vacuum secondaries. The engine is a 383 stroker with a mild cam. I bought the carb new from advance auto. Please help. Thanks.
Running good when cold and w/a vacuum port disconnected indicates a too rich condition. View your plugs to confirm this. If plugs are black, check the carb float level, idle mixture and idle speed adjustment.
69 X-44 base coupe, ZZ4, 16lb nodular flywheel, Center force DF clutch + PP, Holley 600DP, Hooker super comp 1 3/4 ceramics, 2.5" dual exhaust w/ X-pipe, flowmaster 40 series mufflers.
The idle mixture screws were way out so I turned them in and turned them out 1.5 times. The float adjustment screws are flush with the securing nut and bowl. The idle screw is good. And the plugs are black but not caked.
The plugs were bad. I changed them all and the engine runs good. But blue smoke comes out of the exhaust. I know blue smoke is oil. The engine was rebuild back in 1998 and driven for about 10k miles. After that it was on an engine stand for about a year and a half, plugs were still in it as with the oil. (I changed the oil and plugs before installing it into the Camaro). What would cause the blue smoke? Would start, run not drive, off, cause the blue smoke? When I started the engine for the first time after I put it in my Camaro it didn't smoke. Thanks for the help.
I think blue smoke is normally running very very rich. Do you have a vacume gauge to tune the carb. You'll have to get it right one of these days so you'll need one anyways.
I hope you aren't burning a lot of oil.
No, black smoke is a rich condition. I started the engine today and poured water into the carb while running around 3000 rpm. Most of the smoke went away. There is still a little, but I think that will go away when I start to drive the car everyday, to really burn everything off. Thanks for the help.