i have my 350 olds engine in my 86 cutlass supreme and i had a edelbrock carb on it, it ran great and everything but if you got the engine warm and shut it off for say maybe 10 mins, you come back out and the engine is flooded. i rebuilt the carb thinking that was the problem but after i put it back on the car it did the same thing. anyone else have this problem and a fix for it? ive heard that with these carbs you should put a spacer between the carb and the intake. that if you didnt the carb was getting it to hot for the fuel or something.
Thanks.

 

I suppose if your engine is running hot it could cause the fuel in the bowl to percolate onto the intake manifold when the car is sitting. I would look into this deeper, perhaps your Olds is running too hot.

I know Oldsmobiles sometimes have trouble with heat soak in the starter, especially if you run headers. I had to put a thermal blanket on my starter so the car would start after sitting for 10 minutes like that.

 

i know it is running too hot and i dont even have a thermostat in my car. my driver side bank is hotter then the passenger side. only reason i know this is because my copper exhaust gasket was red after it is cooled and the passenger side gasket is normal. im not sure what to do to make it run cooler. ive put new head gaskets on it the only thing i have not put on it is a 3 row radiator. and i have a flex fan on my car also

 

I would hook up a mechanical temp gauge and see what your actual engine temp is, then go from there. Also put a 180 degree thermostat in it.

 

i found a 160 degree thermostat for my car on summitracing would that be better? or just go with another 180

 

If you drive your car in the dead of winter, no.

 

Counter-intuitively try a 195* stat. You shouldn't run without a TStat. Yes an insulator base is a good choice, so is blocking off the exhaust cross-over circuit in the intake. Its not needed if your running an electric choke in a summer cruser. This will eliminate boil-off with todays crap gas. Cooler intake=denser gas/air charge=more power & better throttle response.
You say flooded but then you say it starts hard. Have you verified the choke setting and have you "read" the plugs? Reproduce this condition then without starting the engine look down the carb while actuating the accelerator pump. Do you see 2 strong shots of gas? What series is your EBrock carb? Any other drivability problems? Do you own a vacuum gauge? If not get one.

 

I had this problem with an Edelbrock on another make, I added a 1/2" Edelbrock wood composite spacer and it fixed the problem. Other things to check are float level settings and make sure your heat riser valve is not stuck in the closed position.

 

Also, if you do not have a fuel pressure regulator get one, Edelbrocks typically work and run better with 5 - 7 pounds of pressure. I think the factory recommends 6.5 psi.

Sean

 

X2 what Sean says. I had your exact same problem on my 1406 and had 9 psi entering the fuel inlet. Installed a regulator, set to 6psi, and that fixed it.