[malarson]

I'm having starting problems with my 69 Mach. It has a 351W and a Holley carb. If I crank the engine (not start) and let off the key, it seems as if the engine "kicks back" and spits gas out the carb. Not good. I'm talking a bunch of gas, I had the hood open and gas was running down the underside of it. It seems like a timing problem, but 90% of the time the car will start fine and it runs perfectly. The carb has an electric choke. The car does this hot or cold. Any ideas?? Oh yeah, I had a Carter carb on it also and it did the same thing.

 

[malarson]

The engine cranks normally. Most of the time it will start right up, but if it doesn't start, that's when I have this problem. As soon as you let off the key it "kicks back" shooting gas 2 ft out of the carb. I rebuilt the engine 10 years ago, but didn't install it in the car until 4 years ago. It is a stock rebuild, nothing fancy. I just can't seem to figure out why the engine kicks back the way it does. And yes, I have a fire extinguisher nearby! I'm wondering if it is an intermittent electrical problem. Maybe I'm not getting juice while cranking, but as soon as I turn the key to run I am, causing it to "kick" the way it is.