Sunday, January 1, 2012

Edelbrock carburetor do I have to pump it at the start to get a "mist" into the system like other carburetors

My new edelbrock carburetor on a ford thunderbird 390 (1963) doesnt start untill ive spun it over for 30 seconds, can I pump it, should i pump it like my previous Holly that helped make a "mist" to start up. also the plugs are always wet and dont want to fire up at the start.


neil|||all carbs you need to push it to the floor once to set the choke and a couple more times after the initial turnover to get the spray of gas into the carb as the fuel pump has to turn with the engine to get the gas flowing to it and then deliver it to the carb, I don't know if you got the electric choke with yours or got the carb with a manual choke but the electric choke one is much easier to operate.|||Usually, pumping the pedal halfway to the floor will set the choke and squirt a small amount of gas into the carb throats to enable starting easier when cold. If the plugs are really wet with gas when starting, you've got too much fuel being let into the engine and have other problems.|||Check that the choke is not to tight. Also I had one that the needle seat was not shutting down and after I turned off the motor it would leak fuel into the manifold and blow black smoke at startup. The majority of carburetors when set properly need to be pumped at least once maybe twice for a cold start. Some may need to for a hot start also, but that depends on your particular carburetor. With wet plugs sounds like you are getting to much fuel into the cylinders and it may need to clear some out in order to start.|||Yes, on a "cold" engine you should have to push the accelerator once to get it to start on any car with a carburetor. Only fuel-injected engines are designed to start cold without priming. If the engine is "warm" it should start without touching the pedal.





From your description, I would recommend checking the float level. Needle and seat problem is also a possibility. You could check this at the same time. One thing I loved about the old AutoLite 4100 Carb that probably came on your car was that you could check the float level while the car was actually running.





Edelbrock carbs tend to be very generic. It will probably need some fine tuning for your particular application. Is it a Carter AFB clone?

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