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ffmedic42

500 carb question

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ok i bought a race ready car, the accelerator pump doesn't pump. changed metering blocks. pissed off the neighbors ETC... Pulled float bowl accelerator pump works fine. where is the clog???

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Take the squirter off see if both sprayers are clear plus the screw that mounts it is drilled be sure that is clear also..plus underneath that squiter should be a anti back flow thingy ma jeg if it is stuck down in the hole and wont come out that will keep it from spraying . I take it it has the correct valve body gasket between valve body and carb facial ..their are a couple of different gasket styles for those 500.s .

Edited by HiTech

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Every time that has happened to me it has been the needle-point pill under the squirter nozzle stuck in the down position. If the carb has been sitting a while, i would assume that is the culprit. Remove the squirter nozzle and look down the hole. Gently work the throttle and see if the pill tries to lift up from the pressure of the fuel. If it doesn't, it's stuck. You can usually unstick it with a very skinny screwdriver. Just jiggle it back and forth to free it up. If this is your problem, the carb may need to be disassembled and cleaned.

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Thank you for the replies. I worked over the weekend.I;m going to pull the carb and try these suggestions. If i can't get it figured out could you pm me a local carb guy in San Antonio.

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is bowl full of fuel

First thing I checked. pulled float bowl reset the float and checked when running. float is good.

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