What would make it do this

Posted by DivideNo5814@reddit | projectcar | View on Reddit | 18 comments

I have a 1977 400 big block in a 1977 dodge power wagon and it it making this rattling noise and we took the intake off and there was a bunch of stuff on the pan under it so we cleaned it and it made it worse So we cut the gaskets off and just put the gaskets on there and not the pan and it’s still doing it What else could it be?

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Blu_yello_husky@reddit

Your choke isn't coming on. That butterfly on the top should close when you pump the gas.

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DivideNo5814@reddit (OP)

I don’t have to pump the gas

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Blu_yello_husky@reddit

You should, it's what sets the choke. Otherwise you're getting too much air and it'll start lean and stall. It's very common knowledge that you should pump the gas at least once before cold starting a carbureted engine

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DivideNo5814@reddit (OP)

Well my uncle or the guy before put electric pumps on the tanks on a switch and it starts right away

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Blu_yello_husky@reddit

You still need a choke, whether electric pump or mechanical, you still need restricted airflow when first starting the engine. Pumping the gas is more for setting the choke than it is for delivering fuel, and you didn't set the choke, I can see it in the video

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