no fuel to Carburetor

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Hello (P30 454)
This weekend we to a trip to Ambrose Lake, Michigan
On the way home my RV started running ruff I pulled over and pulled the fuel filter out of the Carb. Then it ran like new when I pulled the fuel filter no gas came out at all and the filter looks like new when I put it in this past winter..why does it run so bad with filter in carb please help...
Ed

[DonD]

Filter's plugged. Even water can swell the paper element and fuel won't flow. The bronze one's are no better, water will stop them too.

Welcome!!!!

[legomybago]

Some say take that filter out if you have vapor lock issues...

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Thank you

[circleD]

There wont be much coming out when you take the filter out except for maybe an ounce. I've just replaced my fuel lines and thought they'd drain all at once but just the little bit in that area due to the pressure. So if you decide to check fuel lines think of it like this. When you put a straw in a drink then place your finger over the top what happens when you pull it out? Then what happens when you move your finger off of the top slowly? It comes out slowly So like our carb fuel systems you'll get a little bit at first then once air works it way up/down the lines more fuel will eventually run out. Be careful and good luck.

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 thank you

[Oz]

Thank you circleD.  I split the topic and the info you posted to go with it.