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34fordy · 05-18-2026, 06:27 PM

[QUOTE=petehoovie;2451565]See > https://www.tanksinc.com/index.cfm/p...prod/prd91.htm

Only $15.95

Part # TC-32PV

TC-32PV Back side of cap. Pressure vented.

I ordered and received this nice cap today. I put my mouth on the blue (check-valve) and found that I had to lightly suck to open the vent. I am wondering if this negative pressure affects the fuel pump discharge pressure or the pumps ability to bring fuel to the pump. I would think that the pump pressure would not be affected.

05-18-2026, 06:27 PM	#19
34fordy Senior Member Join Date: Dec 2014 Location: Fort dodge, Iowa Posts: 1,464	Re: gas cap leak [QUOTE=petehoovie;2451565]See > https://www.tanksinc.com/index.cfm/p...prod/prd91.htm Only $15.95 Part # TC-32PV TC-32PV Back side of cap. Pressure vented. I ordered and received this nice cap today. I put my mouth on the blue (check-valve) and found that I had to lightly suck to open the vent. I am wondering if this negative pressure affects the fuel pump discharge pressure or the pumps ability to bring fuel to the pump. I would think that the pump pressure would not be affected.