Tex63
Well Known Member
How much pressure should build up in gas tank before cap vents? I was smelling raw fuel last week coming from my gas cap, looked old and the cork seal was gone, so replaced with new vented cap from local autozone part # 6040. No longer smell fuel from the tank area, but created a different problem, pressure built up in the tank enough to force through the lines and drip from the block to the garage floor before I noticed a few days later. I have been checking daily and opening gas cap to relieve the pressure. Could I have another bad gas cap, or weak fuel pump membrane? What to check next ?