1995 Geo Prizm presure in fule tank

1995 GEO PRIZM
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PPAYNE
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1995 Geo Prizm 4 cyl Two Wheel Drive Manual 200K miles

I have replaced my fule tank twice with new tanks and they keep getting small cracks in them. I am being told I have to much presure in the tank since I have also replaced my gas cap. I have noticed that from time to time my engine is making a different sound then normal. Can you tell me what mit be causing the extra presure in the tank that would effect my engine and how I can fix it?
Oct 30, 2008 at 1:46 PM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.
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