Hey y'all. The oil warning light and buzzer on my car aren't hooked up, so the PO put in an aftermarket gauge. I changed my oil yesterday, and when I started the car up I sat and waited for the pressure to go up around 70 psi where it usually does on start-up. After about 60 secs I noticed the gauge was still reading 0 psi. I checked under the hood and there was no oil flowing through the clear plastic tube that runs from the oil filter mount to the gauge. I freaked out and stopped the car. Is this a possible oil pump failure, or is something else going on? Or is my oil pressure gauge just broken? Any help would be greatly appreciated. Thanks guys.