Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Always Read High, Failed After 4 Years

Installed this gauge on inlet line to a Quadrajet with mechanical fuel pump rated at 6 psi. Gauge read 7 to 7.5 psi from day one, and has been reading 8 to 9 psi recently. Finally pegged on 15 psi. Removed the gauge and it still read 8.5 psi at atmospheric. Installed a new industrial gauge and pressure reads 5.5 psi. Obviously bad from the start.