Did a volume test on my car after trying everything else.  Low volume, weak stream, relatively new pump.  Is there a way that I could be wrong on the cam or to the side? I bought, this fuel pump in 2015 reinstalled it in 2016 after rebuild.  I have tried to figure out why my car doesn't go over 55 for two years.  Now do I buy another, complement with electric, try another brand, or rebuild?