Looking for some help, I replaced the fuel pump assy. After replacing the assy it started surging after about 5 or 6 miles. At start and up to that point it worked great. I then removed the throttle body to find 4 out of 6 injectors leaking. So I replaced the CPI with a new revised MFI assy. I still have a surge just not as bad. Do you think I possibly got a bad fuel pump assy?