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Found 2 results

  1. Genevatexan
    how does the fuel pressure regulator come off the fuel rail on a 1997 chevy vortec 7.4 MFI engine? We have the fuel rail out and the vacuum activated fuel pressure regulator appears to be attached directly to the fuel rail. There is not the normal clip holding it on that you would see on non-MFI engines (TBI). Its either pressed on, or somehow attached to the bracket which is attached to the rail.
  2. Tom Voyda
    00 Vortec 454 with 47,000 miles running rough in park and neutral, it's not so bad in drive, surges slightly. The only thing I changed is spark plugs and new ground strap from frame to engine, and still runs rough. Any other ideas?
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