Search results

  1. B

    Compression and overheating

    I have a 1997 454 Mag MPI that is running 10-15 degrees warmer than usual. Also, compression is down approx. 20 Ibs in one cylinder. I had the valve head of the affected cylinder checked and replaced head gaskets with no change. I've already replaced sea water pump and t'stat. Any ideas?<br...
  2. B

    Scan Tool 454 Mag MPI

    Can anyone recommend a scan tool for a 1997 Merc. 454 Mag MPI? I looking for a cheapo that I can use to receive trouble codes and check ignition timing. Thanks.<br /><br />Tim
Top