Offshoreonly.com - Mpi 454 Backfiring/skipping

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Mike L

07-24-2006 08:51 PM

Mpi 454 Backfiring/skipping

I have a 454 mpi backfiring and skipping when i rev it and backfires only on one side. The boat at steady speed doesnt seem to have the power. Before this happened it would only 4300 max with a 21P. It is a 25 outlaw. Only 53 mph max with no weight...seems slow to me. Thanks...

Ted G

07-24-2006 09:00 PM

Re: Mpi 454 Backfiring/skipping

Check fuel pressure, cap, rotor, wires, plugs-basics first. Also make sure timing is set right-8 deg BTDC in service mode.

Griff

07-24-2006 09:09 PM

Re: Mpi 454 Backfiring/skipping

That boat should run 62-64mph.

Like inspech said check the basics.

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