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Forum: Engines

04-08-2018, 09:53 PM

Replies: 11

Maxum 2400 5.0L Alpha engine loss of power

Views: 2,325

Posted By mmwjr

Baptism by fire. The 5.0 EFI is rated for 260HP...

Baptism by fire. The 5.0 EFI is rated for 260HP which should be good power for this boat. My 1997 2400 SCR came with a 5.7 rated at 260 HP and did nice with 4 people on board, beyond that she started...

Forum: Engines

08-02-2017, 12:01 AM

Replies: 11

Maxum 2400 5.0L Alpha engine loss of power

Views: 2,325

Posted By mmwjr

What I suspected, most likely a tuliped...

What I suspected, most likely a tuliped valve(burnt) from water intrusion due to leaky exhaust. Valve seat may be melted as well. Post pictures of what is found.

Look for signs of rust the the...

Forum: Engines

07-17-2017, 09:43 PM

Replies: 11

Maxum 2400 5.0L Alpha engine loss of power

Views: 2,325

Posted By mmwjr

May also be a bad ignition coil heating up and...

May also be a bad ignition coil heating up and voltage breaking down. HV probe to check voltage or a spark gap tester may show this or just spend the money to find out after ruling out the other...

Forum: Engines

07-17-2017, 03:50 PM

Replies: 11

Maxum 2400 5.0L Alpha engine loss of power

Views: 2,325

Posted By mmwjr

What year is the boat/engine? 1998 or newer will...

What year is the boat/engine? 1998 or newer will have an electric fuel pump.

Perform a compression test and fuel pressure test.

Checking rpms in neutral will tell you nothing.

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