1999 Evinrude Ficht 150 Hp fall down above 3500 Rpm?

ORCA1992

Recruit
Joined
Dec 11, 2008
Messages
1
I have a evinrude Ficht 150 Hp from 1999.
It's a fine engine but i brought it to the dealer begin this year for a service.
When it came back the enging has a problem.
The engine start fine runs fine till 3500 ? 4000 Rpm.
Than it hold just like it's get not enough fuel.
If i bring the Rpm down under 3500 Rpm it runs fine.
I already replace the whole fuel line and filters for new, no results.

What can it be ???????
Who can help me.
 

muskrat

Chief Petty Officer
Joined
Apr 13, 2004
Messages
445
Re: 1999 Evinrude Ficht 150 Hp fall down above 3500 Rpm?

Did you check the anti siphon valve .
 

seahorse5

Rear Admiral
Joined
Jan 24, 2002
Messages
4,698
Re: 1999 Evinrude Ficht 150 Hp fall down above 3500 Rpm?

Hook up a fuel pressure gauge to the fitting for the fuel rail and watch for any changes in pressure when the motor starts to lose power.

You would then have to monitor the lift pump, check for vacuum restrictions in the fuel system, or for air bubbles getting into the plumbing somewhere. The service manual explains these procedures.
 
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