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Posting a reply to: Re: 99 Mercury 175 EFI lost power

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hi


You are replying to:
kjgmh
Posted 8/18/2009 2:52 PM (#394723 - in reply to #393730)
Subject: Re: 99 Mercury 175 EFI lost power





Posts: 1095


Location: Hayward, WI		Fuel psi is supposed to be 36-39psi. I don't think the 1 psi difference is your problem. I think that motor has a stator with different windings for low and high speed, sounds like the high speed coils are going. This should be easy to check, just see if you are loosing spark when motor starts to miss. If not loosing spark I would then look at sticking injectors.

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