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    2001 150 HPDI: what causes "safe mode" (aka "limp mode")?

    One engine seems like it could be going into "safe mode" for a very short time while at normal cruise RPMs. "Very short time" = less than 1/2 second. Then it comes back to full power again, but not for long. I have done a lot of troubleshooting, that I won't get into here, because all I want to...
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    Yamaha Z150 (2-stroke) stumbles - contaminated fuel? Something else?

    Sorry in advance for the long post - I want to give as much pertinent info as possible. I haven't had this boat very long. It has Z150 (2-stroke) motors, one from 2001, the other from 2004. The last several times out, the port engine stumbles badly when I'm trying to get to cruise speed, but...
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    Power trim SUDDENLY slowed way down (1999 Johnson 35hp)

    Power trim has always gone up and down quickly. Yesterday, suddenly, in the middle of trimming up, it got real slow. Now takes at least twice as long to go all the way up or down as before. I've got 12.8V on the input side of the relays (post 30), but I can't get to the connections on the pump...
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