1989 Evinrude V6 200HP

[Majordad]

I have a problem ,motor not getting up to speed.

 

[Beaux]

Re: 1989 Evinrude V6 200HP

Sorry there MB-not much info to work with......... could you be more specific? If its max rpm speed verses boat speed then here are a few things that could help: rpm range at WOT, have you changed props (if not what did it used to run at WOT)? how long has problem been going on? have you tried trimming the boat to allow for increase ion rpm? Have you had anything worked on recently? have you had it stored for a long period of time in the past? Fresh fuel/oil used? Checked/changed fuel filter recently? last time carbs were cleaned/rebuilt, possibly compression check cylinders to give us info as to motor health? .... the more info you can give the better chances are of finding problem here. By the way- welcome to the board! Good Luck

 

[Majordad]

Re: 1989 Evinrude V6 200HP

A friend change three plugs.Got new gas.I don't think it is hitting on all cylinders.Has not been store at all. IT runs good then the motor just dies down,its only been doing this for a short while.

 

[Beaux]

Re: 1989 Evinrude V6 200HP

does the fuel bulb deflate when running? could be a fuel restriction issue from clogged/blocked fuel tank vent, bad antisiphon valave in fuel line, clogged pickup tube in tank, dirty carbs jets, etc. It runs fine at lower speeds right? but it tends to bog down after running at high rpms after a while? Are these the symptoms??? . <br />I am assuming that the plugs were changed to solve the problem (if not, if changed before this started, check type and gap to make sure they are right? Also you may want to pull plugs anyway to inspect and see if one appears different than the others (very oily/really clean/etc). this could help isolate where your problem is if its ignition trouble....also check each plugs to sure it has strong enough spark to jump to engine block with nice blue spark.